Signature verification on self-hosted keygen.sh

[hut36]

I have problem creating public key when verifying signature, the code is(taken from example-electron-license-activation):

 const verifyKey = crypto.createPublicKey({
    key: Buffer.from(KEYGEN_VERIFY_KEY, 'base64'),
    format: 'der',
    type: 'spki',
  })

KEYGEN_VERIFY_KEY is from data.meta.keys.ed25519 of GET /v1/accounts/{{account}}.

The error is:

Error: error:068000A8:asn1 encoding routines::wrong tag
    at Object.createPublicKey (node:internal/crypto/keys:619:12)
    ...
  opensslErrorStack: [ 'error:0688010A:asn1 encoding routines::nested asn1 error' ],
  library: 'asn1 encoding routines',
  reason: 'wrong tag',
  code: 'ERR_OSSL_ASN1_WRONG_TAG'
}

However, using a ed25519 key from official keygen.sh will not have error. I've no idea what I'm doing it wrong.

key doesn't work:
NTIzYzZkM2YwYTgwZjgyZGI0OGI3ZTliODBiMDA2Y2E3MGZmZGZkYWY2NTg0NzdkNGFlMzFlZDczOWNhOTQzNQ==

key works:
MCowBQYDK2VwAyEA6GAeSLaTg7pSAkX9B5cemD0G0ixCV8/YIwRgFHnO54g= (from example-electron-license-activation)

[ezekg]

That particular example only accepts a DER encoded public key, because that's what Node expects (it's an unfortunate choice by Node). Your Ed25519 key right now, via meta.publicKeys.ed25519 is base64 encoded. So you will need to first decode it to get the hex encoded key, and then convert that to DER. Here's a tutorial on converting the hex encoded key to DER encoding.

[hut36]

Thanks, the Ed25519 OID is exactly what I was missing.