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Diffstat (limited to 'libavutil/aes_internal.h')
-rw-r--r-- | libavutil/aes_internal.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/libavutil/aes_internal.h b/libavutil/aes_internal.h new file mode 100644 index 0000000000..494425878d --- /dev/null +++ b/libavutil/aes_internal.h @@ -0,0 +1,43 @@ +/* + * copyright (c) 2015 Rodger Combs <rodger.combs@gmail.com> + * + * 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 AVUTIL_AES_INTERNAL_H +#define AVUTIL_AES_INTERNAL_H + +#include "mem.h" +#include <stdint.h> + +typedef union { + uint64_t u64[2]; + uint32_t u32[4]; + uint8_t u8x4[4][4]; + uint8_t u8[16]; +} av_aes_block; + +typedef struct AVAES { + // Note: round_key[16] is accessed in the init code, but this only + // overwrites state, which does not matter (see also commit ba554c0). + DECLARE_ALIGNED(16, av_aes_block, round_key)[15]; + DECLARE_ALIGNED(16, av_aes_block, state)[2]; + int rounds; + void (*crypt)(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int rounds); +} AVAES; + +#endif /* AVUTIL_AES_INTERNAL_H */ |