ocrypto_rsa_pss_sha256_verify()

int ocrypto_rsa_pss_sha256_verify	(	const uint8_t *	s,
		size_t	s_len,
		const uint8_t *	m,
		size_t	m_len,
		size_t	salt_len,
		const ocrypto_rsa_pub_key *	pk,
		uint32_t *	mem )

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

RSA PSS SHA-256 signature verify.

The signature s of the input message m is verified.

Parameters

s	The signature.
s_len	Length of s.
m	The signed message.
m_len	Length of m.
salt_len	The length of the salt.
pk	A valid RSA public key.
mem	The working memory. Length OCRYPTO_RSA_PUB_MEM_SIZE(bits).

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_rsa_init_pub_key.

mem may be same as s or m.