ocrypto_rsa2048_pkcs1_v15_encrypt()

int ocrypto_rsa2048_pkcs1_v15_encrypt	(	uint8_t	c[256],
		const uint8_t *	m,
		size_t	mlen,
		const uint8_t *	seed,
		size_t	slen,
		const ocrypto_rsa2048_pub_key *	pk )

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

2048-bit RSA PKCS1 V1.5 encryption.

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

Parameters

[out]	c	The generated 256-byte ciphertext.
	m	The message to be encrypted.
	mlen	Length of m. 0 <= mlen <= 245.
	seed	The random seed to be used for the padding.
	slen	Length of seed. slen >= 253 - mlen.
	pk	A valid 2048-bit RSA public key.

Return values

-1	If the message is too long (mlen > 245).
-2	If the seed is too short (slen < 253 - mlen).
0	On success.

Remarks

The key pk should be initialized with ocrypto_rsa2048_init_pub_key.

The seed should consist of non-zero random bytes.

c may be same as m.