| /** |
| * \file xtea.h |
| * |
| * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org> |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the names of PolarSSL or XySSL nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
| * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #ifndef POLARSSL_XTEA_H |
| #define POLARSSL_XTEA_H |
| |
| #define XTEA_ENCRYPT 1 |
| #define XTEA_DECRYPT 0 |
| |
| |
| /** |
| * \brief XTEA context structure |
| */ |
| typedef struct |
| { |
| unsigned long k[4]; /*!< key */ |
| } |
| xtea_context; |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * \brief XTEA key schedule |
| * |
| * \param ctx XTEA context to be initialized |
| * \param key the secret key |
| */ |
| void xtea_setup( xtea_context *ctx, unsigned char key[16] ); |
| |
| /** |
| * \brief XTEA cipher function |
| * |
| * \param ctx XTEA context |
| * \param mode XTEA_ENCRYPT or XTEA_DECRYPT |
| * \param input 8-byte input block |
| * \param output 8-byte output block |
| */ |
| void xtea_crypt( xtea_context *ctx, |
| int mode, |
| unsigned char input[8], |
| unsigned char output[8] ); |
| |
| /* |
| * \brief Checkup routine |
| * |
| * \return 0 if successful, or 1 if the test failed |
| */ |
| int xtea_self_test( int verbose ); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* xtea.h */ |
