the noble/ed25519 library returns "hex invalid" error when signing private keys

[Aixoxa]

Am making use of the orderly api for authentication which uses the noble/ed25519 library for signing private keys but everytime i run the code the noble/ed25519 returns this error "hex invalid" I've tried with the node web crypto for generating ed25519 keys still returns the same error, please is there a fix for this?

Here's the error:

Here's the code below:

import { getPublicKeyAsync, signAsync } from '@noble/ed25519';
import { encodeBase58 } from 'ethers';

export async function signAndSendRequest(
orderlyAccountId: string,
privateKey: Uint8Array | string,
input: URL | string,
init?: RequestInit | undefined
): Promise {
const timestamp = Date.now();
const encoder = new TextEncoder();

const url = new URL(input);
let message = ${String(timestamp)}${init?.method ?? 'GET'}${url.pathname}${url.search};
if (init?.body) {
message += init.body;
}
const orderlySignature = await signAsync(encoder.encode(message), privateKey);

return fetch(input, {
headers: {
'Content-Type':
init?.method !== 'GET' && init?.method !== 'DELETE'
? 'application/json'
: 'application/x-www-form-urlencoded',
'orderly-timestamp': String(timestamp),
'orderly-account-id': orderlyAccountId,
'orderly-key': ed25519:${encodeBase58(await getPublicKeyAsync(privateKey))},
'orderly-signature': Buffer.from(orderlySignature).toString('base64url'),
...(init?.headers ?? {})
},
...(init ?? {})
});
}

[paulmillr]

The error means the hex string you've passed in privateKey is invalid. It probably has some weird non-hex characters (hex is 0-9 a-f), or is not padded (abcdef vs 0abcdef).

[Aixoxa]

I don't understand
the orderly api key generated from the logx was this ed25519:B4yEc8xMjoqdUiKT5ZT1b2cUy5cggZrbMPvCrqyjkQhf

[paulmillr]

Read up what's "hex string", and what's "base64-encoded strong".

[Aixoxa]

I know what they are but the orderly API key generated for me from logx is this ed25519:7tEoJo5hMBKBrQsqmc8yw1xNfoQCFQBVwQT1eFafRNRf so please how do i fix this with the @noble/ed25519 library

[Aixoxa]

Thank you so much Paul I finally fixed it.