void updateHash()

in lib/src/sha1.dart [57:101]

• 40 lines of code
• 6 McCabe index (conditional complexity)

  void updateHash(Uint32List chunk) {
    assert(chunk.length == 16);

    var a = digest[0];
    var b = digest[1];
    var c = digest[2];
    var d = digest[3];
    var e = digest[4];

    for (var i = 0; i < 80; i++) {
      if (i < 16) {
        _extended[i] = chunk[i];
      } else {
        _extended[i] = rotl32(
            _extended[i - 3] ^
                _extended[i - 8] ^
                _extended[i - 14] ^
                _extended[i - 16],
            1);
      }

      var newA = add32(add32(rotl32(a, 5), e), _extended[i]);
      if (i < 20) {
        newA = add32(add32(newA, (b & c) | (~b & d)), 0x5A827999);
      } else if (i < 40) {
        newA = add32(add32(newA, (b ^ c ^ d)), 0x6ED9EBA1);
      } else if (i < 60) {
        newA = add32(add32(newA, (b & c) | (b & d) | (c & d)), 0x8F1BBCDC);
      } else {
        newA = add32(add32(newA, b ^ c ^ d), 0xCA62C1D6);
      }

      e = d;
      d = c;
      c = rotl32(b, 30);
      b = a;
      a = newA & mask32;
    }

    digest[0] = add32(a, digest[0]);
    digest[1] = add32(b, digest[1]);
    digest[2] = add32(c, digest[2]);
    digest[3] = add32(d, digest[3]);
    digest[4] = add32(e, digest[4]);
  }