Convert crypto libraries to use Uint32Lists.

pkg/crypto/lib/src/sha256.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of crypto;
 
 /**
  * SHA256 hash function implementation.
  */
 class SHA256 extends _HashBase {
-  final List<int> _w;
+  final Uint32List _w;
 
   // Construct a SHA256 hasher object.
-  SHA256() : _w = new List(64), super(16, 8, true) {
+  SHA256() : _w = new Uint32List(64), super(16, 8, true) {
     // Initial value of the hash parts. First 32 bits of the fractional parts
     // of the square roots of the first 8 prime numbers.
     _h[0] = 0x6a09e667;
     _h[1] = 0xbb67ae85;
     _h[2] = 0x3c6ef372;
     _h[3] = 0xa54ff53a;
     _h[4] = 0x510e527f;
     _h[5] = 0x9b05688c;
     _h[6] = 0x1f83d9ab;
     _h[7] = 0x5be0cd19;
@@ skipping 25 matching lines @@
   _rotr32(n, x) => (x >> n) | ((x << (32 - n)) & _MASK_32);
   _ch(x, y, z) => (x & y) ^ ((~x & _MASK_32) & z);
   _maj(x, y, z) => (x & y) ^ (x & z) ^ (y & z);
   _bsig0(x) => _rotr32(2, x) ^ _rotr32(13, x) ^ _rotr32(22, x);
   _bsig1(x) => _rotr32(6, x) ^ _rotr32(11, x) ^ _rotr32(25, x);
   _ssig0(x) => _rotr32(7, x) ^ _rotr32(18, x) ^ (x >> 3);
   _ssig1(x) => _rotr32(17, x) ^ _rotr32(19, x) ^ (x >> 10);
 
   // Compute one iteration of the SHA256 algorithm with a chunk of
   // 16 32-bit pieces.
-  void _updateHash(List<int> M) {
+  void _updateHash(Uint32List M) {
     assert(M.length == 16);
 
     // Prepare message schedule.
     var i = 0;
     for (; i < 16; i++) {
       _w[i] = M[i];
     }
     for (; i < 64; i++) {
       _w[i] = _add32(_add32(_ssig1(_w[i - 2]), _w[i - 7]),
                      _add32(_ssig0(_w[i - 15]), _w[i - 16]));
@@ skipping 27 matching lines @@
     _h[0] = _add32(a, _h[0]);
     _h[1] = _add32(b, _h[1]);
     _h[2] = _add32(c, _h[2]);
     _h[3] = _add32(d, _h[3]);
     _h[4] = _add32(e, _h[4]);
     _h[5] = _add32(f, _h[5]);
     _h[6] = _add32(g, _h[6]);
     _h[7] = _add32(h, _h[7]);
   }
 }