diff options
Diffstat (limited to 'contrib/ffmpeg/libavutil/sha1.c')
| -rw-r--r-- | contrib/ffmpeg/libavutil/sha1.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/contrib/ffmpeg/libavutil/sha1.c b/contrib/ffmpeg/libavutil/sha1.c index 6c10791f4..61ad38de2 100644 --- a/contrib/ffmpeg/libavutil/sha1.c +++ b/contrib/ffmpeg/libavutil/sha1.c @@ -1,8 +1,26 @@ -// SHA-1 code Copyright 2007 Michael Nidermayer <michaelni@gmx.at> -// license LGPL -// based on public domain SHA-1 code by Steve Reid <steve@edmweb.com> +/* + * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> + * based on public domain SHA-1 code by Steve Reid <steve@edmweb.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 + */ #include "common.h" +#include "bswap.h" #include "sha1.h" typedef struct AVSHA1 { @@ -11,10 +29,12 @@ typedef struct AVSHA1 { uint32_t state[5]; } AVSHA1; +const int av_sha1_size = sizeof(AVSHA1); + #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) /* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */ -#define blk0(i) (block[i] = be2me_32(((uint32_t*)buffer)[i])) +#define blk0(i) (block[i] = be2me_32(((const uint32_t*)buffer)[i])) #define blk(i) (block[i] = rol(block[i-3]^block[i-8]^block[i-14]^block[i-16],1)) #define R0(v,w,x,y,z,i) z+=((w&(x^y))^y) +blk0(i)+0x5A827999+rol(v,5);w=rol(w,30); @@ -25,7 +45,7 @@ typedef struct AVSHA1 { /* Hash a single 512-bit block. This is the core of the algorithm. */ -static void transform(uint32_t state[5], uint8_t buffer[64]){ +static void transform(uint32_t state[5], const uint8_t buffer[64]){ uint32_t block[80]; unsigned int i, a, b, c, d, e; @@ -85,7 +105,7 @@ void av_sha1_init(AVSHA1* ctx){ ctx->count = 0; } -void av_sha1_update(AVSHA1* ctx, uint8_t* data, unsigned int len){ +void av_sha1_update(AVSHA1* ctx, const uint8_t* data, unsigned int len){ unsigned int i, j; j = ctx->count & 63; @@ -120,7 +140,7 @@ void av_sha1_final(AVSHA1* ctx, uint8_t digest[20]){ while ((ctx->count & 63) != 56) { av_sha1_update(ctx, "", 1); } - av_sha1_update(ctx, &finalcount, 8); /* Should cause a transform() */ + av_sha1_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */ for(i=0; i<5; i++) ((uint32_t*)digest)[i]= be2me_32(ctx->state[i]); } @@ -131,7 +151,7 @@ void av_sha1_final(AVSHA1* ctx, uint8_t digest[20]){ #include <stdio.h> #undef printf -int main(){ +int main(void){ int i, k; AVSHA1 ctx; unsigned char digest[20]; |