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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/blowfish.h')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/blowfish.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/blowfish.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/blowfish.h new file mode 100644 index 0000000..34626ee --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/mbedtls/include/mbedtls/blowfish.h @@ -0,0 +1,203 @@ +/** + * \file blowfish.h + * + * \brief Blowfish block cipher + * + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * This file is part of mbed TLS (https://tls.mbed.org) + */ +#ifndef MBEDTLS_BLOWFISH_H +#define MBEDTLS_BLOWFISH_H + +#if !defined(MBEDTLS_CONFIG_FILE) +#include "config.h" +#else +#include MBEDTLS_CONFIG_FILE +#endif + +#include <stddef.h> +#include <stdint.h> + +#define MBEDTLS_BLOWFISH_ENCRYPT 1 +#define MBEDTLS_BLOWFISH_DECRYPT 0 +#define MBEDTLS_BLOWFISH_MAX_KEY_BITS 448 +#define MBEDTLS_BLOWFISH_MIN_KEY_BITS 32 +#define MBEDTLS_BLOWFISH_ROUNDS 16 /**< Rounds to use. When increasing this value, make sure to extend the initialisation vectors */ +#define MBEDTLS_BLOWFISH_BLOCKSIZE 8 /* Blowfish uses 64 bit blocks */ + +#define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH -0x0016 /**< Invalid key length. */ +#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */ + +#if !defined(MBEDTLS_BLOWFISH_ALT) +// Regular implementation +// + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief Blowfish context structure + */ +typedef struct +{ + uint32_t P[MBEDTLS_BLOWFISH_ROUNDS + 2]; /*!< Blowfish round keys */ + uint32_t S[4][256]; /*!< key dependent S-boxes */ +} +mbedtls_blowfish_context; + +/** + * \brief Initialize Blowfish context + * + * \param ctx Blowfish context to be initialized + */ +void mbedtls_blowfish_init( mbedtls_blowfish_context *ctx ); + +/** + * \brief Clear Blowfish context + * + * \param ctx Blowfish context to be cleared + */ +void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx ); + +/** + * \brief Blowfish key schedule + * + * \param ctx Blowfish context to be initialized + * \param key encryption key + * \param keybits must be between 32 and 448 bits + * + * \return 0 if successful, or MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH + */ +int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key, + unsigned int keybits ); + +/** + * \brief Blowfish-ECB block encryption/decryption + * + * \param ctx Blowfish context + * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT + * \param input 8-byte input block + * \param output 8-byte output block + * + * \return 0 if successful + */ +int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx, + int mode, + const unsigned char input[MBEDTLS_BLOWFISH_BLOCKSIZE], + unsigned char output[MBEDTLS_BLOWFISH_BLOCKSIZE] ); + +#if defined(MBEDTLS_CIPHER_MODE_CBC) +/** + * \brief Blowfish-CBC buffer encryption/decryption + * Length should be a multiple of the block + * size (8 bytes) + * + * \note Upon exit, the content of the IV is updated so that you can + * call the function same function again on the following + * block(s) of data and get the same result as if it was + * encrypted in one call. This allows a "streaming" usage. + * If on the other hand you need to retain the contents of the + * IV, you should either save it manually or use the cipher + * module instead. + * + * \param ctx Blowfish context + * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_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 + * MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH + */ +int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx, + int mode, + size_t length, + unsigned char iv[MBEDTLS_BLOWFISH_BLOCKSIZE], + const unsigned char *input, + unsigned char *output ); +#endif /* MBEDTLS_CIPHER_MODE_CBC */ + +#if defined(MBEDTLS_CIPHER_MODE_CFB) +/** + * \brief Blowfish CFB buffer encryption/decryption. + * + * \note Upon exit, the content of the IV is updated so that you can + * call the function same function again on the following + * block(s) of data and get the same result as if it was + * encrypted in one call. This allows a "streaming" usage. + * If on the other hand you need to retain the contents of the + * IV, you should either save it manually or use the cipher + * module instead. + * + * \param ctx Blowfish context + * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_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 mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx, + int mode, + size_t length, + size_t *iv_off, + unsigned char iv[MBEDTLS_BLOWFISH_BLOCKSIZE], + const unsigned char *input, + unsigned char *output ); +#endif /*MBEDTLS_CIPHER_MODE_CFB */ + +#if defined(MBEDTLS_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 mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx, + size_t length, + size_t *nc_off, + unsigned char nonce_counter[MBEDTLS_BLOWFISH_BLOCKSIZE], + unsigned char stream_block[MBEDTLS_BLOWFISH_BLOCKSIZE], + const unsigned char *input, + unsigned char *output ); +#endif /* MBEDTLS_CIPHER_MODE_CTR */ + +#ifdef __cplusplus +} +#endif + +#else /* MBEDTLS_BLOWFISH_ALT */ +#include "blowfish_alt.h" +#endif /* MBEDTLS_BLOWFISH_ALT */ + +#endif /* blowfish.h */ |