#include "includes.h"
#include "common.h"
#include "tls/bignum.h"
#include "crypto.h"

Include dependency graph for crypto_internal-modexp.c:

Functions
int	crypto_mod_exp (const u8 base, size_t base_len, const u8 power, size_t power_len, const u8 modulus, size_t modulus_len, u8 result, size_t *result_len)

Function Documentation

int crypto_mod_exp	(	const u8 *	base,
		size_t	base_len,
		const u8 *	power,
		size_t	power_len,
		const u8 *	modulus,
		size_t	modulus_len,
		u8 *	result,
		size_t *	result_len
	)

crypto_mod_exp - Modular exponentiation of large integers : Base integer (big endian byte array) : Length of base integer in bytes : Power integer (big endian byte array) : Length of power integer in bytes : Modulus integer (big endian byte array) : Length of modulus integer in bytes

Returns:: : Buffer for the result : Result length (max buffer size on input, real len on output) Returns: 0 on success, -1 on failure

This function calculates result = base ^ power mod modulus. modules_len is used as the maximum size of modulus buffer. It is set to the used size on success.

This function is only used with internal TLSv1 implementation (CONFIG_TLS=internal). If that is not used, the crypto wrapper does not need to implement this.

Definition at line 22 of file crypto_internal-modexp.c.

Functions

Function Documentation