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Diff: targets/TARGET_NUVOTON/TARGET_NUC472/crypto/aes/aes_alt.h
- Revision:
- 153:9398a535854b
- Parent:
- 152:9a67f0b066fc
--- a/targets/TARGET_NUVOTON/TARGET_NUC472/crypto/aes/aes_alt.h Thu Dec 15 11:48:27 2016 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,274 +0,0 @@ -/** - * \file aes_alt.h - * - * \brief AES 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) - */ - -#if defined(MBEDTLS_AES_ALT) -// Regular implementation -// -#ifdef __cplusplus -extern "C" { -#endif - -/** - * \brief AES context structure - * - * \note buf is able to hold 32 extra bytes, which can be used: - * - for alignment purposes if VIA padlock is used, and/or - * - to simplify key expansion in the 256-bit case by - * generating an extra round key - */ -typedef struct -{ - uint32_t keySize; - uint32_t encDec; - uint32_t opMode; - uint32_t channel; - uint32_t swapType; - uint32_t *iv; - unsigned char prv_iv[16]; -#if 1 - uint32_t buf[8]; -/* For comparsion with software AES for correctness */ -#else - uint32_t buf[68]; /*!< unaligned data */ - int nr; /*!< number of rounds */ - uint32_t *rk; /*!< AES round keys */ -#endif -} -mbedtls_aes_context; - -/** - * \brief Initialize AES context - * - * \param ctx AES context to be initialized - */ -void mbedtls_aes_init( mbedtls_aes_context *ctx ); - -/** - * \brief Clear AES context - * - * \param ctx AES context to be cleared - */ -void mbedtls_aes_free( mbedtls_aes_context *ctx ); - -/** - * \brief AES key schedule (encryption) - * - * \param ctx AES context to be initialized - * \param key encryption key - * \param keybits must be 128, 192 or 256 - * - * \return 0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH - */ -int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key, - unsigned int keybits ); - -/** - * \brief AES key schedule (decryption) - * - * \param ctx AES context to be initialized - * \param key decryption key - * \param keybits must be 128, 192 or 256 - * - * \return 0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH - */ -int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key, - unsigned int keybits ); - -/** - * \brief AES-ECB block encryption/decryption - * - * \param ctx AES context - * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT - * \param input 16-byte input block - * \param output 16-byte output block - * - * \return 0 if successful - */ -int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx, - int mode, - const unsigned char input[16], - unsigned char output[16] ); - -#if defined(MBEDTLS_CIPHER_MODE_CBC) -/** - * \brief AES-CBC buffer encryption/decryption - * Length should be a multiple of the block - * size (16 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 AES context - * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_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_AES_INVALID_INPUT_LENGTH - */ -int mbedtls_aes_crypt_cbc( mbedtls_aes_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 AES-CFB128 buffer encryption/decryption. - * - * Note: Due to the nature of CFB you should use the same key schedule for - * both encryption and decryption. So a context initialized with - * mbedtls_aes_setkey_enc() for both MBEDTLS_AES_ENCRYPT and MBEDTLS_AES_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 AES context - * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_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_aes_crypt_cfb128( mbedtls_aes_context *ctx, - int mode, - size_t length, - size_t *iv_off, - unsigned char iv[16], - const unsigned char *input, - unsigned char *output ); - -/** - * \brief AES-CFB8 buffer encryption/decryption. - * - * Note: Due to the nature of CFB you should use the same key schedule for - * both encryption and decryption. So a context initialized with - * mbedtls_aes_setkey_enc() for both MBEDTLS_AES_ENCRYPT and MBEDTLS_AES_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 AES context - * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_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 - */ -int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx, - int mode, - size_t length, - unsigned char iv[16], - const unsigned char *input, - unsigned char *output ); -#endif /*MBEDTLS_CIPHER_MODE_CFB */ - -#if defined(MBEDTLS_CIPHER_MODE_CTR) -/** - * \brief AES-CTR buffer encryption/decryption - * - * Warning: You have to keep the maximum use of your counter in mind! - * - * Note: Due to the nature of CTR you should use the same key schedule for - * both encryption and decryption. So a context initialized with - * mbedtls_aes_setkey_enc() for both MBEDTLS_AES_ENCRYPT and MBEDTLS_AES_DECRYPT. - * - * \param ctx AES 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 128-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_aes_crypt_ctr( mbedtls_aes_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 */ - -/** - * \brief Internal AES block encryption function - * (Only exposed to allow overriding it, - * see MBEDTLS_AES_ENCRYPT_ALT) - * - * \param ctx AES context - * \param input Plaintext block - * \param output Output (ciphertext) block - */ -void mbedtls_aes_encrypt( mbedtls_aes_context *ctx, - const unsigned char input[16], - unsigned char output[16] ); - -/** - * \brief Internal AES block decryption function - * (Only exposed to allow overriding it, - * see MBEDTLS_AES_DECRYPT_ALT) - * - * \param ctx AES context - * \param input Ciphertext block - * \param output Output (plaintext) block - */ -void mbedtls_aes_decrypt( mbedtls_aes_context *ctx, - const unsigned char input[16], - unsigned char output[16] ); - -#ifdef __cplusplus -} -#endif - - -#endif /* MBEDTLS_AES_ALT */ - -