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path: root/src/libstdcrypto/sha256_feed.c
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/* ISC license. */

#include <stdint.h>

#include <skalibs/bytestr.h>
#include <skalibs/sha256.h>
#include "sha256-internal.h"

void sha256_feed (SHA256Schedule *ctx, unsigned char inb)
{
  uint32_t tmp ;
  ctx->in[ctx->b>>2] <<= 8 ;
  ctx->in[ctx->b>>2] |= T8(inb) ;
  if (++ctx->b >= 64)
  {
    sha256_transform(ctx->buf, ctx->in) ;
    ctx->b = 0 ;
    for (uint32_t i = 0; i < 16 ; i++) ctx->in[i] = 0 ;
  }
  tmp = ctx->bits[0] ;
  ctx->bits[0] += 8 ;
  if (tmp > ctx->bits[0]) ctx->bits[1]++ ;
}