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// Copyright 2014 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-512 cryptographic hash.
*
* Usage:
* var sha512 = new goog.crypt.Sha512();
* sha512.update(bytes);
* var hash = sha512.digest();
*
* @author fy@google.com (Frank Yellin)
*/
goog.provide('goog.crypt.Sha512');
goog.require('goog.crypt.Sha2_64bit');
/**
* Constructs a SHA-512 cryptographic hash.
*
* @constructor
* @extends {goog.crypt.Sha2_64bit}
* @final
* @struct
*/
goog.crypt.Sha512 = function() {
goog.crypt.Sha512.base(
this, 'constructor', 8 /* numHashBlocks */,
goog.crypt.Sha512.INIT_HASH_BLOCK_);
};
goog.inherits(goog.crypt.Sha512, goog.crypt.Sha2_64bit);
/** @private {!Array<number>} */
goog.crypt.Sha512.INIT_HASH_BLOCK_ = [
// Section 5.3.5 of
// csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
0x6a09e667, 0xf3bcc908, // H0
0xbb67ae85, 0x84caa73b, // H1
0x3c6ef372, 0xfe94f82b, // H2
0xa54ff53a, 0x5f1d36f1, // H3
0x510e527f, 0xade682d1, // H4
0x9b05688c, 0x2b3e6c1f, // H5
0x1f83d9ab, 0xfb41bd6b, // H6
0x5be0cd19, 0x137e2179 // H7
];
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