ocrypto_rsa_pkcs1_v15_encrypt()

int ocrypto_rsa_pkcs1_v15_encrypt	(	uint8_t *	c,
		size_t	c_len,
		const uint8_t *	m,
		size_t	m_len,
		const uint8_t *	seed,
		size_t	s_len,
		const ocrypto_rsa_pub_key *	pk,
		uint32_t *	mem
	)

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

RSA PKCS1 V1.5 encryption.

The message m is encrypted to a ciphertext returned in c.

Parameters

[out]	c	The generated ciphertext.
	c_len	Length of c.
	m	The message to be encrypted.
	m_len	Length of m. 0 <= m_len <= key-size - 11.
	seed	The random seed to be used for the padding.
	s_len	Length of seed. s_len >= key-size - 3 - m_len
	pk	A valid RSA public key.
	mem	The working memory. Length OCRYPTO_RSA_PUB_MEM_SIZE(bits).

Return values

-1	If the message is too long (m_len > key-size - 11).
-2	If the seed is too short (s_len < key-size - 3 - m_len).
0	On success.

Remarks

The key pk should be initialized with ocrypto_rsa_init_pub_key.

The seed should consist of non-zero random bytes.

c may be same as m or mem.