Remove library dart:crypto

sdk/lib/crypto/sha1.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 dart.crypto;
-
-// The SHA1 hasher is used to compute an SHA1 message digest.
-class _SHA1 extends _HashBase implements SHA1 {
-  // Construct a SHA1 hasher object.
-  _SHA1() : _w = new List(80), super(16, 5, true) {
-    _h[0] = 0x67452301;
-    _h[1] = 0xEFCDAB89;
-    _h[2] = 0x98BADCFE;
-    _h[3] = 0x10325476;
-    _h[4] = 0xC3D2E1F0;
-  }
-
-  // Returns a new instance of this Hash.
-  SHA1 newInstance() {
-    return new SHA1();
-  }
-
-  // Compute one iteration of the SHA1 algorithm with a chunk of
-  // 16 32-bit pieces.
-  void _updateHash(List<int> m) {
-    assert(m.length == 16);
-
-    var a = _h[0];
-    var b = _h[1];
-    var c = _h[2];
-    var d = _h[3];
-    var e = _h[4];
-
-    for (var i = 0; i < 80; i++) {
-      if (i < 16) {
-        _w[i] = m[i];
-      } else {
-        var n = _w[i - 3] ^ _w[i - 8] ^ _w[i - 14] ^ _w[i - 16];
-        _w[i] = _rotl32(n, 1);
-      }
-      var t = _add32(_add32(_rotl32(a, 5), e), _w[i]);
-      if (i < 20) {
-        t = _add32(_add32(t, (b & c) | (~b & d)), 0x5A827999);
-      } else if (i < 40) {
-        t = _add32(_add32(t, (b ^ c ^ d)), 0x6ED9EBA1);
-      } else if (i < 60) {
-        t = _add32(_add32(t, (b & c) | (b & d) | (c & d)), 0x8F1BBCDC);
-      } else {
-        t = _add32(_add32(t, b ^ c ^ d), 0xCA62C1D6);
-      }
-
-      e = d;
-      d = c;
-      c = _rotl32(b, 30);
-      b = a;
-      a = t & _MASK_32;
-    }
-
-    _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]);
-  }
-
-  List<int> _w;
-}