Ejemplos de blake2b_is_lastblock en C++ (Cpp)

Ejemplo n.º 1

Archivo: blake2b.c Proyecto: spurious/sagittarius-scheme-mirror

int blake2b_done(hash_state *md, unsigned char *out)
{
   unsigned char buffer[BLAKE2B_OUTBYTES] = { 0 };
   unsigned long i;

   LTC_ARGCHK(md != NULL);
   LTC_ARGCHK(out != NULL);

   /* if(md->blakebs.outlen != outlen) return CRYPT_INVALID_ARG; */

   if (blake2b_is_lastblock(md))
      return CRYPT_ERROR;

   blake2b_increment_counter(md, md->blake2b.curlen);
   blake2b_set_lastblock(md);
   XMEMSET(md->blake2b.buf + md->blake2b.curlen, 0, BLAKE2B_BLOCKBYTES - md->blake2b.curlen); /* Padding */
   blake2b_compress(md, md->blake2b.buf);

   for (i = 0; i < 8; ++i) /* Output full hash to temp buffer */
      STORE64L(md->blake2b.h[i], buffer + i * 8);

   XMEMCPY(out, buffer, md->blake2b.outlen);
   zeromem(md, sizeof(hash_state));
#ifdef LTC_CLEAN_STACK
   zeromem(buffer, sizeof(buffer));
#endif
   return CRYPT_OK;
}

Ejemplo n.º 2

Archivo: blake2b-ref.c Proyecto: CryptoManiac/BLAKE2

/* Is this correct? */
int blake2b_final( blake2b_state *S, uint8_t *out, uint8_t outlen )
{
  uint8_t buffer[BLAKE2B_OUTBYTES] = {0};

  if( out == NULL || outlen == 0 || outlen > BLAKE2B_OUTBYTES )
    return -1;

  if( blake2b_is_lastblock( S ) )
    return -1;

  if( S->buflen > BLAKE2B_BLOCKBYTES )
  {
    blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
    blake2b_compress( S, S->buf );
    S->buflen -= BLAKE2B_BLOCKBYTES;
    memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen );
  }

  blake2b_increment_counter( S, S->buflen );
  blake2b_set_lastblock( S );
  memset( S->buf + S->buflen, 0, 2 * BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
  blake2b_compress( S, S->buf );

  for( int i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
    store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );

  memcpy( out, buffer, outlen );
  return 0;
}

Ejemplo n.º 3

Archivo: blake2b-ref.c Proyecto: Abogical/borg

int blake2b_final( blake2b_state *S, void *out, size_t outlen )
{
  uint8_t buffer[BLAKE2B_OUTBYTES] = {0};
  size_t i;

  if( out == NULL || outlen < S->outlen )
    return -1;

  if( blake2b_is_lastblock( S ) )
    return -1;

  blake2b_increment_counter( S, S->buflen );
  blake2b_set_lastblock( S );
  memset( S->buf + S->buflen, 0, BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
  blake2b_compress( S, S->buf );

  for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
    store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );

  memcpy( out, buffer, S->outlen );
  secure_zero_memory(buffer, sizeof(buffer));
  return 0;
}

Ejemplo n.º 4

Archivo: blake2b.c Proyecto: dchest/pyblake2

int blake2b_final( blake2b_state *S, uint8_t *out, uint8_t outlen )
{
  if( outlen > BLAKE2B_OUTBYTES )
    return -1;

  if( blake2b_is_lastblock( S ) )
    return -1;

  if( S->buflen > BLAKE2B_BLOCKBYTES )
  {
    blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
    blake2b_compress( S, S->buf );
    S->buflen -= BLAKE2B_BLOCKBYTES;
    memmove( S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen );
  }

  blake2b_increment_counter( S, S->buflen );
  blake2b_set_lastblock( S );
  memset( S->buf + S->buflen, 0, 2 * BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
  blake2b_compress( S, S->buf );
  memcpy( out, &S->h[0], outlen );
  return 0;
}