processBlock method

@override void processBlock()

Process a whole block of data in extender digest.

Implementation

@override
void processBlock() {
  var a = state[0];
  var b = state[1];
  var c = state[2];
  var d = state[3];

  // Round 1 - F cycle, 16 times.
  a = sum32(crotl32(a + _f(b, c, d) + buffer[0] + 0xd76aa478, _S11), b);
  d = sum32(crotl32(d + _f(a, b, c) + buffer[1] + 0xe8c7b756, _S12), a);
  c = sum32(crotl32(c + _f(d, a, b) + buffer[2] + 0x242070db, _S13), d);
  b = sum32(crotl32(b + _f(c, d, a) + buffer[3] + 0xc1bdceee, _S14), c);
  a = sum32(crotl32(a + _f(b, c, d) + buffer[4] + 0xf57c0faf, _S11), b);
  d = sum32(crotl32(d + _f(a, b, c) + buffer[5] + 0x4787c62a, _S12), a);
  c = sum32(crotl32(c + _f(d, a, b) + buffer[6] + 0xa8304613, _S13), d);
  b = sum32(crotl32(b + _f(c, d, a) + buffer[7] + 0xfd469501, _S14), c);
  a = sum32(crotl32(a + _f(b, c, d) + buffer[8] + 0x698098d8, _S11), b);
  d = sum32(crotl32(d + _f(a, b, c) + buffer[9] + 0x8b44f7af, _S12), a);
  c = sum32(crotl32(c + _f(d, a, b) + buffer[10] + 0xffff5bb1, _S13), d);
  b = sum32(crotl32(b + _f(c, d, a) + buffer[11] + 0x895cd7be, _S14), c);
  a = sum32(crotl32(a + _f(b, c, d) + buffer[12] + 0x6b901122, _S11), b);
  d = sum32(crotl32(d + _f(a, b, c) + buffer[13] + 0xfd987193, _S12), a);
  c = sum32(crotl32(c + _f(d, a, b) + buffer[14] + 0xa679438e, _S13), d);
  b = sum32(crotl32(b + _f(c, d, a) + buffer[15] + 0x49b40821, _S14), c);

  // Round 2 - G cycle, 16 time_S.
  a = sum32(crotl32(a + _g(b, c, d) + buffer[1] + 0xf61e2562, _S21), b);
  d = sum32(crotl32(d + _g(a, b, c) + buffer[6] + 0xc040b340, _S22), a);
  c = sum32(crotl32(c + _g(d, a, b) + buffer[11] + 0x265e5a51, _S23), d);
  b = sum32(crotl32(b + _g(c, d, a) + buffer[0] + 0xe9b6c7aa, _S24), c);
  a = sum32(crotl32(a + _g(b, c, d) + buffer[5] + 0xd62f105d, _S21), b);
  d = sum32(crotl32(d + _g(a, b, c) + buffer[10] + 0x02441453, _S22), a);
  c = sum32(crotl32(c + _g(d, a, b) + buffer[15] + 0xd8a1e681, _S23), d);
  b = sum32(crotl32(b + _g(c, d, a) + buffer[4] + 0xe7d3fbc8, _S24), c);
  a = sum32(crotl32(a + _g(b, c, d) + buffer[9] + 0x21e1cde6, _S21), b);
  d = sum32(crotl32(d + _g(a, b, c) + buffer[14] + 0xc33707d6, _S22), a);
  c = sum32(crotl32(c + _g(d, a, b) + buffer[3] + 0xf4d50d87, _S23), d);
  b = sum32(crotl32(b + _g(c, d, a) + buffer[8] + 0x455a14ed, _S24), c);
  a = sum32(crotl32(a + _g(b, c, d) + buffer[13] + 0xa9e3e905, _S21), b);
  d = sum32(crotl32(d + _g(a, b, c) + buffer[2] + 0xfcefa3f8, _S22), a);
  c = sum32(crotl32(c + _g(d, a, b) + buffer[7] + 0x676f02d9, _S23), d);
  b = sum32(crotl32(b + _g(c, d, a) + buffer[12] + 0x8d2a4c8a, _S24), c);

  // Round 3 - H cycle, 16 time_S.
  a = sum32(crotl32(a + _h(b, c, d) + buffer[5] + 0xfffa3942, _S31), b);
  d = sum32(crotl32(d + _h(a, b, c) + buffer[8] + 0x8771f681, _S32), a);
  c = sum32(crotl32(c + _h(d, a, b) + buffer[11] + 0x6d9d6122, _S33), d);
  b = sum32(crotl32(b + _h(c, d, a) + buffer[14] + 0xfde5380c, _S34), c);
  a = sum32(crotl32(a + _h(b, c, d) + buffer[1] + 0xa4beea44, _S31), b);
  d = sum32(crotl32(d + _h(a, b, c) + buffer[4] + 0x4bdecfa9, _S32), a);
  c = sum32(crotl32(c + _h(d, a, b) + buffer[7] + 0xf6bb4b60, _S33), d);
  b = sum32(crotl32(b + _h(c, d, a) + buffer[10] + 0xbebfbc70, _S34), c);
  a = sum32(crotl32(a + _h(b, c, d) + buffer[13] + 0x289b7ec6, _S31), b);
  d = sum32(crotl32(d + _h(a, b, c) + buffer[0] + 0xeaa127fa, _S32), a);
  c = sum32(crotl32(c + _h(d, a, b) + buffer[3] + 0xd4ef3085, _S33), d);
  b = sum32(crotl32(b + _h(c, d, a) + buffer[6] + 0x04881d05, _S34), c);
  a = sum32(crotl32(a + _h(b, c, d) + buffer[9] + 0xd9d4d039, _S31), b);
  d = sum32(crotl32(d + _h(a, b, c) + buffer[12] + 0xe6db99e5, _S32), a);
  c = sum32(crotl32(c + _h(d, a, b) + buffer[15] + 0x1fa27cf8, _S33), d);
  b = sum32(crotl32(b + _h(c, d, a) + buffer[2] + 0xc4ac5665, _S34), c);

  // Round 4 - K cycle, 16 time_S.
  a = sum32(crotl32(a + _k(b, c, d) + buffer[0] + 0xf4292244, _S41), b);
  d = sum32(crotl32(d + _k(a, b, c) + buffer[7] + 0x432aff97, _S42), a);
  c = sum32(crotl32(c + _k(d, a, b) + buffer[14] + 0xab9423a7, _S43), d);
  b = sum32(crotl32(b + _k(c, d, a) + buffer[5] + 0xfc93a039, _S44), c);
  a = sum32(crotl32(a + _k(b, c, d) + buffer[12] + 0x655b59c3, _S41), b);
  d = sum32(crotl32(d + _k(a, b, c) + buffer[3] + 0x8f0ccc92, _S42), a);
  c = sum32(crotl32(c + _k(d, a, b) + buffer[10] + 0xffeff47d, _S43), d);
  b = sum32(crotl32(b + _k(c, d, a) + buffer[1] + 0x85845dd1, _S44), c);
  a = sum32(crotl32(a + _k(b, c, d) + buffer[8] + 0x6fa87e4f, _S41), b);
  d = sum32(crotl32(d + _k(a, b, c) + buffer[15] + 0xfe2ce6e0, _S42), a);
  c = sum32(crotl32(c + _k(d, a, b) + buffer[6] + 0xa3014314, _S43), d);
  b = sum32(crotl32(b + _k(c, d, a) + buffer[13] + 0x4e0811a1, _S44), c);
  a = sum32(crotl32(a + _k(b, c, d) + buffer[4] + 0xf7537e82, _S41), b);
  d = sum32(crotl32(d + _k(a, b, c) + buffer[11] + 0xbd3af235, _S42), a);
  c = sum32(crotl32(c + _k(d, a, b) + buffer[2] + 0x2ad7d2bb, _S43), d);
  b = sum32(crotl32(b + _k(c, d, a) + buffer[9] + 0xeb86d391, _S44), c);

  state[0] = clip32(state[0] + a);
  state[1] = clip32(state[1] + b);
  state[2] = clip32(state[2] + c);
  state[3] = clip32(state[3] + d);
}