Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbedtls/mbedtls/blowfish.h@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

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mbedAustin 11:cada08fc8a70 1 /**
mbedAustin 11:cada08fc8a70 2 * \file blowfish.h
mbedAustin 11:cada08fc8a70 3 *
mbedAustin 11:cada08fc8a70 4 * \brief Blowfish block cipher
mbedAustin 11:cada08fc8a70 5 *
mbedAustin 11:cada08fc8a70 6 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
mbedAustin 11:cada08fc8a70 7 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 8 *
mbedAustin 11:cada08fc8a70 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may
mbedAustin 11:cada08fc8a70 10 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 11 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 12 *
mbedAustin 11:cada08fc8a70 13 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 14 *
mbedAustin 11:cada08fc8a70 15 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 18 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 19 * limitations under the License.
mbedAustin 11:cada08fc8a70 20 *
mbedAustin 11:cada08fc8a70 21 * This file is part of mbed TLS (https://tls.mbed.org)
mbedAustin 11:cada08fc8a70 22 */
mbedAustin 11:cada08fc8a70 23 #ifndef MBEDTLS_BLOWFISH_H
mbedAustin 11:cada08fc8a70 24 #define MBEDTLS_BLOWFISH_H
mbedAustin 11:cada08fc8a70 25
mbedAustin 11:cada08fc8a70 26 #if !defined(MBEDTLS_CONFIG_FILE)
mbedAustin 11:cada08fc8a70 27 #include "config.h"
mbedAustin 11:cada08fc8a70 28 #else
mbedAustin 11:cada08fc8a70 29 #include MBEDTLS_CONFIG_FILE
mbedAustin 11:cada08fc8a70 30 #endif
mbedAustin 11:cada08fc8a70 31
mbedAustin 11:cada08fc8a70 32 #include <stddef.h>
mbedAustin 11:cada08fc8a70 33 #include <stdint.h>
mbedAustin 11:cada08fc8a70 34
mbedAustin 11:cada08fc8a70 35 #define MBEDTLS_BLOWFISH_ENCRYPT 1
mbedAustin 11:cada08fc8a70 36 #define MBEDTLS_BLOWFISH_DECRYPT 0
mbedAustin 11:cada08fc8a70 37 #define MBEDTLS_BLOWFISH_MAX_KEY_BITS 448
mbedAustin 11:cada08fc8a70 38 #define MBEDTLS_BLOWFISH_MIN_KEY_BITS 32
mbedAustin 11:cada08fc8a70 39 #define MBEDTLS_BLOWFISH_ROUNDS 16 /**< Rounds to use. When increasing this value, make sure to extend the initialisation vectors */
mbedAustin 11:cada08fc8a70 40 #define MBEDTLS_BLOWFISH_BLOCKSIZE 8 /* Blowfish uses 64 bit blocks */
mbedAustin 11:cada08fc8a70 41
mbedAustin 11:cada08fc8a70 42 #define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH -0x0016 /**< Invalid key length. */
mbedAustin 11:cada08fc8a70 43 #define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */
mbedAustin 11:cada08fc8a70 44
mbedAustin 11:cada08fc8a70 45 #if !defined(MBEDTLS_BLOWFISH_ALT)
mbedAustin 11:cada08fc8a70 46 // Regular implementation
mbedAustin 11:cada08fc8a70 47 //
mbedAustin 11:cada08fc8a70 48
mbedAustin 11:cada08fc8a70 49 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 50 extern "C" {
mbedAustin 11:cada08fc8a70 51 #endif
mbedAustin 11:cada08fc8a70 52
mbedAustin 11:cada08fc8a70 53 /**
mbedAustin 11:cada08fc8a70 54 * \brief Blowfish context structure
mbedAustin 11:cada08fc8a70 55 */
mbedAustin 11:cada08fc8a70 56 typedef struct
mbedAustin 11:cada08fc8a70 57 {
mbedAustin 11:cada08fc8a70 58 uint32_t P[MBEDTLS_BLOWFISH_ROUNDS + 2]; /*!< Blowfish round keys */
mbedAustin 11:cada08fc8a70 59 uint32_t S[4][256]; /*!< key dependent S-boxes */
mbedAustin 11:cada08fc8a70 60 }
mbedAustin 11:cada08fc8a70 61 mbedtls_blowfish_context;
mbedAustin 11:cada08fc8a70 62
mbedAustin 11:cada08fc8a70 63 /**
mbedAustin 11:cada08fc8a70 64 * \brief Initialize Blowfish context
mbedAustin 11:cada08fc8a70 65 *
mbedAustin 11:cada08fc8a70 66 * \param ctx Blowfish context to be initialized
mbedAustin 11:cada08fc8a70 67 */
mbedAustin 11:cada08fc8a70 68 void mbedtls_blowfish_init( mbedtls_blowfish_context *ctx );
mbedAustin 11:cada08fc8a70 69
mbedAustin 11:cada08fc8a70 70 /**
mbedAustin 11:cada08fc8a70 71 * \brief Clear Blowfish context
mbedAustin 11:cada08fc8a70 72 *
mbedAustin 11:cada08fc8a70 73 * \param ctx Blowfish context to be cleared
mbedAustin 11:cada08fc8a70 74 */
mbedAustin 11:cada08fc8a70 75 void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx );
mbedAustin 11:cada08fc8a70 76
mbedAustin 11:cada08fc8a70 77 /**
mbedAustin 11:cada08fc8a70 78 * \brief Blowfish key schedule
mbedAustin 11:cada08fc8a70 79 *
mbedAustin 11:cada08fc8a70 80 * \param ctx Blowfish context to be initialized
mbedAustin 11:cada08fc8a70 81 * \param key encryption key
mbedAustin 11:cada08fc8a70 82 * \param keybits must be between 32 and 448 bits
mbedAustin 11:cada08fc8a70 83 *
mbedAustin 11:cada08fc8a70 84 * \return 0 if successful, or MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH
mbedAustin 11:cada08fc8a70 85 */
mbedAustin 11:cada08fc8a70 86 int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key,
mbedAustin 11:cada08fc8a70 87 unsigned int keybits );
mbedAustin 11:cada08fc8a70 88
mbedAustin 11:cada08fc8a70 89 /**
mbedAustin 11:cada08fc8a70 90 * \brief Blowfish-ECB block encryption/decryption
mbedAustin 11:cada08fc8a70 91 *
mbedAustin 11:cada08fc8a70 92 * \param ctx Blowfish context
mbedAustin 11:cada08fc8a70 93 * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT
mbedAustin 11:cada08fc8a70 94 * \param input 8-byte input block
mbedAustin 11:cada08fc8a70 95 * \param output 8-byte output block
mbedAustin 11:cada08fc8a70 96 *
mbedAustin 11:cada08fc8a70 97 * \return 0 if successful
mbedAustin 11:cada08fc8a70 98 */
mbedAustin 11:cada08fc8a70 99 int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx,
mbedAustin 11:cada08fc8a70 100 int mode,
mbedAustin 11:cada08fc8a70 101 const unsigned char input[MBEDTLS_BLOWFISH_BLOCKSIZE],
mbedAustin 11:cada08fc8a70 102 unsigned char output[MBEDTLS_BLOWFISH_BLOCKSIZE] );
mbedAustin 11:cada08fc8a70 103
mbedAustin 11:cada08fc8a70 104 #if defined(MBEDTLS_CIPHER_MODE_CBC)
mbedAustin 11:cada08fc8a70 105 /**
mbedAustin 11:cada08fc8a70 106 * \brief Blowfish-CBC buffer encryption/decryption
mbedAustin 11:cada08fc8a70 107 * Length should be a multiple of the block
mbedAustin 11:cada08fc8a70 108 * size (8 bytes)
mbedAustin 11:cada08fc8a70 109 *
mbedAustin 11:cada08fc8a70 110 * \note Upon exit, the content of the IV is updated so that you can
mbedAustin 11:cada08fc8a70 111 * call the function same function again on the following
mbedAustin 11:cada08fc8a70 112 * block(s) of data and get the same result as if it was
mbedAustin 11:cada08fc8a70 113 * encrypted in one call. This allows a "streaming" usage.
mbedAustin 11:cada08fc8a70 114 * If on the other hand you need to retain the contents of the
mbedAustin 11:cada08fc8a70 115 * IV, you should either save it manually or use the cipher
mbedAustin 11:cada08fc8a70 116 * module instead.
mbedAustin 11:cada08fc8a70 117 *
mbedAustin 11:cada08fc8a70 118 * \param ctx Blowfish context
mbedAustin 11:cada08fc8a70 119 * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT
mbedAustin 11:cada08fc8a70 120 * \param length length of the input data
mbedAustin 11:cada08fc8a70 121 * \param iv initialization vector (updated after use)
mbedAustin 11:cada08fc8a70 122 * \param input buffer holding the input data
mbedAustin 11:cada08fc8a70 123 * \param output buffer holding the output data
mbedAustin 11:cada08fc8a70 124 *
mbedAustin 11:cada08fc8a70 125 * \return 0 if successful, or
mbedAustin 11:cada08fc8a70 126 * MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH
mbedAustin 11:cada08fc8a70 127 */
mbedAustin 11:cada08fc8a70 128 int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx,
mbedAustin 11:cada08fc8a70 129 int mode,
mbedAustin 11:cada08fc8a70 130 size_t length,
mbedAustin 11:cada08fc8a70 131 unsigned char iv[MBEDTLS_BLOWFISH_BLOCKSIZE],
mbedAustin 11:cada08fc8a70 132 const unsigned char *input,
mbedAustin 11:cada08fc8a70 133 unsigned char *output );
mbedAustin 11:cada08fc8a70 134 #endif /* MBEDTLS_CIPHER_MODE_CBC */
mbedAustin 11:cada08fc8a70 135
mbedAustin 11:cada08fc8a70 136 #if defined(MBEDTLS_CIPHER_MODE_CFB)
mbedAustin 11:cada08fc8a70 137 /**
mbedAustin 11:cada08fc8a70 138 * \brief Blowfish CFB buffer encryption/decryption.
mbedAustin 11:cada08fc8a70 139 *
mbedAustin 11:cada08fc8a70 140 * \note Upon exit, the content of the IV is updated so that you can
mbedAustin 11:cada08fc8a70 141 * call the function same function again on the following
mbedAustin 11:cada08fc8a70 142 * block(s) of data and get the same result as if it was
mbedAustin 11:cada08fc8a70 143 * encrypted in one call. This allows a "streaming" usage.
mbedAustin 11:cada08fc8a70 144 * If on the other hand you need to retain the contents of the
mbedAustin 11:cada08fc8a70 145 * IV, you should either save it manually or use the cipher
mbedAustin 11:cada08fc8a70 146 * module instead.
mbedAustin 11:cada08fc8a70 147 *
mbedAustin 11:cada08fc8a70 148 * \param ctx Blowfish context
mbedAustin 11:cada08fc8a70 149 * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT
mbedAustin 11:cada08fc8a70 150 * \param length length of the input data
mbedAustin 11:cada08fc8a70 151 * \param iv_off offset in IV (updated after use)
mbedAustin 11:cada08fc8a70 152 * \param iv initialization vector (updated after use)
mbedAustin 11:cada08fc8a70 153 * \param input buffer holding the input data
mbedAustin 11:cada08fc8a70 154 * \param output buffer holding the output data
mbedAustin 11:cada08fc8a70 155 *
mbedAustin 11:cada08fc8a70 156 * \return 0 if successful
mbedAustin 11:cada08fc8a70 157 */
mbedAustin 11:cada08fc8a70 158 int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx,
mbedAustin 11:cada08fc8a70 159 int mode,
mbedAustin 11:cada08fc8a70 160 size_t length,
mbedAustin 11:cada08fc8a70 161 size_t *iv_off,
mbedAustin 11:cada08fc8a70 162 unsigned char iv[MBEDTLS_BLOWFISH_BLOCKSIZE],
mbedAustin 11:cada08fc8a70 163 const unsigned char *input,
mbedAustin 11:cada08fc8a70 164 unsigned char *output );
mbedAustin 11:cada08fc8a70 165 #endif /*MBEDTLS_CIPHER_MODE_CFB */
mbedAustin 11:cada08fc8a70 166
mbedAustin 11:cada08fc8a70 167 #if defined(MBEDTLS_CIPHER_MODE_CTR)
mbedAustin 11:cada08fc8a70 168 /**
mbedAustin 11:cada08fc8a70 169 * \brief Blowfish-CTR buffer encryption/decryption
mbedAustin 11:cada08fc8a70 170 *
mbedAustin 11:cada08fc8a70 171 * Warning: You have to keep the maximum use of your counter in mind!
mbedAustin 11:cada08fc8a70 172 *
mbedAustin 11:cada08fc8a70 173 * \param ctx Blowfish context
mbedAustin 11:cada08fc8a70 174 * \param length The length of the data
mbedAustin 11:cada08fc8a70 175 * \param nc_off The offset in the current stream_block (for resuming
mbedAustin 11:cada08fc8a70 176 * within current cipher stream). The offset pointer to
mbedAustin 11:cada08fc8a70 177 * should be 0 at the start of a stream.
mbedAustin 11:cada08fc8a70 178 * \param nonce_counter The 64-bit nonce and counter.
mbedAustin 11:cada08fc8a70 179 * \param stream_block The saved stream-block for resuming. Is overwritten
mbedAustin 11:cada08fc8a70 180 * by the function.
mbedAustin 11:cada08fc8a70 181 * \param input The input data stream
mbedAustin 11:cada08fc8a70 182 * \param output The output data stream
mbedAustin 11:cada08fc8a70 183 *
mbedAustin 11:cada08fc8a70 184 * \return 0 if successful
mbedAustin 11:cada08fc8a70 185 */
mbedAustin 11:cada08fc8a70 186 int mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx,
mbedAustin 11:cada08fc8a70 187 size_t length,
mbedAustin 11:cada08fc8a70 188 size_t *nc_off,
mbedAustin 11:cada08fc8a70 189 unsigned char nonce_counter[MBEDTLS_BLOWFISH_BLOCKSIZE],
mbedAustin 11:cada08fc8a70 190 unsigned char stream_block[MBEDTLS_BLOWFISH_BLOCKSIZE],
mbedAustin 11:cada08fc8a70 191 const unsigned char *input,
mbedAustin 11:cada08fc8a70 192 unsigned char *output );
mbedAustin 11:cada08fc8a70 193 #endif /* MBEDTLS_CIPHER_MODE_CTR */
mbedAustin 11:cada08fc8a70 194
mbedAustin 11:cada08fc8a70 195 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 196 }
mbedAustin 11:cada08fc8a70 197 #endif
mbedAustin 11:cada08fc8a70 198
mbedAustin 11:cada08fc8a70 199 #else /* MBEDTLS_BLOWFISH_ALT */
mbedAustin 11:cada08fc8a70 200 #include "blowfish_alt.h"
mbedAustin 11:cada08fc8a70 201 #endif /* MBEDTLS_BLOWFISH_ALT */
mbedAustin 11:cada08fc8a70 202
mbedAustin 11:cada08fc8a70 203 #endif /* blowfish.h */