diff --git a/Ed25519.Tests/Ed25519.Tests.csproj b/Ed25519.Tests/Ed25519.Tests.csproj
new file mode 100644
index 0000000..63a2738
--- /dev/null
+++ b/Ed25519.Tests/Ed25519.Tests.csproj
@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="NUnit" Version="3.12.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="3.16.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Ed25519\Ed25519.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/Ed25519/Tests/EdPointTests.cs b/Ed25519.Tests/EdPointTests.cs
similarity index 96%
rename from Ed25519/Tests/EdPointTests.cs
rename to Ed25519.Tests/EdPointTests.cs
index eb697e7..90363bd 100644
--- a/Ed25519/Tests/EdPointTests.cs
+++ b/Ed25519.Tests/EdPointTests.cs
@@ -1,42 +1,42 @@
-#if DEBUG
-
-using System;
-using System.Collections.Generic;
-using System.Numerics;
-using System.Text;
-using NUnit.Framework;
-
-namespace Ed25519
-{
-    internal sealed class EdPointTests
-    {
-        [Test]
-        public void TestScalMul01()
-        {
-            var point = new EdPoint
-            {
-                X = new BigInteger(1_000_000_000_000d),
-                Y = new BigInteger(1_024),
-            };
-
-            var scalar = new BigInteger(10_000);
-            var result = point.ScalarMul(scalar);
-
-            Assert.That(result.X, Is.EqualTo(BigInteger.Parse("21818314728053983532520901163316227408567979942776402561242051297393768362536")));
-            Assert.That(result.Y, Is.EqualTo(BigInteger.Parse("22622610217554165211892652042645278972766880794387244645923515142420844725944")));
-        }
-
-        [Test]
-        public void TestExpMod01()
-        {
-            var number = new BigInteger(10_000d);
-            var exponent = new BigInteger(10d);
-            var modulo = new BigInteger(105d);
-
-            var result = number.ExpMod(exponent, modulo);
-            Assert.That(result, Is.EqualTo(new BigInteger(25d)));
-        }
-    }
-}
-
+#if DEBUG
+
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+using System.Text;
+using NUnit.Framework;
+
+namespace Ed25519
+{
+    internal sealed class EdPointTests
+    {
+        [Test]
+        public void TestScalMul01()
+        {
+            var point = new EdPoint
+            {
+                X = new BigInteger(1_000_000_000_000d),
+                Y = new BigInteger(1_024),
+            };
+
+            var scalar = new BigInteger(10_000);
+            var result = point.ScalarMul(scalar);
+
+            Assert.That(result.X, Is.EqualTo(BigInteger.Parse("21818314728053983532520901163316227408567979942776402561242051297393768362536")));
+            Assert.That(result.Y, Is.EqualTo(BigInteger.Parse("22622610217554165211892652042645278972766880794387244645923515142420844725944")));
+        }
+
+        [Test]
+        public void TestExpMod01()
+        {
+            var number = new BigInteger(10_000d);
+            var exponent = new BigInteger(10d);
+            var modulo = new BigInteger(105d);
+
+            var result = number.ExpMod(exponent, modulo);
+            Assert.That(result, Is.EqualTo(new BigInteger(25d)));
+        }
+    }
+}
+
 #endif
\ No newline at end of file
diff --git a/Ed25519/Tests/SignerTests.cs b/Ed25519.Tests/SignerTests.cs
similarity index 98%
rename from Ed25519/Tests/SignerTests.cs
rename to Ed25519.Tests/SignerTests.cs
index ea36897..14ddb00 100644
--- a/Ed25519/Tests/SignerTests.cs
+++ b/Ed25519.Tests/SignerTests.cs
@@ -1,914 +1,914 @@
-#if DEBUG
-
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.IO;
-using System.Security.Cryptography;
-using System.Text;
-using System.Threading.Tasks;
-using NUnit.Framework;
-
-namespace Ed25519
-{
-    internal sealed class SignerTests
-    {
-        [Test]
-        public void TestSignatureLength()
-        {
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var signature = Signer.Sign(message, privateKey, publicKey);
-
-            Assert.That(signature.Length, Is.EqualTo(64));
-        }
-
-        [Test]
-        public async Task TestSignatureLengthAsync()
-        {
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            var signature = await Signer.SignAsync(message, privateKey, publicKey);
-
-            Assert.That(signature.Length, Is.EqualTo(64));
-        }
-
-        [Test]
-        public void TestManipulatedPublicKey()
-        {
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey()[2..];
-
-            try
-            {
-                Signer.Sign(message, privateKey, publicKey);
-                Assert.Fail("Should not be reached!");
-            }
-            catch (ArgumentException e)
-            {
-                Assert.That(true); // Public key is too short!
-            }
-        }
-
-        [Test]
-        public async Task TestManipulatedPublicKeyAsync()
-        {
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = (await privateKey.ExtractPublicKeyAsync())[2..];
-
-            try
-            {
-                await Signer.SignAsync(message, privateKey, publicKey);
-                Assert.Fail("Should not be reached!");
-            }
-            catch (ArgumentException e)
-            {
-                Assert.That(true); // Public key is too short!
-            }
-        }
-
-        [Test]
-        public void TestSimpleMessageValidation()
-        {
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var signature = Signer.Sign(message, privateKey, publicKey);
-            var validationResult = Signer.Validate(signature, message, publicKey);
-
-            Assert.That(validationResult, Is.True);
-        }
-
-        [Test]
-        public async Task TestSimpleMessageValidationAsync()
-        {
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            var signature = await Signer.SignAsync(message, privateKey, publicKey);
-            var validationResult = await Signer.ValidateAsync(signature, message, publicKey);
-
-            Assert.That(validationResult, Is.True);
-        }
-
-        [Test]
-        public void TestSlightlyChangedMessageValidation()
-        {
-            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var signature = Signer.Sign(messageOriginal, privateKey, publicKey);
-
-            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
-            var validationResult = Signer.Validate(signature, messageAltered, publicKey);
-
-            Assert.That(validationResult, Is.False); // Message was altered!
-        }
-
-        [Test]
-        public async Task TestSlightlyChangedMessageValidationAsync()
-        {
-            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            var signature = await Signer.SignAsync(messageOriginal, privateKey, publicKey);
-
-            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
-            var validationResult = await Signer.ValidateAsync(signature, messageAltered, publicKey);
-
-            Assert.That(validationResult, Is.False); // Message was altered!
-        }
-
-        [Test]
-        public void TestSlightlyChangedMessageDifferentSignatures()
-        {
-            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
-
-            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
-            var signatureAltered = Signer.Sign(messageAltered, privateKey, publicKey);
-
-            // Two different messages must produce different signatures!
-            Assert.That(signatureOriginal.ToArray(), Is.Not.EqualTo(signatureAltered.ToArray()));
-        }
-
-        [Test]
-        public async Task TestSlightlyChangedMessageDifferentSignaturesAsync()
-        {
-            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            var signatureOriginal = await Signer.SignAsync(messageOriginal, privateKey, publicKey);
-
-            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
-            var signatureAltered = await Signer.SignAsync(messageAltered, privateKey, publicKey);
-
-            // Two different messages must produce different signatures!
-            Assert.That(signatureOriginal, Is.Not.EqualTo(signatureAltered));
-        }
-
-        [Test]
-        public void TestMessageValidationWithDifferentEncodings()
-        {
-            var messageOriginal = Encoding.ASCII.GetBytes("This is a test message.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
-
-            var messageAltered = Encoding.UTF32.GetBytes("This is a test message.");
-            var signatureAltered = Signer.Sign(messageAltered, privateKey, publicKey);
-
-            // Two equal messages with different encoding must produce different signatures:
-            Assert.That(signatureOriginal.ToArray(), Is.Not.EqualTo(signatureAltered.ToArray()));
-        }
-
-        [Test]
-        public async Task TestMessageValidationWithDifferentEncodingsAsync()
-        {
-            var messageOriginal = Encoding.ASCII.GetBytes("This is a test message.");
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            var signatureOriginal = await Signer.SignAsync(messageOriginal, privateKey, publicKey);
-
-            var messageAltered = Encoding.UTF32.GetBytes("This is a test message.");
-            var signatureAltered = await Signer.SignAsync(messageAltered, privateKey, publicKey);
-
-            // Two equal messages with different encoding must produce different signatures:
-            Assert.That(signatureOriginal, Is.Not.EqualTo(signatureAltered));
-        }
-
-        [Test]
-        public void TestMessageWithUmlautsAndDifferentEncodings()
-        {
-            var messageOriginal = Encoding.ASCII.GetBytes("This is a test message with umlauts äöü.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
-
-            var messageAltered = Encoding.UTF8.GetBytes("This is a test message with umlauts äöü.");
-            var signatureAltered = Signer.Sign(messageAltered, privateKey, publicKey);
-
-            // Two equal messages with different encoding must produce different signatures:
-            Assert.That(signatureOriginal.ToArray(), Is.Not.EqualTo(signatureAltered.ToArray()));
-        }
-
-        [Test]
-        public void TestMessageWithUmlauts()
-        {
-            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message with umlauts äöü.");
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
-
-            var message2 = Encoding.UTF8.GetBytes("This is a test message with umlauts äöü.");
-            var signature2 = Signer.Sign(message2, privateKey, publicKey);
-            var validationResult = Signer.Validate(signatureOriginal, message2, publicKey);
-
-            // Two equal messages must produce same signatures:
-            Assert.That(signatureOriginal.ToArray(), Is.EqualTo(signature2.ToArray()));
-            Assert.That(validationResult, Is.True);
-        }
-
-        [Test]
-        public void TestKeyGeneratorWithoutPassword()
-        {
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-
-            Assert.That(privateKey.Length, Is.EqualTo(32));
-            Assert.That(publicKey.Length, Is.EqualTo(32));
-            Assert.That(privateKey.ToArray(), Is.Not.EqualTo(publicKey.ToArray()));
-        }
-
-        [Test]
-        public async Task TestKeyGeneratorWithoutPasswordAsync()
-        {
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-
-            Assert.That(privateKey.Length, Is.EqualTo(32));
-            Assert.That(publicKey.Length, Is.EqualTo(32));
-            Assert.That(privateKey, Is.Not.EqualTo(publicKey));
-        }
-
-        [Test]
-        public void TestKeyGeneratorWithPassword()
-        {
-            var password = "test password";
-            var privateKeyEncrypted = Signer.GeneratePrivateKey(password);
-            var privateKeyDecrypted = privateKeyEncrypted.DecryptPrivateKey(password);
-            var publicKey = privateKeyDecrypted.ExtractPublicKey();
-
-            Assert.That(privateKeyEncrypted.Length, Is.GreaterThan(32));
-            Assert.That(privateKeyDecrypted.Length, Is.EqualTo(32));
-            Assert.That(publicKey.Length, Is.EqualTo(32));
-            Assert.That(privateKeyEncrypted.ToArray(), Is.Not.EqualTo(privateKeyDecrypted.ToArray()));
-            Assert.That(privateKeyEncrypted.ToArray(), Is.Not.EqualTo(publicKey.ToArray()));
-            Assert.That(privateKeyDecrypted.ToArray(), Is.Not.EqualTo(publicKey.ToArray()));
-        }
-
-        [Test]
-        public async Task TestKeyGeneratorWithPasswordAsync()
-        {
-            var password = "test password";
-            var privateKeyEncrypted = await Signer.GeneratePrivateKeyAsync(password);
-            var privateKeyDecrypted = await privateKeyEncrypted.DecryptPrivateKeyAsync(password);
-            var publicKey = await privateKeyDecrypted.ExtractPublicKeyAsync();
-
-            Assert.That(privateKeyEncrypted.Length, Is.GreaterThan(32));
-            Assert.That(privateKeyDecrypted.Length, Is.EqualTo(32));
-            Assert.That(publicKey.Length, Is.EqualTo(32));
-            Assert.That(privateKeyEncrypted, Is.Not.EqualTo(privateKeyDecrypted));
-            Assert.That(privateKeyEncrypted, Is.Not.EqualTo(publicKey));
-            Assert.That(privateKeyDecrypted, Is.Not.EqualTo(publicKey));
-        }
-
-        [Test]
-        public void TestMultipleKeysWithoutPassword()
-        {
-            var privateKey1 = Signer.GeneratePrivateKey();
-            var privateKey2 = Signer.GeneratePrivateKey();
-            var privateKey3 = Signer.GeneratePrivateKey();
-
-            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey2.ToArray()));
-            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
-            Assert.That(privateKey2.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
-        }
-
-        [Test]
-        public async Task TestMultipleKeysWithoutPasswordAsync()
-        {
-            var privateKey1 = await Signer.GeneratePrivateKeyAsync();
-            var privateKey2 = await Signer.GeneratePrivateKeyAsync();
-            var privateKey3 = await Signer.GeneratePrivateKeyAsync();
-
-            Assert.That(privateKey1, Is.Not.EqualTo(privateKey2));
-            Assert.That(privateKey1, Is.Not.EqualTo(privateKey3));
-            Assert.That(privateKey2, Is.Not.EqualTo(privateKey3));
-        }
-
-        [Test]
-        public void TestMultipleKeysWithPassword()
-        {
-            var password = "test password";
-            var privateKey1 = Signer.GeneratePrivateKey(password);
-            var privateKey2 = Signer.GeneratePrivateKey(password);
-            var privateKey3 = Signer.GeneratePrivateKey(password);
-
-            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey2.ToArray()));
-            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
-            Assert.That(privateKey2.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
-        }
-
-        [Test]
-        public async Task TestMultipleKeysWithPasswordAsync()
-        {
-            var password = "test password";
-            var privateKey1 = await Signer.GeneratePrivateKeyAsync(password);
-            var privateKey2 = await Signer.GeneratePrivateKeyAsync(password);
-            var privateKey3 = await Signer.GeneratePrivateKeyAsync(password);
-
-            Assert.That(privateKey1, Is.Not.EqualTo(privateKey2));
-            Assert.That(privateKey1, Is.Not.EqualTo(privateKey3));
-            Assert.That(privateKey2, Is.Not.EqualTo(privateKey3));
-        }
-
-        [Test]
-        public void TestPublicKeyFromRandomData()
-        {
-            var privateKey = new byte[] {0x00, 0xac, 0x48}.AsSpan();
-            var publicKey = privateKey.ExtractPublicKey();
-
-            Assert.That(privateKey.Length, Is.EqualTo(3));
-            Assert.That(publicKey.Length, Is.EqualTo(0));
-            Assert.That(publicKey.IsEmpty, Is.True);
-        }
-
-        [Test]
-        public async Task TestPublicKeyFromRandomDataAsync()
-        {
-            var privateKey = new byte[] { 0x00, 0xac, 0x48 };
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-
-            Assert.That(privateKey.Length, Is.EqualTo(3));
-            Assert.That(publicKey, Is.Null);
-        }
-
-        [Test]
-        public void TestWritingAndLoadingKeys()
-        {
-            var tempFilePrivate = Path.GetTempFileName();
-            var tempFilePublic = Path.GetTempFileName();
-
-            try
-            {
-                var privateKey = Signer.GeneratePrivateKey();
-                var publicKey = privateKey.ExtractPublicKey();
-
-                privateKey.WriteKey(tempFilePrivate);
-                publicKey.WriteKey(tempFilePublic);
-
-                var reloadPrivateKey = Signer.LoadKey(tempFilePrivate);
-                var reloadPublicKey = Signer.LoadKey(tempFilePublic);
-
-                Assert.That(reloadPublicKey.Length, Is.EqualTo(32));
-                Assert.That(reloadPrivateKey.Length, Is.EqualTo(32));
-
-                Assert.That(reloadPublicKey.ToArray(), Is.EqualTo(publicKey.ToArray()));
-                Assert.That(reloadPrivateKey.ToArray(), Is.EqualTo(privateKey.ToArray()));
-            }
-            finally
-            {
-                File.Delete(tempFilePublic);
-                File.Delete(tempFilePrivate);
-            }
-        }
-
-        [Test]
-        public async Task TestWritingAndLoadingKeysAsync()
-        {
-            var tempFilePrivate = Path.GetTempFileName();
-            var tempFilePublic = Path.GetTempFileName();
-
-            try
-            {
-                var privateKey = await Signer.GeneratePrivateKeyAsync();
-                var publicKey = await privateKey.ExtractPublicKeyAsync();
-
-                await privateKey.WriteKeyAsync(tempFilePrivate);
-                await publicKey.WriteKeyAsync(tempFilePublic);
-
-                var reloadPrivateKey = await Signer.LoadKeyAsync(tempFilePrivate);
-                var reloadPublicKey = await Signer.LoadKeyAsync(tempFilePublic);
-
-                Assert.That(reloadPublicKey.Length, Is.EqualTo(32));
-                Assert.That(reloadPrivateKey.Length, Is.EqualTo(32));
-
-                Assert.That(reloadPublicKey, Is.EqualTo(publicKey));
-                Assert.That(reloadPrivateKey, Is.EqualTo(privateKey));
-            }
-            finally
-            {
-                File.Delete(tempFilePublic);
-                File.Delete(tempFilePrivate);
-            }
-        }
-
-        [Test]
-        public void TestExtractPublicKeyFromEncryptedPrivateKey()
-        {
-            var privateKeyEncrypted = Signer.GeneratePrivateKey("secret password");
-            var privateKeyDecrypted = privateKeyEncrypted.DecryptPrivateKey("secret password");
-            var publicKeyFromDecrypted = privateKeyDecrypted.ExtractPublicKey();
-            var publicKeyFromEncrypted = privateKeyEncrypted.ExtractPublicKey();
-
-            Assert.That(publicKeyFromDecrypted.ToArray(), Is.Not.EqualTo(publicKeyFromEncrypted.ToArray()));
-        }
-
-        [Test]
-        public async Task TestExtractPublicKeyFromEncryptedPrivateKeyAsync()
-        {
-            var privateKeyEncrypted = await Signer.GeneratePrivateKeyAsync("secret password");
-            var privateKeyDecrypted = await privateKeyEncrypted.DecryptPrivateKeyAsync("secret password");
-            var publicKeyFromDecrypted = await privateKeyDecrypted.ExtractPublicKeyAsync();
-            var publicKeyFromEncrypted = await privateKeyEncrypted.ExtractPublicKeyAsync();
-
-            Assert.That(publicKeyFromDecrypted, Is.Not.EqualTo(publicKeyFromEncrypted));
-        }
-
-        [Test]
-        public void TestExtractPublicKeyFromTooShortPrivateKey()
-        {
-            var privateKey= Signer.GeneratePrivateKey()[..6]; // Six first bytes from private key!
-            var publicKey = privateKey.ExtractPublicKey();
-            Assert.That(publicKey == ReadOnlySpan<byte>.Empty, Is.True);
-        }
-
-        [Test]
-        public async Task TestExtractPublicKeyFromTooShortPrivateKeyAsync()
-        {
-            var privateKey = (await Signer.GeneratePrivateKeyAsync())[..6]; // Six first bytes from private key!
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            Assert.That(publicKey, Is.Null);
-        }
-
-        [Test]
-        public void TestSigningBehaviourPrivateKeyWithPassword()
-        {
-            var privateKeyEncrypted = Signer.GeneratePrivateKey("secret password");
-            var privateKeyDecrypted = privateKeyEncrypted.DecryptPrivateKey("secret password");
-            var publicKey = privateKeyDecrypted.ExtractPublicKey();
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var signaturePrivateKeyDecrypted = Signer.Sign(message, privateKeyDecrypted, publicKey);
-            var signaturePrivateKeyEncrypted = Signer.Sign(message, privateKeyEncrypted[..32], publicKey); // Note: The encrypted private key is 64 bytes long!
-            var validationDecrypted = Signer.Validate(signaturePrivateKeyDecrypted, message, publicKey);
-            var validationEncrypted = Signer.Validate(signaturePrivateKeyEncrypted, message, publicKey);
-
-            Assert.That(validationDecrypted, Is.True); // This is the intended behaviour. The public key was derived from the decrypted private key.
-            Assert.That(validationEncrypted, Is.False); // This should fail, because the public key does not match the *encrypted* private key!
-            Assert.That(signaturePrivateKeyEncrypted.ToArray(), Is.Not.EqualTo(signaturePrivateKeyDecrypted.ToArray()));
-        }
-
-        [Test]
-        public async Task TestSigningBehaviourPrivateKeyWithPasswordAsync()
-        {
-            var privateKeyEncrypted = await Signer.GeneratePrivateKeyAsync("secret password");
-            var privateKeyDecrypted = await privateKeyEncrypted.DecryptPrivateKeyAsync("secret password");
-            var publicKey = await privateKeyDecrypted.ExtractPublicKeyAsync();
-            var message = Encoding.UTF8.GetBytes("This is a test message.");
-            var signaturePrivateKeyDecrypted = await Signer.SignAsync(message, privateKeyDecrypted, publicKey);
-            var signaturePrivateKeyEncrypted = await Signer.SignAsync(message, privateKeyEncrypted[..32], publicKey); // Note: The encrypted private key is 64 bytes long!
-            var validationDecrypted = await Signer.ValidateAsync(signaturePrivateKeyDecrypted, message, publicKey);
-            var validationEncrypted = await Signer.ValidateAsync(signaturePrivateKeyEncrypted, message, publicKey);
-
-            Assert.That(validationDecrypted, Is.True); // This is the intended behaviour. The public key was derived from the decrypted private key.
-            Assert.That(validationEncrypted, Is.False); // This should fail, because the public key does not match the *encrypted* private key!
-            Assert.That(signaturePrivateKeyEncrypted, Is.Not.EqualTo(signaturePrivateKeyDecrypted));
-        }
-
-        [Test]
-        public void TestPerformanceSigning()
-        {
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var rng = new Random();
-            var payload = new byte[1_024];
-            var stopwatch = new Stopwatch();
-            var desiredRuntime = TimeSpan.FromSeconds(30);
-            var counter = 0;
-
-            while (true)
-            {
-                counter++;
-                rng.NextBytes(payload);
-                
-                stopwatch.Start();
-                Signer.Sign(payload, privateKey, publicKey);
-                stopwatch.Stop();
-
-                if(stopwatch.Elapsed >= desiredRuntime)
-                    break;
-            }
-
-            var result = counter / stopwatch.Elapsed.TotalSeconds;
-            TestContext.Write($"Benchmark for signing messages: {result:0.00} messages/second");
-            Assert.That(true);
-        }
-
-        [Test]
-        public async Task TestPerformanceSigningAsync()
-        {
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            var rng = new Random();
-            var payload = new byte[1_024];
-            var stopwatch = new Stopwatch();
-            var desiredRuntime = TimeSpan.FromSeconds(30);
-            var counter = 0;
-
-            while (true)
-            {
-                counter++;
-                rng.NextBytes(payload);
-
-                stopwatch.Start();
-                await Signer.SignAsync(payload, privateKey, publicKey);
-                stopwatch.Stop();
-
-                if (stopwatch.Elapsed >= desiredRuntime)
-                    break;
-            }
-
-            var result = counter / stopwatch.Elapsed.TotalSeconds;
-            TestContext.Write($"Benchmark for signing messages: {result:0.00} messages/second");
-            Assert.That(true);
-        }
-
-        [Test]
-        public void TestPerformanceValidation()
-        {
-            var privateKey = Signer.GeneratePrivateKey();
-            var publicKey = privateKey.ExtractPublicKey();
-            var rng = new Random();
-            var payload = new byte[1_024];
-            var stopwatch = new Stopwatch();
-            var desiredRuntime = TimeSpan.FromSeconds(30);
-            var counter = 0;
-
-            while (true)
-            {
-                counter++;
-                rng.NextBytes(payload);
-
-                var signature = Signer.Sign(payload, privateKey, publicKey);
-                
-                stopwatch.Start();
-                Signer.Validate(signature, payload, publicKey);
-                stopwatch.Stop();
-
-                if (stopwatch.Elapsed >= desiredRuntime)
-                    break;
-            }
-
-            var result = counter / stopwatch.Elapsed.TotalSeconds;
-            TestContext.Write($"Benchmark for validation of messages: {result:0.00} messages/second");
-            Assert.That(true);
-        }
-
-        [Test]
-        public async Task TestPerformanceValidationAsync()
-        {
-            var privateKey = await Signer.GeneratePrivateKeyAsync();
-            var publicKey = await privateKey.ExtractPublicKeyAsync();
-            var rng = new Random();
-            var payload = new byte[1_024];
-            var stopwatch = new Stopwatch();
-            var desiredRuntime = TimeSpan.FromSeconds(30);
-            var counter = 0;
-
-            while (true)
-            {
-                counter++;
-                rng.NextBytes(payload);
-
-                var signature = await Signer.SignAsync(payload, privateKey, publicKey);
-
-                stopwatch.Start();
-                await Signer.ValidateAsync(signature, payload, publicKey);
-                stopwatch.Stop();
-
-                if (stopwatch.Elapsed >= desiredRuntime)
-                    break;
-            }
-
-            var result = counter / stopwatch.Elapsed.TotalSeconds;
-            TestContext.Write($"Benchmark for validation of messages: {result:0.00} messages/second");
-            Assert.That(true);
-        }
-
-        [Test]
-        public void TestLoadingNotExistingKey()
-        {
-            var key = Signer.LoadKey(Guid.NewGuid().ToString());
-            Assert.That(key == ReadOnlySpan<byte>.Empty, Is.True);
-        }
-
-        [Test]
-        public async Task TestLoadingNotExistingKeyAsync()
-        {
-            var key = await Signer.LoadKeyAsync(Guid.NewGuid().ToString());
-            Assert.That(key, Is.Null);
-        }
-
-        // See https://tools.ietf.org/html/rfc8032#section-7.1
-        [Test]
-        public void TestRFC8032Test01EmptyMessage()
-        {
-            var message = new ReadOnlySpan<byte>(); // Empty message!
-            var publicKey = new byte[]
-            {
-                0xd7, 0x5a, 0x98, 0x01, 0x82, 0xb1, 0x0a, 0xb7, 0xd5, 0x4b, 0xfe, 0xd3, 0xc9, 0x64, 0x07, 0x3a,
-                0x0e, 0xe1, 0x72, 0xf3, 0xda, 0xa6, 0x23, 0x25, 0xaf, 0x02, 0x1a, 0x68, 0xf7, 0x07, 0x51, 0x1a,
-            };
-
-            var privateKey = new byte[]
-            {
-                0x9d, 0x61, 0xb1, 0x9d, 0xef, 0xfd, 0x5a, 0x60, 0xba, 0x84, 0x4a, 0xf4, 0x92, 0xec, 0x2c, 0xc4,
-                0x44, 0x49, 0xc5, 0x69, 0x7b, 0x32, 0x69, 0x19, 0x70, 0x3b, 0xac, 0x03, 0x1c, 0xae, 0x7f, 0x60,
-            };
-
-            var expectedSignature = new byte[]
-            {
-                0xe5, 0x56, 0x43, 0x00, 0xc3, 0x60, 0xac, 0x72, 0x90, 0x86, 0xe2, 0xcc, 0x80, 0x6e, 0x82, 0x8a,
-                0x84, 0x87, 0x7f, 0x1e, 0xb8, 0xe5, 0xd9, 0x74, 0xd8, 0x73, 0xe0, 0x65, 0x22, 0x49, 0x01, 0x55,
-                0x5f, 0xb8, 0x82, 0x15, 0x90, 0xa3, 0x3b, 0xac, 0xc6, 0x1e, 0x39, 0x70, 0x1c, 0xf9, 0xb4, 0x6b,
-                0xd2, 0x5b, 0xf5, 0xf0, 0x59, 0x5b, 0xbe, 0x24, 0x65, 0x51, 0x41, 0x43, 0x8e, 0x7a, 0x10, 0x0b,
-            };
-
-            var signature = Signer.Sign(message, privateKey, publicKey);
-            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
-
-            var validationResult = Signer.Validate(signature, message, publicKey);
-            Assert.That(validationResult, Is.True);
-        }
-
-        // See https://tools.ietf.org/html/rfc8032#section-7.1
-        [Test]
-        public void TestRFC8032Test02OneByteMessage()
-        {
-            var message = new byte[]
-            {
-                0x72,
-            };
-
-            var publicKey = new byte[]
-            {
-                0x3d, 0x40, 0x17, 0xc3, 0xe8, 0x43, 0x89, 0x5a, 0x92, 0xb7, 0x0a, 0xa7, 0x4d, 0x1b, 0x7e, 0xbc,
-                0x9c, 0x98, 0x2c, 0xcf, 0x2e, 0xc4, 0x96, 0x8c, 0xc0, 0xcd, 0x55, 0xf1, 0x2a, 0xf4, 0x66, 0x0c,
-            };
-
-            var privateKey = new byte[]
-            {
-                0x4c, 0xcd, 0x08, 0x9b, 0x28, 0xff, 0x96, 0xda, 0x9d, 0xb6, 0xc3, 0x46, 0xec, 0x11, 0x4e, 0x0f,
-                0x5b, 0x8a, 0x31, 0x9f, 0x35, 0xab, 0xa6, 0x24, 0xda, 0x8c, 0xf6, 0xed, 0x4f, 0xb8, 0xa6, 0xfb,
-            };
-
-            var expectedSignature = new byte[]
-            {
-                0x92, 0xa0, 0x09, 0xa9, 0xf0, 0xd4, 0xca, 0xb8, 0x72, 0x0e, 0x82, 0x0b, 0x5f, 0x64, 0x25, 0x40,
-                0xa2, 0xb2, 0x7b, 0x54, 0x16, 0x50, 0x3f, 0x8f, 0xb3, 0x76, 0x22, 0x23, 0xeb, 0xdb, 0x69, 0xda,
-                0x08, 0x5a, 0xc1, 0xe4, 0x3e, 0x15, 0x99, 0x6e, 0x45, 0x8f, 0x36, 0x13, 0xd0, 0xf1, 0x1d, 0x8c,
-                0x38, 0x7b, 0x2e, 0xae, 0xb4, 0x30, 0x2a, 0xee, 0xb0, 0x0d, 0x29, 0x16, 0x12, 0xbb, 0x0c, 0x00,
-            };
-
-            var signature = Signer.Sign(message, privateKey, publicKey);
-            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
-
-            var validationResult = Signer.Validate(signature, message, publicKey);
-            Assert.That(validationResult, Is.True);
-        }
-
-        // See https://tools.ietf.org/html/rfc8032#section-7.1
-        [Test]
-        public void TestRFC8032Test03TwoByteMessage()
-        {
-            var message = new byte[]
-            {
-                0xaf, 0x82,
-            };
-
-            var publicKey = new byte[]
-            {
-                0xfc, 0x51, 0xcd, 0x8e, 0x62, 0x18, 0xa1, 0xa3, 0x8d, 0xa4, 0x7e, 0xd0, 0x02, 0x30, 0xf0, 0x58,
-                0x08, 0x16, 0xed, 0x13, 0xba, 0x33, 0x03, 0xac, 0x5d, 0xeb, 0x91, 0x15, 0x48, 0x90, 0x80, 0x25,
-
-            };
-
-            var privateKey = new byte[]
-            {
-                0xc5, 0xaa, 0x8d, 0xf4, 0x3f, 0x9f, 0x83, 0x7b, 0xed, 0xb7, 0x44, 0x2f, 0x31, 0xdc, 0xb7, 0xb1,
-                0x66, 0xd3, 0x85, 0x35, 0x07, 0x6f, 0x09, 0x4b, 0x85, 0xce, 0x3a, 0x2e, 0x0b, 0x44, 0x58, 0xf7,
-            };
-
-            var expectedSignature = new byte[]
-            {
-                0x62, 0x91, 0xd6, 0x57, 0xde, 0xec, 0x24, 0x02, 0x48, 0x27, 0xe6, 0x9c, 0x3a, 0xbe, 0x01, 0xa3,
-                0x0c, 0xe5, 0x48, 0xa2, 0x84, 0x74, 0x3a, 0x44, 0x5e, 0x36, 0x80, 0xd7, 0xdb, 0x5a, 0xc3, 0xac,
-                0x18, 0xff, 0x9b, 0x53, 0x8d, 0x16, 0xf2, 0x90, 0xae, 0x67, 0xf7, 0x60, 0x98, 0x4d, 0xc6, 0x59,
-                0x4a, 0x7c, 0x15, 0xe9, 0x71, 0x6e, 0xd2, 0x8d, 0xc0, 0x27, 0xbe, 0xce, 0xea, 0x1e, 0xc4, 0x0a,
-            };
-
-            var signature = Signer.Sign(message, privateKey, publicKey);
-            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
-
-            var validationResult = Signer.Validate(signature, message, publicKey);
-            Assert.That(validationResult, Is.True);
-        }
-
-        // See https://tools.ietf.org/html/rfc8032#section-7.1
-        [Test]
-        public void TestRFC8032Test04With1kMessage()
-        {
-            var message = new byte[]
-            {
-                0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43, 0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5, 0x49, 0x08,
-                0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91, 0xea, 0xbd, 0x33, 0x45, 0xe3, 0xe4, 0xeb, 0x98,
-                0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12, 0xee, 0x50, 0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1,
-                0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f, 0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8,
-                0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc, 0x49, 0x96, 0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57,
-                0x38, 0x82, 0x9a, 0xdb, 0x26, 0xc8, 0x1b, 0x37, 0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d,
-                0x65, 0x86, 0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0, 0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c,
-                0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b, 0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89, 0xff, 0xbc,
-                0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3, 0xa5, 0xe1, 0x99, 0x8b, 0xd1, 0x77, 0xe9, 0x3a,
-                0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e, 0xe5, 0xd0, 0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe,
-                0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82, 0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b,
-                0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40, 0x1a, 0xa6, 0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e,
-                0x06, 0x20, 0x3b, 0x33, 0x89, 0x0c, 0xc9, 0xb8, 0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9,
-                0xa3, 0x9c, 0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28, 0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef,
-                0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68, 0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b, 0xbc, 0x10,
-                0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1, 0x23, 0x1d, 0x20, 0x6b, 0xe6, 0xcd, 0x9e, 0xc7,
-                0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04, 0xed, 0x34, 0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4,
-                0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53, 0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1,
-                0x85, 0xce, 0x81, 0xbd, 0x84, 0x35, 0x9d, 0x44, 0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9,
-                0x4a, 0x7c, 0x19, 0x58, 0xd1, 0xf8, 0xad, 0xa5, 0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2,
-                0xd1, 0x7b, 0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59, 0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d,
-                0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce, 0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40, 0xcc, 0x24,
-                0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6, 0x07, 0x9c, 0xad, 0x88, 0x42, 0x5d, 0xe6, 0xbd,
-                0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf, 0x67, 0xbf, 0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70,
-                0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59, 0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53,
-                0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa, 0xd8, 0x78, 0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc,
-                0x27, 0x32, 0xe6, 0x94, 0x85, 0xbb, 0xc9, 0xc9, 0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b,
-                0xec, 0xcf, 0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2, 0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07,
-                0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75, 0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5, 0x55, 0x5a,
-                0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d, 0x08, 0x59, 0xdc, 0x65, 0xa4, 0x61, 0x28, 0xba,
-                0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31, 0x8c, 0x78, 0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b,
-                0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22, 0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a,
-                0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a, 0xe0, 0x78, 0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b,
-                0xe3, 0xea, 0x70, 0x82, 0xff, 0x7f, 0xc9, 0x88, 0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e,
-                0xc9, 0x60, 0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9, 0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8,
-                0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4, 0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a, 0xcd, 0xb7,
-                0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55, 0xad, 0xe8, 0x29, 0x72, 0x97, 0xd0, 0x7a, 0xd1,
-                0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01, 0x65, 0x13, 0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c,
-                0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb, 0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d,
-                0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c, 0x4b, 0x4c, 0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8,
-                0xca, 0x61, 0x78, 0x3a, 0xac, 0xec, 0x57, 0xfb, 0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8,
-                0x5f, 0x67, 0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14, 0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf,
-                0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9, 0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b, 0x29, 0x27,
-                0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b, 0x68, 0x40, 0x1a, 0xde, 0xbf, 0x5a, 0x7e, 0x08,
-                0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a, 0x65, 0x04, 0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7,
-                0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67, 0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49,
-                0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf, 0x19, 0x1f, 0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57,
-                0xf7, 0xf7, 0x27, 0x6c, 0xd4, 0x19, 0xc1, 0x7a, 0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4,
-                0x88, 0xac, 0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5, 0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1,
-                0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d, 0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56, 0x00, 0xa3,
-                0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e, 0x30, 0x8a, 0xa3, 0x42, 0x72, 0x1a, 0xac, 0x09,
-                0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79, 0x37, 0x65, 0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e,
-                0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4, 0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2,
-                0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f, 0x25, 0x66, 0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f,
-                0xb9, 0x32, 0x46, 0xf6, 0xb1, 0x11, 0x63, 0x98, 0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41,
-                0xe9, 0x89, 0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c, 0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5,
-                0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3, 0x07, 0xba, 0x53, 0x71, 0x52, 0xf3, 0xf1, 0x61,
-                0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9, 0x0d, 0x11, 0xfa, 0xa9, 0x33, 0xa1, 0x5e, 0xf1,
-                0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45, 0xa9, 0x67, 0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34,
-                0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd, 0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d,
-                0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c, 0x41, 0x85, 0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e,
-                0x4d, 0xc1, 0xff, 0xc8, 0x72, 0xee, 0xee, 0x47, 0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c,
-                0x06, 0x18, 0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef, 0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca,
-                0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08, 0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9, 0xd0,
-            };
-
-            var publicKey = new byte[]
-            {
-                0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34, 0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e, 0x83, 0x86,
-                0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5, 0x1f, 0xef, 0x7c, 0x59, 0x7f, 0x1d, 0x42, 0x6e,
-            };
-
-            var privateKey = new byte[]
-            {
-                0xf5, 0xe5, 0x76, 0x7c, 0xf1, 0x53, 0x31, 0x95, 0x17, 0x63, 0x0f, 0x22, 0x68, 0x76, 0xb8, 0x6c,
-                0x81, 0x60, 0xcc, 0x58, 0x3b, 0xc0, 0x13, 0x74, 0x4c, 0x6b, 0xf2, 0x55, 0xf5, 0xcc, 0x0e, 0xe5,
-            };
-
-            var expectedSignature = new byte[]
-            {
-                0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2, 0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32, 0x6a, 0x3a,
-                0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb, 0x67, 0xcb, 0xf6, 0xe4, 0x60, 0xfe, 0xc3, 0x50,
-                0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45, 0x28, 0xec, 0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b,
-                0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6, 0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03,
-            };
-
-            var signature = Signer.Sign(message, privateKey, publicKey);
-            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
-
-            var validationResult = Signer.Validate(signature, message, publicKey);
-            Assert.That(validationResult, Is.True);
-        }
-
-        // See https://tools.ietf.org/html/rfc8032#section-7.1
-        [Test]
-        public async Task TestRFC8032Test04With1kMessageAsync()
-        {
-            var message = new byte[]
-            {
-                0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43, 0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5, 0x49, 0x08,
-                0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91, 0xea, 0xbd, 0x33, 0x45, 0xe3, 0xe4, 0xeb, 0x98,
-                0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12, 0xee, 0x50, 0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1,
-                0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f, 0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8,
-                0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc, 0x49, 0x96, 0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57,
-                0x38, 0x82, 0x9a, 0xdb, 0x26, 0xc8, 0x1b, 0x37, 0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d,
-                0x65, 0x86, 0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0, 0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c,
-                0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b, 0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89, 0xff, 0xbc,
-                0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3, 0xa5, 0xe1, 0x99, 0x8b, 0xd1, 0x77, 0xe9, 0x3a,
-                0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e, 0xe5, 0xd0, 0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe,
-                0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82, 0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b,
-                0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40, 0x1a, 0xa6, 0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e,
-                0x06, 0x20, 0x3b, 0x33, 0x89, 0x0c, 0xc9, 0xb8, 0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9,
-                0xa3, 0x9c, 0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28, 0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef,
-                0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68, 0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b, 0xbc, 0x10,
-                0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1, 0x23, 0x1d, 0x20, 0x6b, 0xe6, 0xcd, 0x9e, 0xc7,
-                0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04, 0xed, 0x34, 0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4,
-                0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53, 0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1,
-                0x85, 0xce, 0x81, 0xbd, 0x84, 0x35, 0x9d, 0x44, 0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9,
-                0x4a, 0x7c, 0x19, 0x58, 0xd1, 0xf8, 0xad, 0xa5, 0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2,
-                0xd1, 0x7b, 0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59, 0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d,
-                0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce, 0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40, 0xcc, 0x24,
-                0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6, 0x07, 0x9c, 0xad, 0x88, 0x42, 0x5d, 0xe6, 0xbd,
-                0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf, 0x67, 0xbf, 0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70,
-                0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59, 0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53,
-                0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa, 0xd8, 0x78, 0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc,
-                0x27, 0x32, 0xe6, 0x94, 0x85, 0xbb, 0xc9, 0xc9, 0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b,
-                0xec, 0xcf, 0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2, 0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07,
-                0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75, 0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5, 0x55, 0x5a,
-                0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d, 0x08, 0x59, 0xdc, 0x65, 0xa4, 0x61, 0x28, 0xba,
-                0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31, 0x8c, 0x78, 0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b,
-                0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22, 0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a,
-                0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a, 0xe0, 0x78, 0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b,
-                0xe3, 0xea, 0x70, 0x82, 0xff, 0x7f, 0xc9, 0x88, 0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e,
-                0xc9, 0x60, 0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9, 0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8,
-                0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4, 0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a, 0xcd, 0xb7,
-                0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55, 0xad, 0xe8, 0x29, 0x72, 0x97, 0xd0, 0x7a, 0xd1,
-                0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01, 0x65, 0x13, 0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c,
-                0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb, 0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d,
-                0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c, 0x4b, 0x4c, 0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8,
-                0xca, 0x61, 0x78, 0x3a, 0xac, 0xec, 0x57, 0xfb, 0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8,
-                0x5f, 0x67, 0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14, 0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf,
-                0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9, 0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b, 0x29, 0x27,
-                0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b, 0x68, 0x40, 0x1a, 0xde, 0xbf, 0x5a, 0x7e, 0x08,
-                0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a, 0x65, 0x04, 0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7,
-                0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67, 0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49,
-                0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf, 0x19, 0x1f, 0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57,
-                0xf7, 0xf7, 0x27, 0x6c, 0xd4, 0x19, 0xc1, 0x7a, 0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4,
-                0x88, 0xac, 0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5, 0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1,
-                0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d, 0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56, 0x00, 0xa3,
-                0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e, 0x30, 0x8a, 0xa3, 0x42, 0x72, 0x1a, 0xac, 0x09,
-                0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79, 0x37, 0x65, 0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e,
-                0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4, 0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2,
-                0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f, 0x25, 0x66, 0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f,
-                0xb9, 0x32, 0x46, 0xf6, 0xb1, 0x11, 0x63, 0x98, 0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41,
-                0xe9, 0x89, 0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c, 0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5,
-                0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3, 0x07, 0xba, 0x53, 0x71, 0x52, 0xf3, 0xf1, 0x61,
-                0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9, 0x0d, 0x11, 0xfa, 0xa9, 0x33, 0xa1, 0x5e, 0xf1,
-                0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45, 0xa9, 0x67, 0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34,
-                0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd, 0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d,
-                0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c, 0x41, 0x85, 0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e,
-                0x4d, 0xc1, 0xff, 0xc8, 0x72, 0xee, 0xee, 0x47, 0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c,
-                0x06, 0x18, 0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef, 0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca,
-                0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08, 0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9, 0xd0,
-            };
-
-            var publicKey = new byte[]
-            {
-                0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34, 0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e, 0x83, 0x86,
-                0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5, 0x1f, 0xef, 0x7c, 0x59, 0x7f, 0x1d, 0x42, 0x6e,
-            };
-
-            var privateKey = new byte[]
-            {
-                0xf5, 0xe5, 0x76, 0x7c, 0xf1, 0x53, 0x31, 0x95, 0x17, 0x63, 0x0f, 0x22, 0x68, 0x76, 0xb8, 0x6c,
-                0x81, 0x60, 0xcc, 0x58, 0x3b, 0xc0, 0x13, 0x74, 0x4c, 0x6b, 0xf2, 0x55, 0xf5, 0xcc, 0x0e, 0xe5,
-            };
-
-            var expectedSignature = new byte[]
-            {
-                0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2, 0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32, 0x6a, 0x3a,
-                0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb, 0x67, 0xcb, 0xf6, 0xe4, 0x60, 0xfe, 0xc3, 0x50,
-                0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45, 0x28, 0xec, 0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b,
-                0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6, 0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03,
-            };
-
-            var signature = await Signer.SignAsync(message, privateKey, publicKey);
-            Assert.That(signature, Is.EqualTo(expectedSignature));
-
-            var validationResult = await Signer.ValidateAsync(signature, message, publicKey);
-            Assert.That(validationResult, Is.True);
-        }
-    }
-}
-
+#if DEBUG
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+using NUnit.Framework;
+
+namespace Ed25519
+{
+    internal sealed class SignerTests
+    {
+        [Test]
+        public void TestSignatureLength()
+        {
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var signature = Signer.Sign(message, privateKey, publicKey);
+
+            Assert.That(signature.Length, Is.EqualTo(64));
+        }
+
+        [Test]
+        public async Task TestSignatureLengthAsync()
+        {
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            var signature = await Signer.SignAsync(message, privateKey, publicKey);
+
+            Assert.That(signature.Length, Is.EqualTo(64));
+        }
+
+        [Test]
+        public void TestManipulatedPublicKey()
+        {
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey()[2..];
+
+            try
+            {
+                Signer.Sign(message, privateKey, publicKey);
+                Assert.Fail("Should not be reached!");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.That(true); // Public key is too short!
+            }
+        }
+
+        [Test]
+        public async Task TestManipulatedPublicKeyAsync()
+        {
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = (await privateKey.ExtractPublicKeyAsync())[2..];
+
+            try
+            {
+                await Signer.SignAsync(message, privateKey, publicKey);
+                Assert.Fail("Should not be reached!");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.That(true); // Public key is too short!
+            }
+        }
+
+        [Test]
+        public void TestSimpleMessageValidation()
+        {
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var signature = Signer.Sign(message, privateKey, publicKey);
+            var validationResult = Signer.Validate(signature, message, publicKey);
+
+            Assert.That(validationResult, Is.True);
+        }
+
+        [Test]
+        public async Task TestSimpleMessageValidationAsync()
+        {
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            var signature = await Signer.SignAsync(message, privateKey, publicKey);
+            var validationResult = await Signer.ValidateAsync(signature, message, publicKey);
+
+            Assert.That(validationResult, Is.True);
+        }
+
+        [Test]
+        public void TestSlightlyChangedMessageValidation()
+        {
+            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var signature = Signer.Sign(messageOriginal, privateKey, publicKey);
+
+            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
+            var validationResult = Signer.Validate(signature, messageAltered, publicKey);
+
+            Assert.That(validationResult, Is.False); // Message was altered!
+        }
+
+        [Test]
+        public async Task TestSlightlyChangedMessageValidationAsync()
+        {
+            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            var signature = await Signer.SignAsync(messageOriginal, privateKey, publicKey);
+
+            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
+            var validationResult = await Signer.ValidateAsync(signature, messageAltered, publicKey);
+
+            Assert.That(validationResult, Is.False); // Message was altered!
+        }
+
+        [Test]
+        public void TestSlightlyChangedMessageDifferentSignatures()
+        {
+            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
+
+            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
+            var signatureAltered = Signer.Sign(messageAltered, privateKey, publicKey);
+
+            // Two different messages must produce different signatures!
+            Assert.That(signatureOriginal.ToArray(), Is.Not.EqualTo(signatureAltered.ToArray()));
+        }
+
+        [Test]
+        public async Task TestSlightlyChangedMessageDifferentSignaturesAsync()
+        {
+            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message.");
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            var signatureOriginal = await Signer.SignAsync(messageOriginal, privateKey, publicKey);
+
+            var messageAltered = Encoding.UTF8.GetBytes("This is a test message!");
+            var signatureAltered = await Signer.SignAsync(messageAltered, privateKey, publicKey);
+
+            // Two different messages must produce different signatures!
+            Assert.That(signatureOriginal, Is.Not.EqualTo(signatureAltered));
+        }
+
+        [Test]
+        public void TestMessageValidationWithDifferentEncodings()
+        {
+            var messageOriginal = Encoding.ASCII.GetBytes("This is a test message.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
+
+            var messageAltered = Encoding.UTF32.GetBytes("This is a test message.");
+            var signatureAltered = Signer.Sign(messageAltered, privateKey, publicKey);
+
+            // Two equal messages with different encoding must produce different signatures:
+            Assert.That(signatureOriginal.ToArray(), Is.Not.EqualTo(signatureAltered.ToArray()));
+        }
+
+        [Test]
+        public async Task TestMessageValidationWithDifferentEncodingsAsync()
+        {
+            var messageOriginal = Encoding.ASCII.GetBytes("This is a test message.");
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            var signatureOriginal = await Signer.SignAsync(messageOriginal, privateKey, publicKey);
+
+            var messageAltered = Encoding.UTF32.GetBytes("This is a test message.");
+            var signatureAltered = await Signer.SignAsync(messageAltered, privateKey, publicKey);
+
+            // Two equal messages with different encoding must produce different signatures:
+            Assert.That(signatureOriginal, Is.Not.EqualTo(signatureAltered));
+        }
+
+        [Test]
+        public void TestMessageWithUmlautsAndDifferentEncodings()
+        {
+            var messageOriginal = Encoding.ASCII.GetBytes("This is a test message with umlauts äöü.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
+
+            var messageAltered = Encoding.UTF8.GetBytes("This is a test message with umlauts äöü.");
+            var signatureAltered = Signer.Sign(messageAltered, privateKey, publicKey);
+
+            // Two equal messages with different encoding must produce different signatures:
+            Assert.That(signatureOriginal.ToArray(), Is.Not.EqualTo(signatureAltered.ToArray()));
+        }
+
+        [Test]
+        public void TestMessageWithUmlauts()
+        {
+            var messageOriginal = Encoding.UTF8.GetBytes("This is a test message with umlauts äöü.");
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var signatureOriginal = Signer.Sign(messageOriginal, privateKey, publicKey);
+
+            var message2 = Encoding.UTF8.GetBytes("This is a test message with umlauts äöü.");
+            var signature2 = Signer.Sign(message2, privateKey, publicKey);
+            var validationResult = Signer.Validate(signatureOriginal, message2, publicKey);
+
+            // Two equal messages must produce same signatures:
+            Assert.That(signatureOriginal.ToArray(), Is.EqualTo(signature2.ToArray()));
+            Assert.That(validationResult, Is.True);
+        }
+
+        [Test]
+        public void TestKeyGeneratorWithoutPassword()
+        {
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+
+            Assert.That(privateKey.Length, Is.EqualTo(32));
+            Assert.That(publicKey.Length, Is.EqualTo(32));
+            Assert.That(privateKey.ToArray(), Is.Not.EqualTo(publicKey.ToArray()));
+        }
+
+        [Test]
+        public async Task TestKeyGeneratorWithoutPasswordAsync()
+        {
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+
+            Assert.That(privateKey.Length, Is.EqualTo(32));
+            Assert.That(publicKey.Length, Is.EqualTo(32));
+            Assert.That(privateKey, Is.Not.EqualTo(publicKey));
+        }
+
+        [Test]
+        public void TestKeyGeneratorWithPassword()
+        {
+            var password = "test password";
+            var privateKeyEncrypted = Signer.GeneratePrivateKey(password);
+            var privateKeyDecrypted = privateKeyEncrypted.DecryptPrivateKey(password);
+            var publicKey = privateKeyDecrypted.ExtractPublicKey();
+
+            Assert.That(privateKeyEncrypted.Length, Is.GreaterThan(32));
+            Assert.That(privateKeyDecrypted.Length, Is.EqualTo(32));
+            Assert.That(publicKey.Length, Is.EqualTo(32));
+            Assert.That(privateKeyEncrypted.ToArray(), Is.Not.EqualTo(privateKeyDecrypted.ToArray()));
+            Assert.That(privateKeyEncrypted.ToArray(), Is.Not.EqualTo(publicKey.ToArray()));
+            Assert.That(privateKeyDecrypted.ToArray(), Is.Not.EqualTo(publicKey.ToArray()));
+        }
+
+        [Test]
+        public async Task TestKeyGeneratorWithPasswordAsync()
+        {
+            var password = "test password";
+            var privateKeyEncrypted = await Signer.GeneratePrivateKeyAsync(password);
+            var privateKeyDecrypted = await privateKeyEncrypted.DecryptPrivateKeyAsync(password);
+            var publicKey = await privateKeyDecrypted.ExtractPublicKeyAsync();
+
+            Assert.That(privateKeyEncrypted.Length, Is.GreaterThan(32));
+            Assert.That(privateKeyDecrypted.Length, Is.EqualTo(32));
+            Assert.That(publicKey.Length, Is.EqualTo(32));
+            Assert.That(privateKeyEncrypted, Is.Not.EqualTo(privateKeyDecrypted));
+            Assert.That(privateKeyEncrypted, Is.Not.EqualTo(publicKey));
+            Assert.That(privateKeyDecrypted, Is.Not.EqualTo(publicKey));
+        }
+
+        [Test]
+        public void TestMultipleKeysWithoutPassword()
+        {
+            var privateKey1 = Signer.GeneratePrivateKey();
+            var privateKey2 = Signer.GeneratePrivateKey();
+            var privateKey3 = Signer.GeneratePrivateKey();
+
+            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey2.ToArray()));
+            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
+            Assert.That(privateKey2.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
+        }
+
+        [Test]
+        public async Task TestMultipleKeysWithoutPasswordAsync()
+        {
+            var privateKey1 = await Signer.GeneratePrivateKeyAsync();
+            var privateKey2 = await Signer.GeneratePrivateKeyAsync();
+            var privateKey3 = await Signer.GeneratePrivateKeyAsync();
+
+            Assert.That(privateKey1, Is.Not.EqualTo(privateKey2));
+            Assert.That(privateKey1, Is.Not.EqualTo(privateKey3));
+            Assert.That(privateKey2, Is.Not.EqualTo(privateKey3));
+        }
+
+        [Test]
+        public void TestMultipleKeysWithPassword()
+        {
+            var password = "test password";
+            var privateKey1 = Signer.GeneratePrivateKey(password);
+            var privateKey2 = Signer.GeneratePrivateKey(password);
+            var privateKey3 = Signer.GeneratePrivateKey(password);
+
+            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey2.ToArray()));
+            Assert.That(privateKey1.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
+            Assert.That(privateKey2.ToArray(), Is.Not.EqualTo(privateKey3.ToArray()));
+        }
+
+        [Test]
+        public async Task TestMultipleKeysWithPasswordAsync()
+        {
+            var password = "test password";
+            var privateKey1 = await Signer.GeneratePrivateKeyAsync(password);
+            var privateKey2 = await Signer.GeneratePrivateKeyAsync(password);
+            var privateKey3 = await Signer.GeneratePrivateKeyAsync(password);
+
+            Assert.That(privateKey1, Is.Not.EqualTo(privateKey2));
+            Assert.That(privateKey1, Is.Not.EqualTo(privateKey3));
+            Assert.That(privateKey2, Is.Not.EqualTo(privateKey3));
+        }
+
+        [Test]
+        public void TestPublicKeyFromRandomData()
+        {
+            var privateKey = new byte[] {0x00, 0xac, 0x48}.AsSpan();
+            var publicKey = privateKey.ExtractPublicKey();
+
+            Assert.That(privateKey.Length, Is.EqualTo(3));
+            Assert.That(publicKey.Length, Is.EqualTo(0));
+            Assert.That(publicKey.IsEmpty, Is.True);
+        }
+
+        [Test]
+        public async Task TestPublicKeyFromRandomDataAsync()
+        {
+            var privateKey = new byte[] { 0x00, 0xac, 0x48 };
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+
+            Assert.That(privateKey.Length, Is.EqualTo(3));
+            Assert.That(publicKey, Is.Null);
+        }
+
+        [Test]
+        public void TestWritingAndLoadingKeys()
+        {
+            var tempFilePrivate = Path.GetTempFileName();
+            var tempFilePublic = Path.GetTempFileName();
+
+            try
+            {
+                var privateKey = Signer.GeneratePrivateKey();
+                var publicKey = privateKey.ExtractPublicKey();
+
+                privateKey.WriteKey(tempFilePrivate);
+                publicKey.WriteKey(tempFilePublic);
+
+                var reloadPrivateKey = Signer.LoadKey(tempFilePrivate);
+                var reloadPublicKey = Signer.LoadKey(tempFilePublic);
+
+                Assert.That(reloadPublicKey.Length, Is.EqualTo(32));
+                Assert.That(reloadPrivateKey.Length, Is.EqualTo(32));
+
+                Assert.That(reloadPublicKey.ToArray(), Is.EqualTo(publicKey.ToArray()));
+                Assert.That(reloadPrivateKey.ToArray(), Is.EqualTo(privateKey.ToArray()));
+            }
+            finally
+            {
+                File.Delete(tempFilePublic);
+                File.Delete(tempFilePrivate);
+            }
+        }
+
+        [Test]
+        public async Task TestWritingAndLoadingKeysAsync()
+        {
+            var tempFilePrivate = Path.GetTempFileName();
+            var tempFilePublic = Path.GetTempFileName();
+
+            try
+            {
+                var privateKey = await Signer.GeneratePrivateKeyAsync();
+                var publicKey = await privateKey.ExtractPublicKeyAsync();
+
+                await privateKey.WriteKeyAsync(tempFilePrivate);
+                await publicKey.WriteKeyAsync(tempFilePublic);
+
+                var reloadPrivateKey = await Signer.LoadKeyAsync(tempFilePrivate);
+                var reloadPublicKey = await Signer.LoadKeyAsync(tempFilePublic);
+
+                Assert.That(reloadPublicKey.Length, Is.EqualTo(32));
+                Assert.That(reloadPrivateKey.Length, Is.EqualTo(32));
+
+                Assert.That(reloadPublicKey, Is.EqualTo(publicKey));
+                Assert.That(reloadPrivateKey, Is.EqualTo(privateKey));
+            }
+            finally
+            {
+                File.Delete(tempFilePublic);
+                File.Delete(tempFilePrivate);
+            }
+        }
+
+        [Test]
+        public void TestExtractPublicKeyFromEncryptedPrivateKey()
+        {
+            var privateKeyEncrypted = Signer.GeneratePrivateKey("secret password");
+            var privateKeyDecrypted = privateKeyEncrypted.DecryptPrivateKey("secret password");
+            var publicKeyFromDecrypted = privateKeyDecrypted.ExtractPublicKey();
+            var publicKeyFromEncrypted = privateKeyEncrypted.ExtractPublicKey();
+
+            Assert.That(publicKeyFromDecrypted.ToArray(), Is.Not.EqualTo(publicKeyFromEncrypted.ToArray()));
+        }
+
+        [Test]
+        public async Task TestExtractPublicKeyFromEncryptedPrivateKeyAsync()
+        {
+            var privateKeyEncrypted = await Signer.GeneratePrivateKeyAsync("secret password");
+            var privateKeyDecrypted = await privateKeyEncrypted.DecryptPrivateKeyAsync("secret password");
+            var publicKeyFromDecrypted = await privateKeyDecrypted.ExtractPublicKeyAsync();
+            var publicKeyFromEncrypted = await privateKeyEncrypted.ExtractPublicKeyAsync();
+
+            Assert.That(publicKeyFromDecrypted, Is.Not.EqualTo(publicKeyFromEncrypted));
+        }
+
+        [Test]
+        public void TestExtractPublicKeyFromTooShortPrivateKey()
+        {
+            var privateKey= Signer.GeneratePrivateKey()[..6]; // Six first bytes from private key!
+            var publicKey = privateKey.ExtractPublicKey();
+            Assert.That(publicKey == ReadOnlySpan<byte>.Empty, Is.True);
+        }
+
+        [Test]
+        public async Task TestExtractPublicKeyFromTooShortPrivateKeyAsync()
+        {
+            var privateKey = (await Signer.GeneratePrivateKeyAsync())[..6]; // Six first bytes from private key!
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            Assert.That(publicKey, Is.Null);
+        }
+
+        [Test]
+        public void TestSigningBehaviourPrivateKeyWithPassword()
+        {
+            var privateKeyEncrypted = Signer.GeneratePrivateKey("secret password");
+            var privateKeyDecrypted = privateKeyEncrypted.DecryptPrivateKey("secret password");
+            var publicKey = privateKeyDecrypted.ExtractPublicKey();
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var signaturePrivateKeyDecrypted = Signer.Sign(message, privateKeyDecrypted, publicKey);
+            var signaturePrivateKeyEncrypted = Signer.Sign(message, privateKeyEncrypted[..32], publicKey); // Note: The encrypted private key is 64 bytes long!
+            var validationDecrypted = Signer.Validate(signaturePrivateKeyDecrypted, message, publicKey);
+            var validationEncrypted = Signer.Validate(signaturePrivateKeyEncrypted, message, publicKey);
+
+            Assert.That(validationDecrypted, Is.True); // This is the intended behaviour. The public key was derived from the decrypted private key.
+            Assert.That(validationEncrypted, Is.False); // This should fail, because the public key does not match the *encrypted* private key!
+            Assert.That(signaturePrivateKeyEncrypted.ToArray(), Is.Not.EqualTo(signaturePrivateKeyDecrypted.ToArray()));
+        }
+
+        [Test]
+        public async Task TestSigningBehaviourPrivateKeyWithPasswordAsync()
+        {
+            var privateKeyEncrypted = await Signer.GeneratePrivateKeyAsync("secret password");
+            var privateKeyDecrypted = await privateKeyEncrypted.DecryptPrivateKeyAsync("secret password");
+            var publicKey = await privateKeyDecrypted.ExtractPublicKeyAsync();
+            var message = Encoding.UTF8.GetBytes("This is a test message.");
+            var signaturePrivateKeyDecrypted = await Signer.SignAsync(message, privateKeyDecrypted, publicKey);
+            var signaturePrivateKeyEncrypted = await Signer.SignAsync(message, privateKeyEncrypted[..32], publicKey); // Note: The encrypted private key is 64 bytes long!
+            var validationDecrypted = await Signer.ValidateAsync(signaturePrivateKeyDecrypted, message, publicKey);
+            var validationEncrypted = await Signer.ValidateAsync(signaturePrivateKeyEncrypted, message, publicKey);
+
+            Assert.That(validationDecrypted, Is.True); // This is the intended behaviour. The public key was derived from the decrypted private key.
+            Assert.That(validationEncrypted, Is.False); // This should fail, because the public key does not match the *encrypted* private key!
+            Assert.That(signaturePrivateKeyEncrypted, Is.Not.EqualTo(signaturePrivateKeyDecrypted));
+        }
+
+        [Test]
+        public void TestPerformanceSigning()
+        {
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var rng = new Random();
+            var payload = new byte[1_024];
+            var stopwatch = new Stopwatch();
+            var desiredRuntime = TimeSpan.FromSeconds(30);
+            var counter = 0;
+
+            while (true)
+            {
+                counter++;
+                rng.NextBytes(payload);
+                
+                stopwatch.Start();
+                Signer.Sign(payload, privateKey, publicKey);
+                stopwatch.Stop();
+
+                if(stopwatch.Elapsed >= desiredRuntime)
+                    break;
+            }
+
+            var result = counter / stopwatch.Elapsed.TotalSeconds;
+            TestContext.Write($"Benchmark for signing messages: {result:0.00} messages/second");
+            Assert.That(true);
+        }
+
+        [Test]
+        public async Task TestPerformanceSigningAsync()
+        {
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            var rng = new Random();
+            var payload = new byte[1_024];
+            var stopwatch = new Stopwatch();
+            var desiredRuntime = TimeSpan.FromSeconds(30);
+            var counter = 0;
+
+            while (true)
+            {
+                counter++;
+                rng.NextBytes(payload);
+
+                stopwatch.Start();
+                await Signer.SignAsync(payload, privateKey, publicKey);
+                stopwatch.Stop();
+
+                if (stopwatch.Elapsed >= desiredRuntime)
+                    break;
+            }
+
+            var result = counter / stopwatch.Elapsed.TotalSeconds;
+            TestContext.Write($"Benchmark for signing messages: {result:0.00} messages/second");
+            Assert.That(true);
+        }
+
+        [Test]
+        public void TestPerformanceValidation()
+        {
+            var privateKey = Signer.GeneratePrivateKey();
+            var publicKey = privateKey.ExtractPublicKey();
+            var rng = new Random();
+            var payload = new byte[1_024];
+            var stopwatch = new Stopwatch();
+            var desiredRuntime = TimeSpan.FromSeconds(30);
+            var counter = 0;
+
+            while (true)
+            {
+                counter++;
+                rng.NextBytes(payload);
+
+                var signature = Signer.Sign(payload, privateKey, publicKey);
+                
+                stopwatch.Start();
+                Signer.Validate(signature, payload, publicKey);
+                stopwatch.Stop();
+
+                if (stopwatch.Elapsed >= desiredRuntime)
+                    break;
+            }
+
+            var result = counter / stopwatch.Elapsed.TotalSeconds;
+            TestContext.Write($"Benchmark for validation of messages: {result:0.00} messages/second");
+            Assert.That(true);
+        }
+
+        [Test]
+        public async Task TestPerformanceValidationAsync()
+        {
+            var privateKey = await Signer.GeneratePrivateKeyAsync();
+            var publicKey = await privateKey.ExtractPublicKeyAsync();
+            var rng = new Random();
+            var payload = new byte[1_024];
+            var stopwatch = new Stopwatch();
+            var desiredRuntime = TimeSpan.FromSeconds(30);
+            var counter = 0;
+
+            while (true)
+            {
+                counter++;
+                rng.NextBytes(payload);
+
+                var signature = await Signer.SignAsync(payload, privateKey, publicKey);
+
+                stopwatch.Start();
+                await Signer.ValidateAsync(signature, payload, publicKey);
+                stopwatch.Stop();
+
+                if (stopwatch.Elapsed >= desiredRuntime)
+                    break;
+            }
+
+            var result = counter / stopwatch.Elapsed.TotalSeconds;
+            TestContext.Write($"Benchmark for validation of messages: {result:0.00} messages/second");
+            Assert.That(true);
+        }
+
+        [Test]
+        public void TestLoadingNotExistingKey()
+        {
+            var key = Signer.LoadKey(Guid.NewGuid().ToString());
+            Assert.That(key == ReadOnlySpan<byte>.Empty, Is.True);
+        }
+
+        [Test]
+        public async Task TestLoadingNotExistingKeyAsync()
+        {
+            var key = await Signer.LoadKeyAsync(Guid.NewGuid().ToString());
+            Assert.That(key, Is.Null);
+        }
+
+        // See https://tools.ietf.org/html/rfc8032#section-7.1
+        [Test]
+        public void TestRFC8032Test01EmptyMessage()
+        {
+            var message = new ReadOnlySpan<byte>(); // Empty message!
+            var publicKey = new byte[]
+            {
+                0xd7, 0x5a, 0x98, 0x01, 0x82, 0xb1, 0x0a, 0xb7, 0xd5, 0x4b, 0xfe, 0xd3, 0xc9, 0x64, 0x07, 0x3a,
+                0x0e, 0xe1, 0x72, 0xf3, 0xda, 0xa6, 0x23, 0x25, 0xaf, 0x02, 0x1a, 0x68, 0xf7, 0x07, 0x51, 0x1a,
+            };
+
+            var privateKey = new byte[]
+            {
+                0x9d, 0x61, 0xb1, 0x9d, 0xef, 0xfd, 0x5a, 0x60, 0xba, 0x84, 0x4a, 0xf4, 0x92, 0xec, 0x2c, 0xc4,
+                0x44, 0x49, 0xc5, 0x69, 0x7b, 0x32, 0x69, 0x19, 0x70, 0x3b, 0xac, 0x03, 0x1c, 0xae, 0x7f, 0x60,
+            };
+
+            var expectedSignature = new byte[]
+            {
+                0xe5, 0x56, 0x43, 0x00, 0xc3, 0x60, 0xac, 0x72, 0x90, 0x86, 0xe2, 0xcc, 0x80, 0x6e, 0x82, 0x8a,
+                0x84, 0x87, 0x7f, 0x1e, 0xb8, 0xe5, 0xd9, 0x74, 0xd8, 0x73, 0xe0, 0x65, 0x22, 0x49, 0x01, 0x55,
+                0x5f, 0xb8, 0x82, 0x15, 0x90, 0xa3, 0x3b, 0xac, 0xc6, 0x1e, 0x39, 0x70, 0x1c, 0xf9, 0xb4, 0x6b,
+                0xd2, 0x5b, 0xf5, 0xf0, 0x59, 0x5b, 0xbe, 0x24, 0x65, 0x51, 0x41, 0x43, 0x8e, 0x7a, 0x10, 0x0b,
+            };
+
+            var signature = Signer.Sign(message, privateKey, publicKey);
+            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
+
+            var validationResult = Signer.Validate(signature, message, publicKey);
+            Assert.That(validationResult, Is.True);
+        }
+
+        // See https://tools.ietf.org/html/rfc8032#section-7.1
+        [Test]
+        public void TestRFC8032Test02OneByteMessage()
+        {
+            var message = new byte[]
+            {
+                0x72,
+            };
+
+            var publicKey = new byte[]
+            {
+                0x3d, 0x40, 0x17, 0xc3, 0xe8, 0x43, 0x89, 0x5a, 0x92, 0xb7, 0x0a, 0xa7, 0x4d, 0x1b, 0x7e, 0xbc,
+                0x9c, 0x98, 0x2c, 0xcf, 0x2e, 0xc4, 0x96, 0x8c, 0xc0, 0xcd, 0x55, 0xf1, 0x2a, 0xf4, 0x66, 0x0c,
+            };
+
+            var privateKey = new byte[]
+            {
+                0x4c, 0xcd, 0x08, 0x9b, 0x28, 0xff, 0x96, 0xda, 0x9d, 0xb6, 0xc3, 0x46, 0xec, 0x11, 0x4e, 0x0f,
+                0x5b, 0x8a, 0x31, 0x9f, 0x35, 0xab, 0xa6, 0x24, 0xda, 0x8c, 0xf6, 0xed, 0x4f, 0xb8, 0xa6, 0xfb,
+            };
+
+            var expectedSignature = new byte[]
+            {
+                0x92, 0xa0, 0x09, 0xa9, 0xf0, 0xd4, 0xca, 0xb8, 0x72, 0x0e, 0x82, 0x0b, 0x5f, 0x64, 0x25, 0x40,
+                0xa2, 0xb2, 0x7b, 0x54, 0x16, 0x50, 0x3f, 0x8f, 0xb3, 0x76, 0x22, 0x23, 0xeb, 0xdb, 0x69, 0xda,
+                0x08, 0x5a, 0xc1, 0xe4, 0x3e, 0x15, 0x99, 0x6e, 0x45, 0x8f, 0x36, 0x13, 0xd0, 0xf1, 0x1d, 0x8c,
+                0x38, 0x7b, 0x2e, 0xae, 0xb4, 0x30, 0x2a, 0xee, 0xb0, 0x0d, 0x29, 0x16, 0x12, 0xbb, 0x0c, 0x00,
+            };
+
+            var signature = Signer.Sign(message, privateKey, publicKey);
+            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
+
+            var validationResult = Signer.Validate(signature, message, publicKey);
+            Assert.That(validationResult, Is.True);
+        }
+
+        // See https://tools.ietf.org/html/rfc8032#section-7.1
+        [Test]
+        public void TestRFC8032Test03TwoByteMessage()
+        {
+            var message = new byte[]
+            {
+                0xaf, 0x82,
+            };
+
+            var publicKey = new byte[]
+            {
+                0xfc, 0x51, 0xcd, 0x8e, 0x62, 0x18, 0xa1, 0xa3, 0x8d, 0xa4, 0x7e, 0xd0, 0x02, 0x30, 0xf0, 0x58,
+                0x08, 0x16, 0xed, 0x13, 0xba, 0x33, 0x03, 0xac, 0x5d, 0xeb, 0x91, 0x15, 0x48, 0x90, 0x80, 0x25,
+
+            };
+
+            var privateKey = new byte[]
+            {
+                0xc5, 0xaa, 0x8d, 0xf4, 0x3f, 0x9f, 0x83, 0x7b, 0xed, 0xb7, 0x44, 0x2f, 0x31, 0xdc, 0xb7, 0xb1,
+                0x66, 0xd3, 0x85, 0x35, 0x07, 0x6f, 0x09, 0x4b, 0x85, 0xce, 0x3a, 0x2e, 0x0b, 0x44, 0x58, 0xf7,
+            };
+
+            var expectedSignature = new byte[]
+            {
+                0x62, 0x91, 0xd6, 0x57, 0xde, 0xec, 0x24, 0x02, 0x48, 0x27, 0xe6, 0x9c, 0x3a, 0xbe, 0x01, 0xa3,
+                0x0c, 0xe5, 0x48, 0xa2, 0x84, 0x74, 0x3a, 0x44, 0x5e, 0x36, 0x80, 0xd7, 0xdb, 0x5a, 0xc3, 0xac,
+                0x18, 0xff, 0x9b, 0x53, 0x8d, 0x16, 0xf2, 0x90, 0xae, 0x67, 0xf7, 0x60, 0x98, 0x4d, 0xc6, 0x59,
+                0x4a, 0x7c, 0x15, 0xe9, 0x71, 0x6e, 0xd2, 0x8d, 0xc0, 0x27, 0xbe, 0xce, 0xea, 0x1e, 0xc4, 0x0a,
+            };
+
+            var signature = Signer.Sign(message, privateKey, publicKey);
+            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
+
+            var validationResult = Signer.Validate(signature, message, publicKey);
+            Assert.That(validationResult, Is.True);
+        }
+
+        // See https://tools.ietf.org/html/rfc8032#section-7.1
+        [Test]
+        public void TestRFC8032Test04With1kMessage()
+        {
+            var message = new byte[]
+            {
+                0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43, 0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5, 0x49, 0x08,
+                0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91, 0xea, 0xbd, 0x33, 0x45, 0xe3, 0xe4, 0xeb, 0x98,
+                0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12, 0xee, 0x50, 0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1,
+                0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f, 0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8,
+                0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc, 0x49, 0x96, 0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57,
+                0x38, 0x82, 0x9a, 0xdb, 0x26, 0xc8, 0x1b, 0x37, 0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d,
+                0x65, 0x86, 0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0, 0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c,
+                0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b, 0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89, 0xff, 0xbc,
+                0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3, 0xa5, 0xe1, 0x99, 0x8b, 0xd1, 0x77, 0xe9, 0x3a,
+                0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e, 0xe5, 0xd0, 0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe,
+                0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82, 0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b,
+                0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40, 0x1a, 0xa6, 0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e,
+                0x06, 0x20, 0x3b, 0x33, 0x89, 0x0c, 0xc9, 0xb8, 0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9,
+                0xa3, 0x9c, 0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28, 0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef,
+                0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68, 0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b, 0xbc, 0x10,
+                0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1, 0x23, 0x1d, 0x20, 0x6b, 0xe6, 0xcd, 0x9e, 0xc7,
+                0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04, 0xed, 0x34, 0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4,
+                0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53, 0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1,
+                0x85, 0xce, 0x81, 0xbd, 0x84, 0x35, 0x9d, 0x44, 0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9,
+                0x4a, 0x7c, 0x19, 0x58, 0xd1, 0xf8, 0xad, 0xa5, 0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2,
+                0xd1, 0x7b, 0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59, 0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d,
+                0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce, 0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40, 0xcc, 0x24,
+                0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6, 0x07, 0x9c, 0xad, 0x88, 0x42, 0x5d, 0xe6, 0xbd,
+                0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf, 0x67, 0xbf, 0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70,
+                0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59, 0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53,
+                0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa, 0xd8, 0x78, 0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc,
+                0x27, 0x32, 0xe6, 0x94, 0x85, 0xbb, 0xc9, 0xc9, 0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b,
+                0xec, 0xcf, 0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2, 0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07,
+                0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75, 0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5, 0x55, 0x5a,
+                0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d, 0x08, 0x59, 0xdc, 0x65, 0xa4, 0x61, 0x28, 0xba,
+                0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31, 0x8c, 0x78, 0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b,
+                0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22, 0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a,
+                0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a, 0xe0, 0x78, 0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b,
+                0xe3, 0xea, 0x70, 0x82, 0xff, 0x7f, 0xc9, 0x88, 0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e,
+                0xc9, 0x60, 0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9, 0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8,
+                0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4, 0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a, 0xcd, 0xb7,
+                0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55, 0xad, 0xe8, 0x29, 0x72, 0x97, 0xd0, 0x7a, 0xd1,
+                0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01, 0x65, 0x13, 0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c,
+                0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb, 0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d,
+                0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c, 0x4b, 0x4c, 0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8,
+                0xca, 0x61, 0x78, 0x3a, 0xac, 0xec, 0x57, 0xfb, 0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8,
+                0x5f, 0x67, 0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14, 0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf,
+                0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9, 0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b, 0x29, 0x27,
+                0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b, 0x68, 0x40, 0x1a, 0xde, 0xbf, 0x5a, 0x7e, 0x08,
+                0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a, 0x65, 0x04, 0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7,
+                0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67, 0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49,
+                0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf, 0x19, 0x1f, 0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57,
+                0xf7, 0xf7, 0x27, 0x6c, 0xd4, 0x19, 0xc1, 0x7a, 0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4,
+                0x88, 0xac, 0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5, 0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1,
+                0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d, 0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56, 0x00, 0xa3,
+                0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e, 0x30, 0x8a, 0xa3, 0x42, 0x72, 0x1a, 0xac, 0x09,
+                0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79, 0x37, 0x65, 0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e,
+                0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4, 0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2,
+                0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f, 0x25, 0x66, 0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f,
+                0xb9, 0x32, 0x46, 0xf6, 0xb1, 0x11, 0x63, 0x98, 0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41,
+                0xe9, 0x89, 0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c, 0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5,
+                0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3, 0x07, 0xba, 0x53, 0x71, 0x52, 0xf3, 0xf1, 0x61,
+                0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9, 0x0d, 0x11, 0xfa, 0xa9, 0x33, 0xa1, 0x5e, 0xf1,
+                0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45, 0xa9, 0x67, 0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34,
+                0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd, 0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d,
+                0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c, 0x41, 0x85, 0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e,
+                0x4d, 0xc1, 0xff, 0xc8, 0x72, 0xee, 0xee, 0x47, 0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c,
+                0x06, 0x18, 0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef, 0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca,
+                0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08, 0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9, 0xd0,
+            };
+
+            var publicKey = new byte[]
+            {
+                0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34, 0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e, 0x83, 0x86,
+                0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5, 0x1f, 0xef, 0x7c, 0x59, 0x7f, 0x1d, 0x42, 0x6e,
+            };
+
+            var privateKey = new byte[]
+            {
+                0xf5, 0xe5, 0x76, 0x7c, 0xf1, 0x53, 0x31, 0x95, 0x17, 0x63, 0x0f, 0x22, 0x68, 0x76, 0xb8, 0x6c,
+                0x81, 0x60, 0xcc, 0x58, 0x3b, 0xc0, 0x13, 0x74, 0x4c, 0x6b, 0xf2, 0x55, 0xf5, 0xcc, 0x0e, 0xe5,
+            };
+
+            var expectedSignature = new byte[]
+            {
+                0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2, 0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32, 0x6a, 0x3a,
+                0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb, 0x67, 0xcb, 0xf6, 0xe4, 0x60, 0xfe, 0xc3, 0x50,
+                0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45, 0x28, 0xec, 0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b,
+                0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6, 0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03,
+            };
+
+            var signature = Signer.Sign(message, privateKey, publicKey);
+            Assert.That(signature.ToArray(), Is.EqualTo(expectedSignature));
+
+            var validationResult = Signer.Validate(signature, message, publicKey);
+            Assert.That(validationResult, Is.True);
+        }
+
+        // See https://tools.ietf.org/html/rfc8032#section-7.1
+        [Test]
+        public async Task TestRFC8032Test04With1kMessageAsync()
+        {
+            var message = new byte[]
+            {
+                0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43, 0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5, 0x49, 0x08,
+                0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91, 0xea, 0xbd, 0x33, 0x45, 0xe3, 0xe4, 0xeb, 0x98,
+                0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12, 0xee, 0x50, 0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1,
+                0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f, 0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8,
+                0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc, 0x49, 0x96, 0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57,
+                0x38, 0x82, 0x9a, 0xdb, 0x26, 0xc8, 0x1b, 0x37, 0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d,
+                0x65, 0x86, 0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0, 0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c,
+                0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b, 0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89, 0xff, 0xbc,
+                0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3, 0xa5, 0xe1, 0x99, 0x8b, 0xd1, 0x77, 0xe9, 0x3a,
+                0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e, 0xe5, 0xd0, 0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe,
+                0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82, 0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b,
+                0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40, 0x1a, 0xa6, 0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e,
+                0x06, 0x20, 0x3b, 0x33, 0x89, 0x0c, 0xc9, 0xb8, 0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9,
+                0xa3, 0x9c, 0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28, 0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef,
+                0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68, 0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b, 0xbc, 0x10,
+                0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1, 0x23, 0x1d, 0x20, 0x6b, 0xe6, 0xcd, 0x9e, 0xc7,
+                0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04, 0xed, 0x34, 0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4,
+                0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53, 0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1,
+                0x85, 0xce, 0x81, 0xbd, 0x84, 0x35, 0x9d, 0x44, 0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9,
+                0x4a, 0x7c, 0x19, 0x58, 0xd1, 0xf8, 0xad, 0xa5, 0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2,
+                0xd1, 0x7b, 0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59, 0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d,
+                0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce, 0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40, 0xcc, 0x24,
+                0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6, 0x07, 0x9c, 0xad, 0x88, 0x42, 0x5d, 0xe6, 0xbd,
+                0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf, 0x67, 0xbf, 0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70,
+                0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59, 0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53,
+                0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa, 0xd8, 0x78, 0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc,
+                0x27, 0x32, 0xe6, 0x94, 0x85, 0xbb, 0xc9, 0xc9, 0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b,
+                0xec, 0xcf, 0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2, 0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07,
+                0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75, 0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5, 0x55, 0x5a,
+                0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d, 0x08, 0x59, 0xdc, 0x65, 0xa4, 0x61, 0x28, 0xba,
+                0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31, 0x8c, 0x78, 0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b,
+                0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22, 0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a,
+                0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a, 0xe0, 0x78, 0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b,
+                0xe3, 0xea, 0x70, 0x82, 0xff, 0x7f, 0xc9, 0x88, 0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e,
+                0xc9, 0x60, 0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9, 0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8,
+                0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4, 0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a, 0xcd, 0xb7,
+                0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55, 0xad, 0xe8, 0x29, 0x72, 0x97, 0xd0, 0x7a, 0xd1,
+                0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01, 0x65, 0x13, 0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c,
+                0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb, 0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d,
+                0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c, 0x4b, 0x4c, 0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8,
+                0xca, 0x61, 0x78, 0x3a, 0xac, 0xec, 0x57, 0xfb, 0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8,
+                0x5f, 0x67, 0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14, 0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf,
+                0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9, 0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b, 0x29, 0x27,
+                0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b, 0x68, 0x40, 0x1a, 0xde, 0xbf, 0x5a, 0x7e, 0x08,
+                0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a, 0x65, 0x04, 0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7,
+                0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67, 0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49,
+                0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf, 0x19, 0x1f, 0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57,
+                0xf7, 0xf7, 0x27, 0x6c, 0xd4, 0x19, 0xc1, 0x7a, 0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4,
+                0x88, 0xac, 0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5, 0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1,
+                0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d, 0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56, 0x00, 0xa3,
+                0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e, 0x30, 0x8a, 0xa3, 0x42, 0x72, 0x1a, 0xac, 0x09,
+                0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79, 0x37, 0x65, 0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e,
+                0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4, 0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2,
+                0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f, 0x25, 0x66, 0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f,
+                0xb9, 0x32, 0x46, 0xf6, 0xb1, 0x11, 0x63, 0x98, 0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41,
+                0xe9, 0x89, 0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c, 0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5,
+                0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3, 0x07, 0xba, 0x53, 0x71, 0x52, 0xf3, 0xf1, 0x61,
+                0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9, 0x0d, 0x11, 0xfa, 0xa9, 0x33, 0xa1, 0x5e, 0xf1,
+                0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45, 0xa9, 0x67, 0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34,
+                0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd, 0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d,
+                0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c, 0x41, 0x85, 0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e,
+                0x4d, 0xc1, 0xff, 0xc8, 0x72, 0xee, 0xee, 0x47, 0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c,
+                0x06, 0x18, 0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef, 0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca,
+                0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08, 0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9, 0xd0,
+            };
+
+            var publicKey = new byte[]
+            {
+                0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34, 0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e, 0x83, 0x86,
+                0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5, 0x1f, 0xef, 0x7c, 0x59, 0x7f, 0x1d, 0x42, 0x6e,
+            };
+
+            var privateKey = new byte[]
+            {
+                0xf5, 0xe5, 0x76, 0x7c, 0xf1, 0x53, 0x31, 0x95, 0x17, 0x63, 0x0f, 0x22, 0x68, 0x76, 0xb8, 0x6c,
+                0x81, 0x60, 0xcc, 0x58, 0x3b, 0xc0, 0x13, 0x74, 0x4c, 0x6b, 0xf2, 0x55, 0xf5, 0xcc, 0x0e, 0xe5,
+            };
+
+            var expectedSignature = new byte[]
+            {
+                0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2, 0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32, 0x6a, 0x3a,
+                0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb, 0x67, 0xcb, 0xf6, 0xe4, 0x60, 0xfe, 0xc3, 0x50,
+                0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45, 0x28, 0xec, 0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b,
+                0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6, 0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03,
+            };
+
+            var signature = await Signer.SignAsync(message, privateKey, publicKey);
+            Assert.That(signature, Is.EqualTo(expectedSignature));
+
+            var validationResult = await Signer.ValidateAsync(signature, message, publicKey);
+            Assert.That(validationResult, Is.True);
+        }
+    }
+}
+
 #endif
\ No newline at end of file
diff --git a/Ed25519.sln b/Ed25519.sln
index 620cf86..1c174be 100644
--- a/Ed25519.sln
+++ b/Ed25519.sln
@@ -5,6 +5,8 @@ VisualStudioVersion = 16.0.29613.14
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Ed25519", "Ed25519\Ed25519.csproj", "{A36D2E95-E99A-4CB4-B735-417BAE007BC7}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Ed25519.Tests", "Ed25519.Tests\Ed25519.Tests.csproj", "{D725532A-B9B2-44D8-8E36-5EC76EAFDAAC}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{A36D2E95-E99A-4CB4-B735-417BAE007BC7}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A36D2E95-E99A-4CB4-B735-417BAE007BC7}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A36D2E95-E99A-4CB4-B735-417BAE007BC7}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D725532A-B9B2-44D8-8E36-5EC76EAFDAAC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D725532A-B9B2-44D8-8E36-5EC76EAFDAAC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D725532A-B9B2-44D8-8E36-5EC76EAFDAAC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D725532A-B9B2-44D8-8E36-5EC76EAFDAAC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Ed25519/Ed25519.csproj b/Ed25519/Ed25519.csproj
index 51aa39a..a542937 100644
--- a/Ed25519/Ed25519.csproj
+++ b/Ed25519/Ed25519.csproj
@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <Authors>Thorsten Sommer</Authors>
@@ -29,13 +29,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Encrypter" Version="1.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'" />
-    <PackageReference Include="NUnit" Version="3.12.0" Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.16.0" Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
+    <PackageReference Include="Encrypter" Version="1.0.2" />
   </ItemGroup>
 
 </Project>
diff --git a/Ed25519/EdPoint.cs b/Ed25519/EdPoint.cs
index 55c850d..b1c0cda 100644
--- a/Ed25519/EdPoint.cs
+++ b/Ed25519/EdPoint.cs
@@ -5,7 +5,7 @@
 
 namespace Ed25519
 {
-    internal struct EdPoint
+    public struct EdPoint
     {
         public BigInteger X { get; set; }
 
diff --git a/Ed25519/Extensions.cs b/Ed25519/Extensions.cs
index 5ccb6e0..e31748e 100644
--- a/Ed25519/Extensions.cs
+++ b/Ed25519/Extensions.cs
@@ -75,7 +75,7 @@ internal static BigInteger RecoverX(this BigInteger y)
             return x;
         }
 
-        internal static BigInteger ExpMod(this BigInteger number, BigInteger exponent, BigInteger modulo)
+        public static BigInteger ExpMod(this BigInteger number, BigInteger exponent, BigInteger modulo)
         {
             var numberOperations = (int)Math.Ceiling(BigInteger.Log(exponent, 2)) + 1;
             var series = new bool[numberOperations];