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ffmpeg / libavutil / des.h @ 0871ae1a

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/*
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 * DES encryption/decryption
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 * Copyright (c) 2007 Reimar Doeffinger
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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 FFMPEG_DES_H
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#define FFMPEG_DES_H
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#include <stdint.h>
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#include "common.h"
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/**
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 * \brief en- or decrypt an 64-bit block of data with DES
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 * \param in data to process.
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 * \param key key to use for en-/decryption.
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 * \param decrypt if 0 encrypt, else decrypt.
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 * \return processed data
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 *
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 * If your input data is in 8-bit blocks treat it as big-endian
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 * (use e.g. AV_RB64 and AV_WB64).
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 */
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uint64_t ff_des_encdec(uint64_t in, uint64_t key, int decrypt) av_const;
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#endif /* FFMPEG_DES_H */