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Diffstat (limited to 'include/mbedtls/aria.h')
| -rw-r--r-- | include/mbedtls/aria.h | 341 |
1 files changed, 0 insertions, 341 deletions
diff --git a/include/mbedtls/aria.h b/include/mbedtls/aria.h deleted file mode 100644 index abb8a3d..0000000 --- a/include/mbedtls/aria.h +++ /dev/null @@ -1,341 +0,0 @@ -/** - * \file aria.h - * - * \brief ARIA block cipher - * - * The ARIA algorithm is a symmetric block cipher that can encrypt and - * decrypt information. It is defined by the Korean Agency for - * Technology and Standards (KATS) in <em>KS X 1213:2004</em> (in - * Korean, but see http://210.104.33.10/ARIA/index-e.html in English) - * and also described by the IETF in <em>RFC 5794</em>. - */ -/* - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - */ - -#ifndef MBEDTLS_ARIA_H -#define MBEDTLS_ARIA_H -#include "mbedtls/private_access.h" - -#include "mbedtls/build_info.h" - -#include <stddef.h> -#include <stdint.h> - -#include "mbedtls/platform_util.h" - -#define MBEDTLS_ARIA_ENCRYPT 1 /**< ARIA encryption. */ -#define MBEDTLS_ARIA_DECRYPT 0 /**< ARIA decryption. */ - -#define MBEDTLS_ARIA_BLOCKSIZE 16 /**< ARIA block size in bytes. */ -#define MBEDTLS_ARIA_MAX_ROUNDS 16 /**< Maximum number of rounds in ARIA. */ -#define MBEDTLS_ARIA_MAX_KEYSIZE 32 /**< Maximum size of an ARIA key in bytes. */ - -/** Bad input data. */ -#define MBEDTLS_ERR_ARIA_BAD_INPUT_DATA -0x005C - -/** Invalid data input length. */ -#define MBEDTLS_ERR_ARIA_INVALID_INPUT_LENGTH -0x005E - -#ifdef __cplusplus -extern "C" { -#endif - -#if !defined(MBEDTLS_ARIA_ALT) -// Regular implementation -// - -/** - * \brief The ARIA context-type definition. - */ -typedef struct mbedtls_aria_context { - unsigned char MBEDTLS_PRIVATE(nr); /*!< The number of rounds (12, 14 or 16) */ - /*! The ARIA round keys. */ - uint32_t MBEDTLS_PRIVATE(rk)[MBEDTLS_ARIA_MAX_ROUNDS + 1][MBEDTLS_ARIA_BLOCKSIZE / 4]; -} -mbedtls_aria_context; - -#else /* MBEDTLS_ARIA_ALT */ -#include "aria_alt.h" -#endif /* MBEDTLS_ARIA_ALT */ - -/** - * \brief This function initializes the specified ARIA context. - * - * It must be the first API called before using - * the context. - * - * \param ctx The ARIA context to initialize. This must not be \c NULL. - */ -void mbedtls_aria_init(mbedtls_aria_context *ctx); - -/** - * \brief This function releases and clears the specified ARIA context. - * - * \param ctx The ARIA context to clear. This may be \c NULL, in which - * case this function returns immediately. If it is not \c NULL, - * it must point to an initialized ARIA context. - */ -void mbedtls_aria_free(mbedtls_aria_context *ctx); - -/** - * \brief This function sets the encryption key. - * - * \param ctx The ARIA context to which the key should be bound. - * This must be initialized. - * \param key The encryption key. This must be a readable buffer - * of size \p keybits Bits. - * \param keybits The size of \p key in Bits. Valid options are: - * <ul><li>128 bits</li> - * <li>192 bits</li> - * <li>256 bits</li></ul> - * - * \return \c 0 on success. - * \return A negative error code on failure. - */ -int mbedtls_aria_setkey_enc(mbedtls_aria_context *ctx, - const unsigned char *key, - unsigned int keybits); - -/** - * \brief This function sets the decryption key. - * - * \param ctx The ARIA context to which the key should be bound. - * This must be initialized. - * \param key The decryption key. This must be a readable buffer - * of size \p keybits Bits. - * \param keybits The size of data passed. Valid options are: - * <ul><li>128 bits</li> - * <li>192 bits</li> - * <li>256 bits</li></ul> - * - * \return \c 0 on success. - * \return A negative error code on failure. - */ -int mbedtls_aria_setkey_dec(mbedtls_aria_context *ctx, - const unsigned char *key, - unsigned int keybits); - -/** - * \brief This function performs an ARIA single-block encryption or - * decryption operation. - * - * It performs encryption or decryption (depending on whether - * the key was set for encryption on decryption) on the input - * data buffer defined in the \p input parameter. - * - * mbedtls_aria_init(), and either mbedtls_aria_setkey_enc() or - * mbedtls_aria_setkey_dec() must be called before the first - * call to this API with the same context. - * - * \param ctx The ARIA context to use for encryption or decryption. - * This must be initialized and bound to a key. - * \param input The 16-Byte buffer holding the input data. - * \param output The 16-Byte buffer holding the output data. - - * \return \c 0 on success. - * \return A negative error code on failure. - */ -int mbedtls_aria_crypt_ecb(mbedtls_aria_context *ctx, - const unsigned char input[MBEDTLS_ARIA_BLOCKSIZE], - unsigned char output[MBEDTLS_ARIA_BLOCKSIZE]); - -#if defined(MBEDTLS_CIPHER_MODE_CBC) -/** - * \brief This function performs an ARIA-CBC encryption or decryption operation - * on full blocks. - * - * It performs the operation defined in the \p mode - * parameter (encrypt/decrypt), on the input data buffer defined in - * the \p input parameter. - * - * It can be called as many times as needed, until all the input - * data is processed. mbedtls_aria_init(), and either - * mbedtls_aria_setkey_enc() or mbedtls_aria_setkey_dec() must be called - * before the first call to this API with the same context. - * - * \note This function operates on aligned blocks, that is, the input size - * must be a multiple of the ARIA block size of 16 Bytes. - * - * \note Upon exit, the content of the IV is updated so that you can - * call the same function again on the next - * block(s) of data and get the same result as if it was - * encrypted in one call. This allows a "streaming" usage. - * If you need to retain the contents of the IV, you should - * either save it manually or use the cipher module instead. - * - * - * \param ctx The ARIA context to use for encryption or decryption. - * This must be initialized and bound to a key. - * \param mode The mode of operation. This must be either - * #MBEDTLS_ARIA_ENCRYPT for encryption, or - * #MBEDTLS_ARIA_DECRYPT for decryption. - * \param length The length of the input data in Bytes. This must be a - * multiple of the block size (16 Bytes). - * \param iv Initialization vector (updated after use). - * This must be a readable buffer of size 16 Bytes. - * \param input The buffer holding the input data. This must - * be a readable buffer of length \p length Bytes. - * \param output The buffer holding the output data. This must - * be a writable buffer of length \p length Bytes. - * - * \return \c 0 on success. - * \return A negative error code on failure. - */ -int mbedtls_aria_crypt_cbc(mbedtls_aria_context *ctx, - int mode, - size_t length, - unsigned char iv[MBEDTLS_ARIA_BLOCKSIZE], - const unsigned char *input, - unsigned char *output); -#endif /* MBEDTLS_CIPHER_MODE_CBC */ - -#if defined(MBEDTLS_CIPHER_MODE_CFB) -/** - * \brief This function performs an ARIA-CFB128 encryption or decryption - * operation. - * - * It performs the operation defined in the \p mode - * parameter (encrypt or decrypt), on the input data buffer - * defined in the \p input parameter. - * - * For CFB, you must set up the context with mbedtls_aria_setkey_enc(), - * regardless of whether you are performing an encryption or decryption - * operation, that is, regardless of the \p mode parameter. This is - * because CFB mode uses the same key schedule for encryption and - * decryption. - * - * \note Upon exit, the content of the IV is updated so that you can - * call the same function again on the next - * block(s) of data and get the same result as if it was - * encrypted in one call. This allows a "streaming" usage. - * If you need to retain the contents of the - * IV, you must either save it manually or use the cipher - * module instead. - * - * - * \param ctx The ARIA context to use for encryption or decryption. - * This must be initialized and bound to a key. - * \param mode The mode of operation. This must be either - * #MBEDTLS_ARIA_ENCRYPT for encryption, or - * #MBEDTLS_ARIA_DECRYPT for decryption. - * \param length The length of the input data \p input in Bytes. - * \param iv_off The offset in IV (updated after use). - * This must not be larger than 15. - * \param iv The initialization vector (updated after use). - * This must be a readable buffer of size 16 Bytes. - * \param input The buffer holding the input data. This must - * be a readable buffer of length \p length Bytes. - * \param output The buffer holding the output data. This must - * be a writable buffer of length \p length Bytes. - * - * \return \c 0 on success. - * \return A negative error code on failure. - */ -int mbedtls_aria_crypt_cfb128(mbedtls_aria_context *ctx, - int mode, - size_t length, - size_t *iv_off, - unsigned char iv[MBEDTLS_ARIA_BLOCKSIZE], - const unsigned char *input, - unsigned char *output); -#endif /* MBEDTLS_CIPHER_MODE_CFB */ - -#if defined(MBEDTLS_CIPHER_MODE_CTR) -/** - * \brief This function performs an ARIA-CTR encryption or decryption - * operation. - * - * Due to the nature of CTR, you must use the same key schedule - * for both encryption and decryption operations. Therefore, you - * must use the context initialized with mbedtls_aria_setkey_enc() - * for both #MBEDTLS_ARIA_ENCRYPT and #MBEDTLS_ARIA_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 12 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 12 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**96 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. 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 an ARIA block is 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 ARIA context to use for encryption or decryption. - * This must be initialized and bound to a key. - * \param length The length of the input data \p input in Bytes. - * \param nc_off The offset in Bytes in the current \p stream_block, - * for resuming within the current cipher stream. The - * offset pointer should be \c 0 at the start of a - * stream. This must not be larger than \c 15 Bytes. - * \param nonce_counter The 128-bit nonce and counter. This must point to - * a read/write buffer of length \c 16 bytes. - * \param stream_block The saved stream block for resuming. This must - * point to a read/write buffer of length \c 16 bytes. - * This is overwritten by the function. - * \param input The buffer holding the input data. This must - * be a readable buffer of length \p length Bytes. - * \param output The buffer holding the output data. This must - * be a writable buffer of length \p length Bytes. - * - * \return \c 0 on success. - * \return A negative error code on failure. - */ -int mbedtls_aria_crypt_ctr(mbedtls_aria_context *ctx, - size_t length, - size_t *nc_off, - unsigned char nonce_counter[MBEDTLS_ARIA_BLOCKSIZE], - unsigned char stream_block[MBEDTLS_ARIA_BLOCKSIZE], - const unsigned char *input, - unsigned char *output); -#endif /* MBEDTLS_CIPHER_MODE_CTR */ - -#if defined(MBEDTLS_SELF_TEST) -/** - * \brief Checkup routine. - * - * \return \c 0 on success, or \c 1 on failure. - */ -int mbedtls_aria_self_test(int verbose); -#endif /* MBEDTLS_SELF_TEST */ - -#ifdef __cplusplus -} -#endif - -#endif /* aria.h */ |