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Diffstat (limited to 'include/mbedtls/camellia.h')
| -rw-r--r-- | include/mbedtls/camellia.h | 303 |
1 files changed, 0 insertions, 303 deletions
diff --git a/include/mbedtls/camellia.h b/include/mbedtls/camellia.h deleted file mode 100644 index 6c674fe..0000000 --- a/include/mbedtls/camellia.h +++ /dev/null @@ -1,303 +0,0 @@ -/** - * \file camellia.h - * - * \brief Camellia block cipher - */ -/* - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - */ -#ifndef MBEDTLS_CAMELLIA_H -#define MBEDTLS_CAMELLIA_H -#include "mbedtls/private_access.h" - -#include "mbedtls/build_info.h" - -#include <stddef.h> -#include <stdint.h> - -#include "mbedtls/platform_util.h" - -#define MBEDTLS_CAMELLIA_ENCRYPT 1 -#define MBEDTLS_CAMELLIA_DECRYPT 0 - -/** Bad input data. */ -#define MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA -0x0024 - -/** Invalid data input length. */ -#define MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH -0x0026 - -#ifdef __cplusplus -extern "C" { -#endif - -#if !defined(MBEDTLS_CAMELLIA_ALT) -// Regular implementation -// - -/** - * \brief CAMELLIA context structure - */ -typedef struct mbedtls_camellia_context { - int MBEDTLS_PRIVATE(nr); /*!< number of rounds */ - uint32_t MBEDTLS_PRIVATE(rk)[68]; /*!< CAMELLIA round keys */ -} -mbedtls_camellia_context; - -#else /* MBEDTLS_CAMELLIA_ALT */ -#include "camellia_alt.h" -#endif /* MBEDTLS_CAMELLIA_ALT */ - -/** - * \brief Initialize a CAMELLIA context. - * - * \param ctx The CAMELLIA context to be initialized. - * This must not be \c NULL. - */ -void mbedtls_camellia_init(mbedtls_camellia_context *ctx); - -/** - * \brief Clear a CAMELLIA context. - * - * \param ctx The CAMELLIA context to be cleared. This may be \c NULL, - * in which case this function returns immediately. If it is not - * \c NULL, it must be initialized. - */ -void mbedtls_camellia_free(mbedtls_camellia_context *ctx); - -/** - * \brief Perform a CAMELLIA key schedule operation for encryption. - * - * \param ctx The CAMELLIA context to use. This must be initialized. - * \param key The encryption key to use. This must be a readable buffer - * of size \p keybits Bits. - * \param keybits The length of \p key in Bits. This must be either \c 128, - * \c 192 or \c 256. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_camellia_setkey_enc(mbedtls_camellia_context *ctx, - const unsigned char *key, - unsigned int keybits); - -/** - * \brief Perform a CAMELLIA key schedule operation for decryption. - * - * \param ctx The CAMELLIA context to use. This must be initialized. - * \param key The decryption key. This must be a readable buffer - * of size \p keybits Bits. - * \param keybits The length of \p key in Bits. This must be either \c 128, - * \c 192 or \c 256. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_camellia_setkey_dec(mbedtls_camellia_context *ctx, - const unsigned char *key, - unsigned int keybits); - -/** - * \brief Perform a CAMELLIA-ECB block encryption/decryption operation. - * - * \param ctx The CAMELLIA context to use. This must be initialized - * and bound to a key. - * \param mode The mode of operation. This must be either - * #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. - * \param input The input block. This must be a readable buffer - * of size \c 16 Bytes. - * \param output The output block. This must be a writable buffer - * of size \c 16 Bytes. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_camellia_crypt_ecb(mbedtls_camellia_context *ctx, - int mode, - const unsigned char input[16], - unsigned char output[16]); - -#if defined(MBEDTLS_CIPHER_MODE_CBC) -/** - * \brief Perform a CAMELLIA-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 CAMELLIA context to use. This must be initialized - * and bound to a key. - * \param mode The mode of operation. This must be either - * #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. - * \param length The length in Bytes of the input data \p input. - * This must be a multiple of \c 16 Bytes. - * \param iv The initialization vector. This must be a read/write buffer - * of length \c 16 Bytes. It is updated to allow streaming - * use as explained above. - * \param input The buffer holding the input data. This must point to a - * readable buffer of length \p length Bytes. - * \param output The buffer holding the output data. This must point to a - * writable buffer of length \p length Bytes. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_camellia_crypt_cbc(mbedtls_camellia_context *ctx, - int mode, - size_t length, - unsigned char iv[16], - const unsigned char *input, - unsigned char *output); -#endif /* MBEDTLS_CIPHER_MODE_CBC */ - -#if defined(MBEDTLS_CIPHER_MODE_CFB) -/** - * \brief Perform a CAMELLIA-CFB128 buffer encryption/decryption - * operation. - * - * \note Due to the nature of CFB mode, you should use the same - * key for both encryption and decryption. In particular, calls - * to this function should be preceded by a key-schedule via - * mbedtls_camellia_setkey_enc() regardless of whether \p mode - * is #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. - * - * \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 CAMELLIA context to use. This must be initialized - * and bound to a key. - * \param mode The mode of operation. This must be either - * #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. - * \param length The length of the input data \p input. Any value is allowed. - * \param iv_off The current offset in the IV. This must be smaller - * than \c 16 Bytes. It is updated after this call to allow - * the aforementioned streaming usage. - * \param iv The initialization vector. This must be a read/write buffer - * of length \c 16 Bytes. It is updated after this call to - * allow the aforementioned streaming usage. - * \param input The buffer holding the input data. This must be a readable - * buffer of size \p length Bytes. - * \param output The buffer to hold 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_camellia_crypt_cfb128(mbedtls_camellia_context *ctx, - int mode, - size_t length, - size_t *iv_off, - unsigned char iv[16], - const unsigned char *input, - unsigned char *output); -#endif /* MBEDTLS_CIPHER_MODE_CFB */ - -#if defined(MBEDTLS_CIPHER_MODE_CTR) -/** - * \brief Perform a CAMELLIA-CTR buffer encryption/decryption operation. - * - * *note Due to the nature of CTR mode, you should use the same - * key for both encryption and decryption. In particular, calls - * to this function should be preceded by a key-schedule via - * mbedtls_camellia_setkey_enc() regardless of whether the mode - * is #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. - * - * \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**128 - * 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 \c 12 Bytes for the - * per-message nonce, and the last \c 4 Bytes for internal use. - * In that case, before calling this function on a new message you - * need to set the first \c 12 Bytes of \p nonce_counter to your - * chosen nonce value, the last four to \c 0, and \p nc_off to \c 0 - * (which will cause \p stream_block to be ignored). That way, you - * can encrypt at most \c 2**96 messages of up to \c 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. An alternative is to generate random nonces, - * but this limits the number of messages that can be securely - * encrypted: for example, with 96-bit random nonces, you should - * not encrypt more than 2**32 messages with the same key. - * - * Note that for both strategies, sizes are measured in blocks and - * that a CAMELLIA block is \c 16 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 CAMELLIA context to use. This must be initialized - * and bound to a key. - * \param length The length of the input data \p input in Bytes. - * Any value is allowed. - * \param nc_off The offset in the current \p stream_block (for resuming - * within current cipher stream). The offset pointer to - * should be \c 0 at the start of a stream. It is updated - * at the end of this call. - * \param nonce_counter The 128-bit nonce and counter. This must be a read/write - * buffer of length \c 16 Bytes. - * \param stream_block The saved stream-block for resuming. This must be a - * read/write buffer of length \c 16 Bytes. - * \param input The input data stream. This must be a readable buffer of - * size \p length Bytes. - * \param output The output data stream. This must be a writable buffer - * of size \p length Bytes. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_camellia_crypt_ctr(mbedtls_camellia_context *ctx, - size_t length, - size_t *nc_off, - unsigned char nonce_counter[16], - unsigned char stream_block[16], - const unsigned char *input, - unsigned char *output); -#endif /* MBEDTLS_CIPHER_MODE_CTR */ - -#if defined(MBEDTLS_SELF_TEST) - -/** - * \brief Checkup routine - * - * \return 0 if successful, or 1 if the test failed - */ -int mbedtls_camellia_self_test(int verbose); - -#endif /* MBEDTLS_SELF_TEST */ - -#ifdef __cplusplus -} -#endif - -#endif /* camellia.h */ |