ocrypto_rsa_pkcs1_v15_check_padding()

int ocrypto_rsa_pkcs1_v15_check_padding	(	uint8_t *	m,
		size_t	m_len,
		const uint8_t *	em,
		size_t	em_len
	)

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

RSA PKCS1 V1.5 unpadding.

Parameters

[out]	m	The unpadded message. The buffer must be long enough to hold the message.
	m_len	Length of m.
	em	The padded message.
	em_len	Length of em.

Return values

-1	If decryption failed.
-2	If the output buffer is too short (m_len < length of message).
n	If a message of length n was successfully decrypted.