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Diffstat (limited to 'lib/mbedtls-2.27.0/include/mbedtls/blowfish.h')
| -rw-r--r-- | lib/mbedtls-2.27.0/include/mbedtls/blowfish.h | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/lib/mbedtls-2.27.0/include/mbedtls/blowfish.h b/lib/mbedtls-2.27.0/include/mbedtls/blowfish.h deleted file mode 100644 index c2a6ff9..0000000 --- a/lib/mbedtls-2.27.0/include/mbedtls/blowfish.h +++ /dev/null @@ -1,285 +0,0 @@ -/** - * \file blowfish.h - * - * \brief Blowfish block cipher - */ -/* - * Copyright The Mbed TLS Contributors - * 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. - */ -#ifndef MBEDTLS_BLOWFISH_H -#define MBEDTLS_BLOWFISH_H - -#if !defined(MBEDTLS_CONFIG_FILE) -#include "mbedtls/config.h" -#else -#include MBEDTLS_CONFIG_FILE -#endif - -#include <stddef.h> -#include <stdint.h> - -#include "mbedtls/platform_util.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 */ - -#if !defined(MBEDTLS_DEPRECATED_REMOVED) -#define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x0016 ) -#endif /* !MBEDTLS_DEPRECATED_REMOVED */ -#define MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA -0x0016 /**< Bad input data. */ - -#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */ - -/* MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED is deprecated and should not be used. - */ -#define MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED -0x0017 /**< Blowfish hardware accelerator failed. */ - -#ifdef __cplusplus -extern "C" { -#endif - -#if !defined(MBEDTLS_BLOWFISH_ALT) -// Regular implementation -// - -/** - * \brief Blowfish context structure - */ -typedef struct mbedtls_blowfish_context -{ - uint32_t P[MBEDTLS_BLOWFISH_ROUNDS + 2]; /*!< Blowfish round keys */ - uint32_t S[4][256]; /*!< key dependent S-boxes */ -} -mbedtls_blowfish_context; - -#else /* MBEDTLS_BLOWFISH_ALT */ -#include "blowfish_alt.h" -#endif /* MBEDTLS_BLOWFISH_ALT */ - -/** - * \brief Initialize a Blowfish context. - * - * \param ctx The Blowfish context to be initialized. - * This must not be \c NULL. - */ -void mbedtls_blowfish_init( mbedtls_blowfish_context *ctx ); - -/** - * \brief Clear a Blowfish context. - * - * \param ctx The Blowfish context to be cleared. - * This may be \c NULL, in which case this function - * returns immediately. If it is not \c NULL, it must - * point to an initialized Blowfish context. - */ -void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx ); - -/** - * \brief Perform a Blowfish key schedule operation. - * - * \param ctx The Blowfish context to perform the key schedule on. - * \param key The encryption key. This must be a readable buffer of - * length \p keybits Bits. - * \param keybits The length of \p key in Bits. This must be between - * \c 32 and \c 448 and a multiple of \c 8. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key, - unsigned int keybits ); - -/** - * \brief Perform a Blowfish-ECB block encryption/decryption operation. - * - * \param ctx The Blowfish context to use. This must be initialized - * and bound to a key. - * \param mode The mode of operation. Possible values are - * #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or - * #MBEDTLS_BLOWFISH_DECRYPT for decryption. - * \param input The input block. This must be a readable buffer - * of size \c 8 Bytes. - * \param output The output block. This must be a writable buffer - * of size \c 8 Bytes. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -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 Perform a Blowfish-CBC buffer encryption/decryption operation. - * - * \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 The Blowfish context to use. This must be initialized - * and bound to a key. - * \param mode The mode of operation. Possible values are - * #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or - * #MBEDTLS_BLOWFISH_DECRYPT for decryption. - * \param length The length of the input data in Bytes. This must be - * multiple of \c 8. - * \param iv The initialization vector. This must be a read/write buffer - * of length \c 8 Bytes. It is updated by this function. - * \param input The input data. This must be a readable buffer of length - * \p length Bytes. - * \param output The output data. This must be a writable buffer of length - * \p length Bytes. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -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 Perform a Blowfish CFB buffer encryption/decryption operation. - * - * \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 The Blowfish context to use. This must be initialized - * and bound to a key. - * \param mode The mode of operation. Possible values are - * #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or - * #MBEDTLS_BLOWFISH_DECRYPT for decryption. - * \param length The length of the input data in Bytes. - * \param iv_off The offset in the initialiation vector. - * The value pointed to must be smaller than \c 8 Bytes. - * It is updated by this function to support the aforementioned - * streaming usage. - * \param iv The initialization vector. This must be a read/write buffer - * of size \c 8 Bytes. It is updated after use. - * \param input The input data. This must be a readable buffer of length - * \p length Bytes. - * \param output The output data. This must be a writable buffer of length - * \p length Bytes. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -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 Perform a Blowfish-CTR buffer encryption/decryption operation. - * - * \warning You must never reuse a nonce value with the same key. Doing so - * would void the encryption for the two messages encrypted with - * the same nonce and key. - * - * There are two common strategies for managing nonces with CTR: - * - * 1. You can handle everything as a single message processed over - * successive calls to this function. In that case, you want to - * set \p nonce_counter and \p nc_off to 0 for the first call, and - * then preserve the values of \p nonce_counter, \p nc_off and \p - * stream_block across calls to this function as they will be - * updated by this function. - * - * With this strategy, you must not encrypt more than 2**64 - * blocks of data with the same key. - * - * 2. You can encrypt separate messages by dividing the \p - * nonce_counter buffer in two areas: the first one used for a - * per-message nonce, handled by yourself, and the second one - * updated by this function internally. - * - * For example, you might reserve the first 4 bytes for the - * per-message nonce, and the last 4 bytes for internal use. In that - * case, before calling this function on a new message you need to - * set the first 4 bytes of \p nonce_counter to your chosen nonce - * value, the last 4 to 0, and \p nc_off to 0 (which will cause \p - * stream_block to be ignored). That way, you can encrypt at most - * 2**32 messages of up to 2**32 blocks each with the same key. - * - * The per-message nonce (or information sufficient to reconstruct - * it) needs to be communicated with the ciphertext and must be unique. - * The recommended way to ensure uniqueness is to use a message - * counter. - * - * Note that for both stategies, sizes are measured in blocks and - * that a Blowfish block is 8 bytes. - * - * \warning Upon return, \p stream_block contains sensitive data. Its - * content must not be written to insecure storage and should be - * securely discarded as soon as it's no longer needed. - * - * \param ctx The Blowfish context to use. This must be initialized - * and bound to a key. - * \param length The length of the input data in Bytes. - * \param nc_off The offset in the current stream_block (for resuming - * within current cipher stream). The offset pointer - * should be \c 0 at the start of a stream and must be - * smaller than \c 8. It is updated by this function. - * \param nonce_counter The 64-bit nonce and counter. This must point to a - * read/write buffer of length \c 8 Bytes. - * \param stream_block The saved stream-block for resuming. This must point to - * a read/write buffer of length \c 8 Bytes. - * \param input The input data. This must be a readable buffer of - * length \p length Bytes. - * \param output The output data. This must be a writable buffer of - * length \p length Bytes. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -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 - -#endif /* blowfish.h */ |