ocrypto_ecdsa_p521_verify_hash()

int ocrypto_ecdsa_p521_verify_hash	(	const uint8_t	sig[132],
		const uint8_t	hash[64],
		const uint8_t	pk[132]
	)

ECDSA P-521 signature verification from SHA512 hash.

The signature sig of the message hash hash is verified using the signer's public key pk.

Parameters

sig	Input signature.
hash	Input hash.
pk	Signer's public key.

Return values

0	If the signature is valid.
-1	Otherwise.