blowfish.c File Reference

#include "polarssl/config.h"
#include "polarssl/blowfish.h"
Include dependency graph for blowfish.c:

Go to the source code of this file.

Defines

#define GET_UINT32_BE(n, b, i)
#define PUT_UINT32_BE(n, b, i)

Functions

static uint32_t F (blowfish_context *ctx, uint32_t x)
static void blowfish_enc (blowfish_context *ctx, uint32_t *xl, uint32_t *xr)
static void blowfish_dec (blowfish_context *ctx, uint32_t *xl, uint32_t *xr)
int blowfish_setkey (blowfish_context *ctx, const unsigned char *key, unsigned int keysize)
 Blowfish key schedule.
int blowfish_crypt_ecb (blowfish_context *ctx, int mode, const unsigned char input[BLOWFISH_BLOCKSIZE], unsigned char output[BLOWFISH_BLOCKSIZE])
 Blowfish-ECB block encryption/decryption.
int blowfish_crypt_cbc (blowfish_context *ctx, int mode, size_t length, unsigned char iv[BLOWFISH_BLOCKSIZE], const unsigned char *input, unsigned char *output)
int blowfish_crypt_cfb64 (blowfish_context *ctx, int mode, size_t length, size_t *iv_off, unsigned char iv[BLOWFISH_BLOCKSIZE], const unsigned char *input, unsigned char *output)
int blowfish_crypt_ctr (blowfish_context *ctx, size_t length, size_t *nc_off, unsigned char nonce_counter[BLOWFISH_BLOCKSIZE], unsigned char stream_block[BLOWFISH_BLOCKSIZE], const unsigned char *input, unsigned char *output)

Variables

static const uint32_t P [BLOWFISH_ROUNDS+2]
static const uint32_t S [4][256]

Define Documentation

#define GET_UINT32_BE ( n,
b,
i   ) 
Value:
{                                                       \
    (n) = ( (uint32_t) (b)[(i)    ] << 24 )             \
        | ( (uint32_t) (b)[(i) + 1] << 16 )             \
        | ( (uint32_t) (b)[(i) + 2] <<  8 )             \
        | ( (uint32_t) (b)[(i) + 3]       );            \
}

Definition at line 44 of file blowfish.c.

Referenced by blowfish_crypt_ecb(), camellia_crypt_ecb(), camellia_setkey_enc(), des3_crypt_ecb(), des_crypt_ecb(), des_setkey(), gcm_gen_table(), sha1_process(), sha256_process(), xtea_crypt_ecb(), and xtea_setup().

#define PUT_UINT32_BE ( n,
b,
i   ) 
Value:
{                                                       \
    (b)[(i)    ] = (unsigned char) ( (n) >> 24 );       \
    (b)[(i) + 1] = (unsigned char) ( (n) >> 16 );       \
    (b)[(i) + 2] = (unsigned char) ( (n) >>  8 );       \
    (b)[(i) + 3] = (unsigned char) ( (n)       );       \
}

Definition at line 54 of file blowfish.c.

Referenced by blowfish_crypt_ecb(), camellia_crypt_ecb(), des3_crypt_ecb(), des_crypt_ecb(), gcm_finish(), gcm_mult(), gcm_starts(), sha1_finish(), sha256_finish(), and xtea_crypt_ecb().

Function Documentation

int blowfish_crypt_cbc ( blowfish_context *  ctx,
int  mode,
size_t  length,
unsigned char  iv[BLOWFISH_BLOCKSIZE],
const unsigned char *  input,
unsigned char *  output 
)

Definition at line 240 of file blowfish.c.

References blowfish_crypt_ecb(), BLOWFISH_DECRYPT, iv, and POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH.

Referenced by blowfish_crypt_cbc_wrap().

int blowfish_crypt_cfb64 ( blowfish_context *  ctx,
int  mode,
size_t  length,
size_t *  iv_off,
unsigned char  iv[BLOWFISH_BLOCKSIZE],
const unsigned char *  input,
unsigned char *  output 
)

Definition at line 294 of file blowfish.c.

References blowfish_crypt_ecb(), BLOWFISH_DECRYPT, BLOWFISH_ENCRYPT, and iv.

Referenced by blowfish_crypt_cfb64_wrap().

int blowfish_crypt_ctr ( blowfish_context *  ctx,
size_t  length,
size_t *  nc_off,
unsigned char  nonce_counter[BLOWFISH_BLOCKSIZE],
unsigned char  stream_block[BLOWFISH_BLOCKSIZE],
const unsigned char *  input,
unsigned char *  output 
)

Definition at line 342 of file blowfish.c.

References blowfish_crypt_ecb(), and BLOWFISH_ENCRYPT.

Referenced by blowfish_crypt_ctr_wrap().

int blowfish_crypt_ecb ( blowfish_context *  ctx,
int  mode,
const unsigned char  input[BLOWFISH_BLOCKSIZE],
unsigned char  output[BLOWFISH_BLOCKSIZE] 
)

Blowfish-ECB block encryption/decryption.

Parameters:
ctx Blowfish context
mode BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT
input 8-byte input block
output 8-byte output block
Returns:
0 if successful

Definition at line 211 of file blowfish.c.

References blowfish_dec(), BLOWFISH_DECRYPT, blowfish_enc(), GET_UINT32_BE, and PUT_UINT32_BE.

Referenced by blowfish_crypt_cbc(), blowfish_crypt_cfb64(), blowfish_crypt_ctr(), and blowfish_crypt_ecb_wrap().

static void blowfish_dec ( blowfish_context *  ctx,
uint32_t *  xl,
uint32_t *  xr 
) [static]

Definition at line 122 of file blowfish.c.

References BLOWFISH_ROUNDS, F, and blowfish_context::P.

Referenced by blowfish_crypt_ecb().

static void blowfish_enc ( blowfish_context *  ctx,
uint32_t *  xl,
uint32_t *  xr 
) [static]

Definition at line 93 of file blowfish.c.

References BLOWFISH_ROUNDS, F, and blowfish_context::P.

Referenced by blowfish_crypt_ecb(), and blowfish_setkey().

int blowfish_setkey ( blowfish_context *  ctx,
const unsigned char *  key,
unsigned int  keysize 
)

Blowfish key schedule.

Parameters:
ctx Blowfish context to be initialized
key encryption key
keysize must be between 32 and 448 bits
Returns:
0 if successful, or POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH

Definition at line 154 of file blowfish.c.

References blowfish_enc(), BLOWFISH_MAX_KEY, BLOWFISH_ROUNDS, P, blowfish_context::P, POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH, S, and blowfish_context::S.

Referenced by blowfish_setkey_wrap().

static uint32_t F ( blowfish_context *  ctx,
uint32_t  x 
) [static]

Definition at line 74 of file blowfish.c.

References F, and blowfish_context::S.

Variable Documentation

const uint32_t P[BLOWFISH_ROUNDS+2] [static]
Initial value:
 {
        0x243F6A88L, 0x85A308D3L, 0x13198A2EL, 0x03707344L,
        0xA4093822L, 0x299F31D0L, 0x082EFA98L, 0xEC4E6C89L,
        0x452821E6L, 0x38D01377L, 0xBE5466CFL, 0x34E90C6CL,
        0xC0AC29B7L, 0xC97C50DDL, 0x3F84D5B5L, 0xB5470917L,
        0x9216D5D9L, 0x8979FB1BL
}

Definition at line 63 of file blowfish.c.

static const uint32_t S [static]

Definition at line 72 of file blowfish.c.

Generated on 20 Jan 2015 for PolarSSL v1.3.2 by  doxygen 1.6.1