/usr/include/polarssl/blowfish.h is in libpolarssl-dev 1.3.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | /**
* \file blowfish.h
*
* \brief 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.
*/
#ifndef POLARSSL_BLOWFISH_H
#define POLARSSL_BLOWFISH_H
#include "config.h"
#include <string.h>
#if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
#include <basetsd.h>
typedef UINT32 uint32_t;
#else
#include <inttypes.h>
#endif
#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. */
#if !defined(POLARSSL_BLOWFISH_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Blowfish context structure
*/
typedef struct
{
uint32_t P[BLOWFISH_ROUNDS + 2]; /*!< Blowfish round keys */
uint32_t S[4][256]; /*!< key dependent S-boxes */
}
blowfish_context;
/**
* \brief Blowfish key schedule
*
* \param ctx Blowfish context to be initialized
* \param key encryption key
* \param keysize must be between 32 and 448 bits
*
* \return 0 if successful, or POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH
*/
int blowfish_setkey( blowfish_context *ctx, const unsigned char *key, unsigned int keysize );
/**
* \brief Blowfish-ECB block encryption/decryption
*
* \param ctx Blowfish context
* \param mode BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT
* \param input 8-byte input block
* \param output 8-byte output block
*
* \return 0 if successful
*/
int blowfish_crypt_ecb( blowfish_context *ctx,
int mode,
const unsigned char input[BLOWFISH_BLOCKSIZE],
unsigned char output[BLOWFISH_BLOCKSIZE] );
#if defined(POLARSSL_CIPHER_MODE_CBC)
/**
* \brief Blowfish-CBC buffer encryption/decryption
* Length should be a multiple of the block
* size (8 bytes)
*
* \param ctx Blowfish context
* \param mode BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT
* \param length length of the input data
* \param iv initialization vector (updated after use)
* \param input buffer holding the input data
* \param output buffer holding the output data
*
* \return 0 if successful, or POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH
*/
int blowfish_crypt_cbc( blowfish_context *ctx,
int mode,
size_t length,
unsigned char iv[BLOWFISH_BLOCKSIZE],
const unsigned char *input,
unsigned char *output );
#endif /* POLARSSL_CIPHER_MODE_CBC */
#if defined(POLARSSL_CIPHER_MODE_CFB)
/**
* \brief Blowfish CFB buffer encryption/decryption.
*
* \param ctx Blowfish context
* \param mode BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT
* \param length length of the input data
* \param iv_off offset in IV (updated after use)
* \param iv initialization vector (updated after use)
* \param input buffer holding the input data
* \param output buffer holding the output data
*
* \return 0 if successful
*/
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 );
#endif /*POLARSSL_CIPHER_MODE_CFB */
#if defined(POLARSSL_CIPHER_MODE_CTR)
/**
* \brief Blowfish-CTR buffer encryption/decryption
*
* Warning: You have to keep the maximum use of your counter in mind!
*
* \param ctx Blowfish context
* \param length The length of the data
* \param 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.
* \param nonce_counter The 64-bit nonce and counter.
* \param stream_block The saved stream-block for resuming. Is overwritten
* by the function.
* \param input The input data stream
* \param output The output data stream
*
* \return 0 if successful
*/
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 );
#endif /* POLARSSL_CIPHER_MODE_CTR */
#ifdef __cplusplus
}
#endif
#else /* POLARSSL_BLOWFISH_ALT */
#include "blowfish_alt.h"
#endif /* POLARSSL_BLOWFISH_ALT */
#endif /* blowfish.h */
|