rsa.c File Reference

RSA. More...

#include "includes.h"
#include "common.h"
#include "asn1.h"
#include "bignum.h"
#include "rsa.h"

Data Structures
struct	crypto_rsa_key

Functions
struct crypto_rsa_key *	crypto_rsa_import_public_key (const u8 *buf, size_t len)
	Import an RSA public key. More...
struct crypto_rsa_key *	crypto_rsa_import_public_key_parts (const u8 *n, size_t n_len, const u8 *e, size_t e_len)
struct crypto_rsa_key *	crypto_rsa_import_private_key (const u8 *buf, size_t len)
	Import an RSA private key. More...
size_t	crypto_rsa_get_modulus_len (struct crypto_rsa_key *key)
	Get the modulus length of the RSA key. More...
int	crypto_rsa_exptmod (const u8 *in, size_t inlen, u8 *out, size_t *outlen, struct crypto_rsa_key *key, int use_private)
	RSA modular exponentiation. More...
void	crypto_rsa_free (struct crypto_rsa_key *key)
	Free RSA key. More...

Detailed Description

RSA.

Function Documentation

int crypto_rsa_exptmod	(	const u8 *	in,
		size_t	inlen,
		u8 *	out,
		size_t *	outlen,
		struct crypto_rsa_key *	key,
		int	use_private
	)

RSA modular exponentiation.

Parameters

in	Input data
inlen	Input data length
out	Buffer for output data
outlen	Maximum size of the output buffer and used size on success
key	RSA key
use_private	1 = Use RSA private key, 0 = Use RSA public key

Returns

0 on success, -1 on failure

void crypto_rsa_free

(

struct crypto_rsa_key *

key

)

Free RSA key.

Parameters

key	RSA key to be freed

This function frees an RSA key imported with either crypto_rsa_import_public_key() or crypto_rsa_import_private_key().

size_t crypto_rsa_get_modulus_len

(

struct crypto_rsa_key *

key

)

Get the modulus length of the RSA key.

Parameters

key

RSA key

Returns

Modulus length of the key

struct crypto_rsa_key* crypto_rsa_import_private_key	(	const u8 *	buf,
		size_t	len
	)

Import an RSA private key.

Parameters

buf	Key buffer (DER encoded RSA private key)
len	Key buffer length in bytes

Returns

Pointer to the private key or NULL on failure

struct crypto_rsa_key* crypto_rsa_import_public_key	(	const u8 *	buf,
		size_t	len
	)

Import an RSA public key.

Parameters

buf	Key buffer (DER encoded RSA public key)
len	Key buffer length in bytes

Returns

Pointer to the public key or NULL on failure