--- /dev/null
+/**
+ * \file aes.h
+ *
+ * \brief AES block cipher
+ *
+ * Copyright (C) 2006-2014, Brainspark B.V.
+ *
+ * This file is part of PolarSSL (http://www.polarssl.org)
+ * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef POLARSSL_AES_H
+#define POLARSSL_AES_H
+
+#if !defined(POLARSSL_CONFIG_FILE)
+#include "polarssl_config.h"
+#else
+#include POLARSSL_CONFIG_FILE
+#endif
+
+#include <string.h>
+
+#if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
+#include <basetsd.h>
+typedef UINT32 uint32_t;
+#else
+#include <inttypes.h>
+#endif
+
+/* padlock.c and aesni.c rely on these values! */
+#define AES_ENCRYPT 1
+#define AES_DECRYPT 0
+
+#define POLARSSL_ERR_AES_INVALID_KEY_LENGTH -0x0020 /**< Invalid key length. */
+#define POLARSSL_ERR_AES_INVALID_INPUT_LENGTH -0x0022 /**< Invalid data input length. */
+
+#if !defined(POLARSSL_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
+{
+ int nr; /*!< number of rounds */
+ uint32_t *rk; /*!< AES round keys */
+ uint32_t buf[68]; /*!< unaligned data */
+}
+aes_context;
+
+/**
+ * \brief Initialize AES context
+ *
+ * \param ctx AES context to be initialized
+ */
+void aes_init( aes_context *ctx );
+
+/**
+ * \brief Clear AES context
+ *
+ * \param ctx AES context to be cleared
+ */
+void aes_free( aes_context *ctx );
+
+/**
+ * \brief AES key schedule (encryption)
+ *
+ * \param ctx AES context to be initialized
+ * \param key encryption key
+ * \param keysize must be 128, 192 or 256
+ *
+ * \return 0 if successful, or POLARSSL_ERR_AES_INVALID_KEY_LENGTH
+ */
+int aes_setkey_enc( aes_context *ctx, const unsigned char *key,
+ unsigned int keysize );
+
+/**
+ * \brief AES key schedule (decryption)
+ *
+ * \param ctx AES context to be initialized
+ * \param key decryption key
+ * \param keysize must be 128, 192 or 256
+ *
+ * \return 0 if successful, or POLARSSL_ERR_AES_INVALID_KEY_LENGTH
+ */
+int aes_setkey_dec( aes_context *ctx, const unsigned char *key,
+ unsigned int keysize );
+
+/**
+ * \brief AES-ECB block encryption/decryption
+ *
+ * \param ctx AES context
+ * \param mode AES_ENCRYPT or AES_DECRYPT
+ * \param input 16-byte input block
+ * \param output 16-byte output block
+ *
+ * \return 0 if successful
+ */
+int aes_crypt_ecb( aes_context *ctx,
+ int mode,
+ const unsigned char input[16],
+ unsigned char output[16] );
+
+#if defined(POLARSSL_CIPHER_MODE_CBC)
+/**
+ * \brief AES-CBC buffer encryption/decryption
+ * Length should be a multiple of the block
+ * size (16 bytes)
+ *
+ * \param ctx AES context
+ * \param mode AES_ENCRYPT or 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 POLARSSL_ERR_AES_INVALID_INPUT_LENGTH
+ */
+int aes_crypt_cbc( aes_context *ctx,
+ int mode,
+ size_t length,
+ unsigned char iv[16],
+ const unsigned char *input,
+ unsigned char *output );
+#endif /* POLARSSL_CIPHER_MODE_CBC */
+
+#if defined(POLARSSL_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
+ * aes_setkey_enc() for both AES_ENCRYPT and AES_DECRYPT.
+ *
+ * \param ctx AES context
+ * \param mode AES_ENCRYPT or 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 aes_crypt_cfb128( 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
+ * aes_setkey_enc() for both AES_ENCRYPT and AES_DECRYPT.
+ *
+ * \param ctx AES context
+ * \param mode AES_ENCRYPT or 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 aes_crypt_cfb8( aes_context *ctx,
+ int mode,
+ size_t length,
+ unsigned char iv[16],
+ const unsigned char *input,
+ unsigned char *output );
+#endif /*POLARSSL_CIPHER_MODE_CFB */
+
+#if defined(POLARSSL_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
+ * aes_setkey_enc() for both AES_ENCRYPT and 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 aes_crypt_ctr( 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 /* POLARSSL_CIPHER_MODE_CTR */
+
+#ifdef __cplusplus
+}
+#endif
+
+#else /* POLARSSL_AES_ALT */
+#include "aes_alt.h"
+#endif /* POLARSSL_AES_ALT */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Checkup routine
+ *
+ * \return 0 if successful, or 1 if the test failed
+ */
+int aes_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* aes.h */
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