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42 lines
1.1 KiB
42 lines
1.1 KiB
2 years ago
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import { inherits as inherits$0 } from "util";
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import Sha256 from "./sha256";
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import Hash from "./hash";
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/**
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* A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
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* in FIPS 180-2
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* Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
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* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
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*
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*/
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var inherits = { inherits: inherits$0 }.inherits;
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var W = new Array(64);
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function Sha224() {
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this.init();
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this._w = W; // new Array(64)
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Hash.call(this, 64, 56);
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}
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inherits(Sha224, Sha256);
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Sha224.prototype.init = function () {
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this._a = 0xc1059ed8;
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this._b = 0x367cd507;
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this._c = 0x3070dd17;
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this._d = 0xf70e5939;
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this._e = 0xffc00b31;
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this._f = 0x68581511;
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this._g = 0x64f98fa7;
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this._h = 0xbefa4fa4;
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return this;
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};
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Sha224.prototype._hash = function () {
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var H = Buffer.allocUnsafe(28);
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H.writeInt32BE(this._a, 0);
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H.writeInt32BE(this._b, 4);
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H.writeInt32BE(this._c, 8);
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H.writeInt32BE(this._d, 12);
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H.writeInt32BE(this._e, 16);
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H.writeInt32BE(this._f, 20);
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H.writeInt32BE(this._g, 24);
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return H;
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};
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export default Sha224;
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