ocrypto_rsa1024_pkcs1_v15_encrypt()

int ocrypto_rsa1024_pkcs1_v15_encrypt	(	uint8_t	c[128],
		const uint8_t *	m,
		size_t	m_len,
		const uint8_t *	seed,
		size_t	s_len,
		const ocrypto_rsa1024_pub_key *	pk )

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

1024 bit RSA PKCS1 V1.5 encryption.

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

Parameters

[out]	c	The generated 128-byte ciphertext.
	m	The message to be encrypted.
	m_len	Length of m. 0 <= m_len <= 117.
	seed	The random seed to be used for the padding.
	s_len	Length of seed. s_len >= 125 - m_len
	pk	A valid 1024-bit RSA public key.

Return values

-1	If the message is too long (m_len > 117).
-2	If the seed is too short (s_len < 125 - m_len).
0	On success.

Remarks

The key pk should be initialized with ocrypto_rsa1024_init_pub_key.

The seed should consist of non-zero random bytes.

c may be same as m.