| // Copyright 2012 The Closure Library Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| /** |
| * @fileoverview SHA-256 cryptographic hash. |
| * |
| * Usage: |
| * var sha256 = new goog.crypt.Sha256(); |
| * sha256.update(bytes); |
| * var hash = sha256.digest(); |
| * |
| */ |
| |
| goog.provide('goog.crypt.Sha256'); |
| |
| goog.require('goog.crypt.Sha2'); |
| |
| |
| |
| /** |
| * SHA-256 cryptographic hash constructor. |
| * |
| * @constructor |
| * @extends {goog.crypt.Sha2} |
| * @final |
| * @struct |
| */ |
| goog.crypt.Sha256 = function() { |
| goog.crypt.Sha256.base(this, 'constructor', |
| 8, goog.crypt.Sha256.INIT_HASH_BLOCK_); |
| }; |
| goog.inherits(goog.crypt.Sha256, goog.crypt.Sha2); |
| |
| |
| /** @private {!Array<number>} */ |
| goog.crypt.Sha256.INIT_HASH_BLOCK_ = [ |
| 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, |
| 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19]; |