1 files changed, 39 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavutil/des.h b/contrib/ffmpeg/libavutil/des.h
new file mode 100644
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+++ b/contrib/ffmpeg/libavutil/des.h
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+/*
+ * DES encryption/decryption
+ * Copyright (c) 2007 Reimar Doeffinger
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFMPEG_DES_H
+#define FFMPEG_DES_H
+
+#include <stdint.h>
+
+/**
+ * \brief en- or decrypt an 64-bit block of data with DES
+ * \param in data to process.
+ * \param key key to use for en-/decryption.
+ * \param decrypt if 0 encrypt, else decrypt.
+ * \return processed data
+ *
+ * If your input data is in 8-bit blocks treat it as big-endian
+ * (use e.g. AV_RB64 and AV_WB64).
+ */
+uint64_t ff_des_encdec(uint64_t in, uint64_t key, int decrypt);
+
+#endif /* FFMPEG_DES_H */