PolarSSL v1.3.1
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Blowfish block cipher. More...
Go to the source code of this file.
Data Structures | |
struct | blowfish_context |
Blowfish context structure. More... | |
Macros | |
#define | BLOWFISH_ENCRYPT 1 |
#define | BLOWFISH_DECRYPT 0 |
#define | BLOWFISH_MAX_KEY 448 |
#define | BLOWFISH_MIN_KEY 32 |
#define | BLOWFISH_ROUNDS 16 /* when increasing this value, make sure to extend the initialisation vectors */ |
#define | BLOWFISH_BLOCKSIZE 8 /* Blowfish uses 64 bit blocks */ |
#define | POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH -0x0016 |
Invalid key length. | |
#define | POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 |
Invalid data input length. | |
Functions | |
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) |
Blowfish-CBC buffer encryption/decryption Length should be a multiple of the block size (8 bytes) | |
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) |
Blowfish CFB buffer encryption/decryption. | |
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) |
Blowfish-CTR buffer encryption/decryption. | |
Blowfish block cipher.
Copyright (C) 2012-2013, Brainspark B.V.
This file is part of PolarSSL (http://www.polarssl.org) Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
All rights reserved.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Definition in file blowfish.h.
#define BLOWFISH_BLOCKSIZE 8 /* Blowfish uses 64 bit blocks */ |
Definition at line 46 of file blowfish.h.
#define BLOWFISH_DECRYPT 0 |
Definition at line 42 of file blowfish.h.
#define BLOWFISH_ENCRYPT 1 |
Definition at line 41 of file blowfish.h.
#define BLOWFISH_MAX_KEY 448 |
Definition at line 43 of file blowfish.h.
#define BLOWFISH_MIN_KEY 32 |
Definition at line 44 of file blowfish.h.
#define BLOWFISH_ROUNDS 16 /* when increasing this value, make sure to extend the initialisation vectors */ |
Definition at line 45 of file blowfish.h.
#define POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 |
Invalid data input length.
Definition at line 49 of file blowfish.h.
#define POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH -0x0016 |
Invalid key length.
Definition at line 48 of file blowfish.h.
int blowfish_crypt_cbc | ( | blowfish_context * | ctx, |
int | mode, | ||
size_t | length, | ||
unsigned char | iv[BLOWFISH_BLOCKSIZE], | ||
const unsigned char * | input, | ||
unsigned char * | output | ||
) |
Blowfish-CBC buffer encryption/decryption Length should be a multiple of the block size (8 bytes)
ctx | Blowfish context |
mode | BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT |
length | length of the input data |
iv | initialization vector (updated after use) |
input | buffer holding the input data |
output | buffer holding the output data |
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 | ||
) |
Blowfish CFB buffer encryption/decryption.
ctx | Blowfish context |
mode | BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT |
length | length of the input data |
iv_off | offset in IV (updated after use) |
iv | initialization vector (updated after use) |
input | buffer holding the input data |
output | buffer holding the output data |
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 | ||
) |
Blowfish-CTR buffer encryption/decryption.
Warning: You have to keep the maximum use of your counter in mind!
ctx | Blowfish context |
length | The length of the data |
nc_off | The offset in the current stream_block (for resuming within current cipher stream). The offset pointer to should be 0 at the start of a stream. |
nonce_counter | The 64-bit nonce and counter. |
stream_block | The saved stream-block for resuming. Is overwritten by the function. |
input | The input data stream |
output | The output data stream |
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.
ctx | Blowfish context |
mode | BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT |
input | 8-byte input block |
output | 8-byte output block |
int blowfish_setkey | ( | blowfish_context * | ctx, |
const unsigned char * | key, | ||
unsigned int | keysize | ||
) |
Blowfish key schedule.
ctx | Blowfish context to be initialized |
key | encryption key |
keysize | must be between 32 and 448 bits |