cast.c File Reference

#include <openssl/cast.h>
#include <openssl/cipher.h>
#include <openssl/obj.h>
#include "../../crypto/internal.h"
#include "internal.h"
#include "../macros.h"

Include dependency graph for cast.c:

Go to the source code of this file.

Macros
#define	CAST_exp(l, A, a, n)
#define	E_CAST(n, key, L, R, OP1, OP2, OP3)
#define	S4   CAST_S_table4
#define	S5   CAST_S_table5
#define	S6   CAST_S_table6
#define	S7   CAST_S_table7

Functions
static int	cast_cbc_cipher (EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in, size_t len)
void	CAST_cbc_encrypt (const uint8_t *in, uint8_t *out, size_t length, const CAST_KEY *ks, uint8_t *iv, int enc)
void	CAST_cfb64_encrypt (const uint8_t *in, uint8_t *out, size_t length, const CAST_KEY *schedule, uint8_t *ivec, int *num, int enc)
void	CAST_decrypt (uint32_t *data, const CAST_KEY *key)
static int	cast_ecb_cipher (EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in, size_t len)
void	CAST_ecb_encrypt (const uint8_t *in, uint8_t *out, const CAST_KEY *ks, int enc)
void	CAST_encrypt (uint32_t *data, const CAST_KEY *key)
static int	cast_init_key (EVP_CIPHER_CTX *ctx, const uint8_t *key, const uint8_t *iv, int enc)
void	CAST_set_key (CAST_KEY *key, size_t len, const uint8_t *data)
const EVP_CIPHER *	EVP_cast5_cbc (void)
const EVP_CIPHER *	EVP_cast5_ecb (void)

Variables
static const EVP_CIPHER	cast5_cbc
static const EVP_CIPHER	cast5_ecb

Macro Definition Documentation

CAST_exp

#define CAST_exp	(		l,
			A,
			a,
			n
	)

Value:

  A[n / 4] = l;                \
  a[n + 3] = (l)&0xff;         \
  a[n + 2] = (l >> 8) & 0xff;  \
  a[n + 1] = (l >> 16) & 0xff; \
  a[n + 0] = (l >> 24) & 0xff;

Definition at line 239 of file cast.c.

E_CAST

#define E_CAST	(		n,
			key,
			L,
			R,
			OP1,
			OP2,
			OP3
	)

Value:

  {                                                                            \
    uint32_t a, b, c, d;                                                       \
    t = (key[n * 2] OP1 R) & 0xffffffff;                                       \
    t = CRYPTO_rotl_u32(t, (key[n * 2 + 1]));                                  \
    a = CAST_S_table0[(t >> 8) & 0xff];                                        \
    b = CAST_S_table1[(t)&0xff];                                               \
    c = CAST_S_table2[(t >> 24) & 0xff];                                       \
    d = CAST_S_table3[(t >> 16) & 0xff];                                       \
    L ^= (((((a OP2 b)&0xffffffffL)OP3 c) & 0xffffffffL) OP1 d) & 0xffffffffL; \
  }

Definition at line 87 of file cast.c.

S4

#define S4   CAST_S_table4

Definition at line 245 of file cast.c.

S5

#define S5   CAST_S_table5

Definition at line 246 of file cast.c.

S6

#define S6   CAST_S_table6

Definition at line 247 of file cast.c.

S7

#define S7   CAST_S_table7

Definition at line 248 of file cast.c.

Function Documentation

cast_cbc_cipher()

static int cast_cbc_cipher ( EVP_CIPHER_CTX *  ctx, uint8_t *  out, const uint8_t *  in, size_t  len  )

static

Definition at line 431 of file cast.c.

CAST_cbc_encrypt()

void CAST_cbc_encrypt	(	const uint8_t *	in,
		uint8_t *	out,
		size_t	length,
		const CAST_KEY *	ks,
		uint8_t *	iv,
		int	enc
	)

Definition at line 163 of file cast.c.

CAST_cfb64_encrypt()

void CAST_cfb64_encrypt	(	const uint8_t *	in,
		uint8_t *	out,
		size_t	length,
		const CAST_KEY *	schedule,
		uint8_t *	ivec,
		int *	num,
		int	enc
	)

Definition at line 353 of file cast.c.

CAST_decrypt()

void CAST_decrypt	(	uint32_t *	data,
		const CAST_KEY *	key
	)

Definition at line 131 of file cast.c.

cast_ecb_cipher()

static int cast_ecb_cipher ( EVP_CIPHER_CTX *  ctx, uint8_t *  out, const uint8_t *  in, size_t  len  )

static

Definition at line 416 of file cast.c.

CAST_ecb_encrypt()

void CAST_ecb_encrypt	(	const uint8_t *	in,
		uint8_t *	out,
		const CAST_KEY *	ks,
		int	enc
	)

Definition at line 72 of file cast.c.

CAST_encrypt()

void CAST_encrypt	(	uint32_t *	data,
		const CAST_KEY *	key
	)

Definition at line 99 of file cast.c.

cast_init_key()

static int cast_init_key ( EVP_CIPHER_CTX *  ctx, const uint8_t *  key, const uint8_t *  iv, int  enc  )

static

Definition at line 409 of file cast.c.

CAST_set_key()

void CAST_set_key	(	CAST_KEY *	key,
		size_t	len,
		const uint8_t *	data
	)

Definition at line 250 of file cast.c.

EVP_cast5_cbc()

const EVP_CIPHER* EVP_cast5_cbc

(

void

)

Definition at line 458 of file cast.c.

EVP_cast5_ecb()

const EVP_CIPHER* EVP_cast5_ecb

(

void

)

Definition at line 456 of file cast.c.

Variable Documentation

cast5_cbc

const EVP_CIPHER cast5_cbc

static

Initial value:

= {
    NID_cast5_cbc,       CAST_BLOCK,
    CAST_KEY_LENGTH,     CAST_BLOCK ,
    sizeof(CAST_KEY),    EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH,
    NULL , cast_init_key,
    cast_cbc_cipher,     NULL ,
    NULL ,
}

Definition at line 447 of file cast.c.

cast5_ecb

const EVP_CIPHER cast5_ecb

static

Initial value:

= {
    NID_cast5_ecb,       CAST_BLOCK,
    CAST_KEY_LENGTH,     CAST_BLOCK ,
    sizeof(CAST_KEY),    EVP_CIPH_ECB_MODE | EVP_CIPH_VARIABLE_LENGTH,
    NULL , cast_init_key,
    cast_ecb_cipher,     NULL ,
    NULL ,
}

Definition at line 438 of file cast.c.