Index: sdk/lib/crypto/hmac.dart |
diff --git a/sdk/lib/crypto/hmac.dart b/sdk/lib/crypto/hmac.dart |
deleted file mode 100644 |
index 794746d299747d1cbd7e32bb52fe617956c8d308..0000000000000000000000000000000000000000 |
--- a/sdk/lib/crypto/hmac.dart |
+++ /dev/null |
@@ -1,84 +0,0 @@ |
-// 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; |
- |
-class _HMAC implements HMAC { |
- bool _isClosed = false; |
- |
- _HMAC(Hash this._hash, List<int> this._key) : _message = []; |
- |
- add(List<int> data) { |
- if (_isClosed) throw new StateError("HMAC is closed"); |
- _message.addAll(data); |
- } |
- |
- List<int> get digest { |
- var blockSize = _hash.blockSize; |
- |
- // Hash the key if it is longer than the block size of the hash. |
- if (_key.length > blockSize) { |
- _hash = _hash.newInstance(); |
- _hash.add(_key); |
- _key = _hash.close(); |
- } |
- |
- // Zero-pad the key until its size is equal to the block size of the hash. |
- if (_key.length < blockSize) { |
- var newKey = new List(blockSize); |
- newKey.setRange(0, _key.length, _key); |
- for (var i = _key.length; i < blockSize; i++) { |
- newKey[i] = 0; |
- } |
- _key = newKey; |
- } |
- |
- // Compute inner padding. |
- var padding = new List(blockSize); |
- for (var i = 0; i < blockSize; i++) { |
- padding[i] = 0x36 ^ _key[i]; |
- } |
- |
- // Inner hash computation. |
- _hash = _hash.newInstance(); |
- _hash.add(padding); |
- _hash.add(_message); |
- var innerHash = _hash.close(); |
- |
- // Compute outer padding. |
- for (var i = 0; i < blockSize; i++) { |
- padding[i] = 0x5c ^ _key[i]; |
- } |
- |
- // Outer hash computation which is the result. |
- _hash = _hash.newInstance(); |
- _hash.add(padding); |
- _hash.add(innerHash); |
- return _hash.close(); |
- } |
- |
- List<int> close() { |
- _isClosed = true; |
- return digest; |
- } |
- |
- bool verify(List<int> digest) { |
- var computedDigest = this.digest; |
- if (digest.length != computedDigest.length) { |
- throw new ArgumentError( |
- 'Invalid digest size: ${digest.length} in HMAC.verify. ' |
- 'Expected: ${_hash.blockSize}.'); |
- } |
- int result = 0; |
- for (var i = 0; i < digest.length; i++) { |
- result |= digest[i] ^ computedDigest[i]; |
- } |
- return result == 0; |
- } |
- |
- // HMAC internal state. |
- Hash _hash; |
- List<int> _key; |
- List<int> _message; |
-} |