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1 /*
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2 * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
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3 * Copyright (C) 2013 James Almer <jamrial@gmail.com>
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4 *
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5 * This file is part of FFmpeg.
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6 *
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7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
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9 * License as published by the Free Software Foundation; either
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10 * version 2.1 of the License, or (at your option) any later version.
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11 *
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12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with FFmpeg; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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20 */
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21
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22 #ifndef AVUTIL_RIPEMD_H
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23 #define AVUTIL_RIPEMD_H
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24
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25 #include <stdint.h>
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26
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27 #include "attributes.h"
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28 #include "version.h"
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29
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30 /**
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31 * @defgroup lavu_ripemd RIPEMD
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32 * @ingroup lavu_crypto
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33 * @{
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34 */
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35
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36 extern const int av_ripemd_size;
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37
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38 struct AVRIPEMD;
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39
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40 /**
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41 * Allocate an AVRIPEMD context.
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42 */
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43 struct AVRIPEMD *av_ripemd_alloc(void);
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44
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45 /**
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46 * Initialize RIPEMD hashing.
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47 *
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48 * @param context pointer to the function context (of size av_ripemd_size)
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49 * @param bits number of bits in digest (128, 160, 256 or 320 bits)
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50 * @return zero if initialization succeeded, -1 otherwise
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51 */
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52 int av_ripemd_init(struct AVRIPEMD* context, int bits);
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53
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54 /**
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55 * Update hash value.
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56 *
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57 * @param context hash function context
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58 * @param data input data to update hash with
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59 * @param len input data length
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60 */
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61 void av_ripemd_update(struct AVRIPEMD* context, const uint8_t* data, unsigned int len);
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62
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63 /**
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64 * Finish hashing and output digest value.
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65 *
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66 * @param context hash function context
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67 * @param digest buffer where output digest value is stored
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68 */
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69 void av_ripemd_final(struct AVRIPEMD* context, uint8_t *digest);
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70
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71 /**
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72 * @}
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73 */
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74
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75 #endif /* AVUTIL_RIPEMD_H */
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