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18b0c39f99
* qatar/master: g723.1: fix addition overflow g723.1: simplify and fix multiplication overflow g723.1: deobfuscate an expression g723.1: remove unused #includes ARM: add missing "cc" clobber in av_clipl_int32_arm() rtmp: Factorize the code by adding handle_invoke_error rtmp: Factorize the code by adding handle_invoke_status rtmp: Factorize the code by adding handle_invoke_result libavutil: remove unused av_abort() macro ffmenc: replace if/abort with assert() libavutil: drop offsetof() fallback definition libavutil: drop fallback definitions of INTxx_MIN/MAX configure: Check for a sctp struct instead of just the header configure: suncc: Add -xc99 to dependency flags, required on Solaris doxygen: Fix function parameter names to match the code doc: Drop obsolete shared libs cflags hint to workaround Cygwin gcc bugs swf: Move shared table out of the header file swf: Move swf_audio_codec_tags table to the only place it is used fate: add G.723.1 decoder tests Conflicts: configure doc/platform.texi libavformat/Makefile libavutil/arm/intmath.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
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* A 32-bit implementation of the XTEA algorithm
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* Copyright (c) 2012 Samuel Pitoiset
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_XTEA_H
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#define AVUTIL_XTEA_H
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#include <stdint.h>
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/**
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* @defgroup lavu_xtea XTEA
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* @ingroup lavu_crypto
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* @{
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*/
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typedef struct AVXTEA {
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uint32_t key[16];
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} AVXTEA;
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/**
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* Initialize an AVXTEA context.
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*
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* @param ctx an AVXTEA context
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* @param key a key of 16 bytes used for encryption/decryption
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*/
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void av_xtea_init(struct AVXTEA *ctx, const uint8_t key[16]);
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/**
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* Encrypt or decrypt a buffer using a previously initialized context.
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*
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* @param ctx an AVXTEA context
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* @param dst destination array, can be equal to src
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* @param src source array, can be equal to dst
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* @param count number of 8 byte blocks
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* @param iv initialization vector for CBC mode, if NULL then ECB will be used
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* @param decrypt 0 for encryption, 1 for decryption
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*/
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void av_xtea_crypt(struct AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
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int count, uint8_t *iv, int decrypt);
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/**
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* @}
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*/
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#endif /* AVUTIL_XTEA_H */
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