From ef3c7c33282488796736e6150dbf9c18b68fb3ba Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 13 Mar 2007 12:19:20 +0000 Subject: [PATCH] borrow finalization algo from sha1 (100byte smaller) Originally committed as revision 8383 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavutil/md5.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/libavutil/md5.c b/libavutil/md5.c index 1dfd06b..1f100de 100644 --- a/libavutil/md5.c +++ b/libavutil/md5.c @@ -139,22 +139,14 @@ void av_md5_update(AVMD5 *ctx, const uint8_t *src, const int len){ } void av_md5_final(AVMD5 *ctx, uint8_t *dst){ - int i, j; - - j= ctx->len & 63; - ctx->block[j++] = 0x80; - - memset(&ctx->block[j], 0, 64 - j); - - if( 56 < j ){ - body( ctx->ABCD, (uint32_t*) ctx->block ); - memset(ctx->block, 0, 64); - } + int i; + uint64_t finalcount= le2me_64(ctx->len<<3); - for(i=0; i<8; i++) - ctx->block[56+i] = (ctx->len << 3) >> (i<<3); + av_md5_update(ctx, "\200", 1); + while((ctx->len & 63)<56) + av_md5_update(ctx, "", 1); - body(ctx->ABCD, (uint32_t*) ctx->block); + av_md5_update(ctx, &finalcount, 8); for(i=0; i<4; i++) ((uint32_t*)dst)[i]= le2me_32(ctx->ABCD[3-i]); -- 2.7.4