The verify_digest should explicitly fail if used with CurveEdTw, otherwise it leads to very hard to understand error:
AttributeError: 'PublicKey' object has no attribute 'order'
By the way, I was trying to verify the signature which was created for a message hashed with blake2b, and the correct usage is this (ie not to use verify_digest). But I had to study the code to understand the mistake.
pk: VerifyingKey = VerifyingKey.from_string(
public_key,
curve=Ed25519,
)
hash_object = blake2b(digest_size=32)
hash_object.update(message)
return pk.verify(
signature=signature,
data=hash_object.digest()
)
The
verify_digestshould explicitly fail if used with CurveEdTw, otherwise it leads to very hard to understand error:AttributeError: 'PublicKey' object has no attribute 'order'By the way, I was trying to verify the signature which was created for a message hashed with
blake2b, and the correct usage is this (ie not to useverify_digest). But I had to study the code to understand the mistake.