des.h File Reference

DES block cipher. More...

#include "mbedtls/config.h"
#include <stddef.h>
#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	mbedtls_des_context
	DES context structure. More...
struct	mbedtls_des3_context
	Triple-DES context structure. More...

Macros
#define	MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH   -0x0032
	The data input has an invalid length.
#define	MBEDTLS_ERR_DES_HW_ACCEL_FAILED   -0x0033
	DES hardware accelerator failed.

Typedefs
typedef struct mbedtls_des_context	mbedtls_des_context
	DES context structure.
typedef struct mbedtls_des3_context	mbedtls_des3_context
	Triple-DES context structure.

Functions
void	mbedtls_des_init (mbedtls_des_context *ctx)
	Initialize DES context.
void	mbedtls_des_free (mbedtls_des_context *ctx)
	Clear DES context.
void	mbedtls_des3_init (mbedtls_des3_context *ctx)
	Initialize Triple-DES context.
void	mbedtls_des3_free (mbedtls_des3_context *ctx)
	Clear Triple-DES context.
void	mbedtls_des_key_set_parity (unsigned char key[8])
	Set key parity on the given key to odd.
int	mbedtls_des_key_check_key_parity (const unsigned char key[8])
	Check that key parity on the given key is odd.
int	mbedtls_des_key_check_weak (const unsigned char key[8])
	Check that key is not a weak or semi-weak DES key.
int	mbedtls_des_setkey_enc (mbedtls_des_context *ctx, const unsigned char key[8])
	DES key schedule (56-bit, encryption)
int	mbedtls_des_setkey_dec (mbedtls_des_context *ctx, const unsigned char key[8])
	DES key schedule (56-bit, decryption)
int	mbedtls_des3_set2key_enc (mbedtls_des3_context *ctx, const unsigned char key[8 *2])
	Triple-DES key schedule (112-bit, encryption)
int	mbedtls_des3_set2key_dec (mbedtls_des3_context *ctx, const unsigned char key[8 *2])
	Triple-DES key schedule (112-bit, decryption)
int	mbedtls_des3_set3key_enc (mbedtls_des3_context *ctx, const unsigned char key[8 *3])
	Triple-DES key schedule (168-bit, encryption)
int	mbedtls_des3_set3key_dec (mbedtls_des3_context *ctx, const unsigned char key[8 *3])
	Triple-DES key schedule (168-bit, decryption)
int	mbedtls_des_crypt_ecb (mbedtls_des_context *ctx, const unsigned char input[8], unsigned char output[8])
	DES-ECB block encryption/decryption.
int	mbedtls_des3_crypt_ecb (mbedtls_des3_context *ctx, const unsigned char input[8], unsigned char output[8])
	3DES-ECB block encryption/decryption
void	mbedtls_des_setkey (uint32_t SK[32], const unsigned char key[8])
	Internal function for key expansion.

Detailed Description

DES block cipher.

Warning

DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead.

Definition in file mbedtls/include/mbedtls/des.h.