skalibs

Mirror/fork of https://skarnet.org/software/skalibs/
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sha256_feed.c (503B)

      1 /* ISC license. */
      2 
      3 #include <stdint.h>
      4 
      5 #include <skalibs/bytestr.h>
      6 #include <skalibs/sha256.h>
      7 #include "sha256-internal.h"
      8 
      9 void sha256_feed (SHA256Schedule *ctx, unsigned char inb)
     10 {
     11   uint32_t tmp ;
     12   ctx->in[ctx->b>>2] <<= 8 ;
     13   ctx->in[ctx->b>>2] |= T8(inb) ;
     14   if (++ctx->b >= 64)
     15   {
     16     sha256_transform(ctx->buf, ctx->in) ;
     17     ctx->b = 0 ;
     18     for (uint32_t i = 0; i < 16 ; i++) ctx->in[i] = 0 ;
     19   }
     20   tmp = ctx->bits[0] ;
     21   ctx->bits[0] += 8 ;
     22   if (tmp > ctx->bits[0]) ctx->bits[1]++ ;
     23 }