ocrypto_rsa2048_pss_sha256_verify()

int ocrypto_rsa2048_pss_sha256_verify	(	const uint8_t	s[256],
		const uint8_t *	m,
		size_t	mlen,
		size_t	slen,
		const ocrypto_rsa2048_pub_key *	pk
	)

#include <crypto/nrf_oberon/include/ocrypto_rsa.h>

2048-bit RSA PSS SHA-256 signature verify.

The signature s of the input message m is verified.

Parameters

s	The 256-byte signature.
m	The signed message.
mlen	Length of m.
slen	The length of the salt.
pk	A valid 2048-bit RSA public key.

Return values

0	If the signature is valid.
-1	If verification failed.
-2	If the salt is too long.

Remarks

The key pk should be initialized with ocrypto_rsa2048_init_pub_key.