verify_signature

Verify a signature against a message and public key.

More precisely, verify that signature was obtained with a procedure equivalent to get_signature(data_hash, privkey), where privkey and pubkey form a keypair.

Accepts valid public keys of size 33 or 65 bytes. Note that not all byte arrays of acceptable length constitute valid public keys.

Parameters

• data_hash — the original (unsigned) 32-byte array
• pubkey — the public key (33, 64 or 65 bytes)
• signature — the 64-byte signature to verify

Returns

true if the signature is valid, indicating that the message was indeed signed by the private key belonging to the keypair of the given public key; false otherwise

Throws

• exception — when: - data_hash does not have length 32 - signature does not have length 64 - pubkey does not have length 33 or 65 - pubkey is not a valid public key

Since

0.10.6