Haketilo

/**

 * [js-sha256]{@link https://github.com/emn178/js-sha256/}

 *

 * @version 0.9.0

 *

 * Copyright (c) 2014-2017 Chen, Yi-Cyuan

 *

 * MIT License

 *

 * Permission is hereby granted, free of charge, to any person obtaining

 * a copy of this software and associated documentation files (the

 * "Software"), to deal in the Software without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sublicense, and/or sell copies of the Software, and to

 * permit persons to whom the Software is furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

var fake_window = {};

var ERROR = 'input is invalid type';

var WINDOW = typeof fake_window === 'object';

var root = /*WINDOW ? window : {}*/ fake_window;

if (root.JS_SHA256_NO_WINDOW) {

    WINDOW = false;

}

var WEB_WORKER = !WINDOW && typeof self === 'object';

var NODE_JS = !root.JS_SHA256_NO_NODE_JS && typeof process === 'object' && process.versions && process.versions.node;

if (NODE_JS) {

    root = global;

} else if (WEB_WORKER) {

    root = self;

}

var COMMON_JS = !root.JS_SHA256_NO_COMMON_JS && typeof module === 'object' && module.exports;

var AMD = typeof define === 'function' && define.amd;

var ARRAY_BUFFER = !root.JS_SHA256_NO_ARRAY_BUFFER && typeof ArrayBuffer !== 'undefined';

var HEX_CHARS = '0123456789abcdef'.split('');

var EXTRA = [-2147483648, 8388608, 32768, 128];

var SHIFT = [24, 16, 8, 0];

var K = [

    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,

    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,

    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,

    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,

    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,

    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,

    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,

    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2

];

var OUTPUT_TYPES = ['hex', 'array', 'digest', 'arrayBuffer'];

var blocks = [];

if (root.JS_SHA256_NO_NODE_JS || !Array.isArray) {

    Array.isArray = function (obj) {

	return Object.prototype.toString.call(obj) === '[object Array]';

    };

}

if (ARRAY_BUFFER && (root.JS_SHA256_NO_ARRAY_BUFFER_IS_VIEW || !ArrayBuffer.isView)) {

    ArrayBuffer.isView = function (obj) {

	return typeof obj === 'object' && obj.buffer && obj.buffer.constructor === ArrayBuffer;

    };

}

var createOutputMethod = function (outputType, is224) {

    return function (message) {

	return new Sha256(is224, true).update(message)[outputType]();

    };

};

var createMethod = function (is224) {

    var method = createOutputMethod('hex', is224);

    if (NODE_JS) {

	method = nodeWrap(method, is224);

    }

    method.create = function () {

	return new Sha256(is224);

    };

    method.update = function (message) {

	return method.create().update(message);

    };

    for (var i = 0; i < OUTPUT_TYPES.length; ++i) {

	var type = OUTPUT_TYPES[i];

	method[type] = createOutputMethod(type, is224);

    }

    return method;

};

var nodeWrap = function (method, is224) {

    var crypto = eval("require('crypto')");

    var Buffer = eval("require('buffer').Buffer");

    var algorithm = is224 ? 'sha224' : 'sha256';

    var nodeMethod = function (message) {

	if (typeof message === 'string') {

            return crypto.createHash(algorithm).update(message, 'utf8').digest('hex');

	} else {

            if (message === null || message === undefined) {

		throw new Error(ERROR);

            } else if (message.constructor === ArrayBuffer) {

		message = new Uint8Array(message);

            }

	}

	if (Array.isArray(message) || ArrayBuffer.isView(message) ||

            message.constructor === Buffer) {

            return crypto.createHash(algorithm).update(new Buffer(message)).digest('hex');

	} else {

            return method(message);

	}

    };

    return nodeMethod;

};

var createHmacOutputMethod = function (outputType, is224) {

    return function (key, message) {

	return new HmacSha256(key, is224, true).update(message)[outputType]();

    };

};

var createHmacMethod = function (is224) {

    var method = createHmacOutputMethod('hex', is224);

    method.create = function (key) {

	return new HmacSha256(key, is224);

    };

    method.update = function (key, message) {

	return method.create(key).update(message);

    };

    for (var i = 0; i < OUTPUT_TYPES.length; ++i) {

	var type = OUTPUT_TYPES[i];

	method[type] = createHmacOutputMethod(type, is224);

    }

    return method;

};

function Sha256(is224, sharedMemory) {

    if (sharedMemory) {

	blocks[0] = blocks[16] = blocks[1] = blocks[2] = blocks[3] =

            blocks[4] = blocks[5] = blocks[6] = blocks[7] =

            blocks[8] = blocks[9] = blocks[10] = blocks[11] =

            blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;

	this.blocks = blocks;

    } else {

	this.blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];

    }

    if (is224) {

	this.h0 = 0xc1059ed8;

	this.h1 = 0x367cd507;

	this.h2 = 0x3070dd17;

	this.h3 = 0xf70e5939;

	this.h4 = 0xffc00b31;

	this.h5 = 0x68581511;

	this.h6 = 0x64f98fa7;

	this.h7 = 0xbefa4fa4;

    } else { // 256

	this.h0 = 0x6a09e667;

	this.h1 = 0xbb67ae85;

	this.h2 = 0x3c6ef372;

	this.h3 = 0xa54ff53a;

	this.h4 = 0x510e527f;

	this.h5 = 0x9b05688c;

	this.h6 = 0x1f83d9ab;

	this.h7 = 0x5be0cd19;

    }

    this.block = this.start = this.bytes = this.hBytes = 0;

    this.finalized = this.hashed = false;

    this.first = true;

    this.is224 = is224;

}

Sha256.prototype.update = function (message) {

    if (this.finalized) {

	return;

    }

    var notString, type = typeof message;

    if (type !== 'string') {

	if (type === 'object') {

            if (message === null) {

		throw new Error(ERROR);

            } else if (ARRAY_BUFFER && message.constructor === ArrayBuffer) {

		message = new Uint8Array(message);

            } else if (!Array.isArray(message)) {

		if (!ARRAY_BUFFER || !ArrayBuffer.isView(message)) {

		    throw new Error(ERROR);

		}

            }

	} else {

            throw new Error(ERROR);

	}

	notString = true;

    }

    var code, index = 0, i, length = message.length, blocks = this.blocks;

    while (index < length) {

	if (this.hashed) {

            this.hashed = false;

            blocks[0] = this.block;

            blocks[16] = blocks[1] = blocks[2] = blocks[3] =

		blocks[4] = blocks[5] = blocks[6] = blocks[7] =

		blocks[8] = blocks[9] = blocks[10] = blocks[11] =

		blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;

	}

	if (notString) {

            for (i = this.start; index < length && i < 64; ++index) {

		blocks[i >> 2] |= message[index] << SHIFT[i++ & 3];

            }

	} else {

            for (i = this.start; index < length && i < 64; ++index) {

		code = message.charCodeAt(index);

		if (code < 0x80) {

		    blocks[i >> 2] |= code << SHIFT[i++ & 3];

		} else if (code < 0x800) {

		    blocks[i >> 2] |= (0xc0 | (code >> 6)) << SHIFT[i++ & 3];

		    blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];

		} else if (code < 0xd800 || code >= 0xe000) {

		    blocks[i >> 2] |= (0xe0 | (code >> 12)) << SHIFT[i++ & 3];

		    blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];

		    blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];

		} else {

		    code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));

		    blocks[i >> 2] |= (0xf0 | (code >> 18)) << SHIFT[i++ & 3];

		    blocks[i >> 2] |= (0x80 | ((code >> 12) & 0x3f)) << SHIFT[i++ & 3];

		    blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];

		    blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];

		}

            }

	}

	this.lastByteIndex = i;

	this.bytes += i - this.start;

	if (i >= 64) {

            this.block = blocks[16];

            this.start = i - 64;

            this.hash();

            this.hashed = true;

	} else {

            this.start = i;

	}

    }

    if (this.bytes > 4294967295) {

	this.hBytes += this.bytes / 4294967296 << 0;

	this.bytes = this.bytes % 4294967296;

    }

    return this;

};

Sha256.prototype.finalize = function () {

    if (this.finalized) {

	return;

    }

    this.finalized = true;

    var blocks = this.blocks, i = this.lastByteIndex;

    blocks[16] = this.block;

    blocks[i >> 2] |= EXTRA[i & 3];

    this.block = blocks[16];

    if (i >= 56) {

	if (!this.hashed) {

            this.hash();

	}

	blocks[0] = this.block;

	blocks[16] = blocks[1] = blocks[2] = blocks[3] =

            blocks[4] = blocks[5] = blocks[6] = blocks[7] =

            blocks[8] = blocks[9] = blocks[10] = blocks[11] =

            blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;

    }

    blocks[14] = this.hBytes << 3 | this.bytes >>> 29;

    blocks[15] = this.bytes << 3;

    this.hash();

};

Sha256.prototype.hash = function () {

    var a = this.h0, b = this.h1, c = this.h2, d = this.h3, e = this.h4, f = this.h5, g = this.h6,

	h = this.h7, blocks = this.blocks, j, s0, s1, maj, t1, t2, ch, ab, da, cd, bc;

    for (j = 16; j < 64; ++j) {

	// rightrotate

	t1 = blocks[j - 15];

	s0 = ((t1 >>> 7) | (t1 << 25)) ^ ((t1 >>> 18) | (t1 << 14)) ^ (t1 >>> 3);

	t1 = blocks[j - 2];

	s1 = ((t1 >>> 17) | (t1 << 15)) ^ ((t1 >>> 19) | (t1 << 13)) ^ (t1 >>> 10);

	blocks[j] = blocks[j - 16] + s0 + blocks[j - 7] + s1 << 0;

    }

    bc = b & c;

    for (j = 0; j < 64; j += 4) {

	if (this.first) {

            if (this.is224) {

		ab = 300032;

		t1 = blocks[0] - 1413257819;

		h = t1 - 150054599 << 0;

		d = t1 + 24177077 << 0;

            } else {

		ab = 704751109;

		t1 = blocks[0] - 210244248;

		h = t1 - 1521486534 << 0;

		d = t1 + 143694565 << 0;

            }

            this.first = false;

	} else {

            s0 = ((a >>> 2) | (a << 30)) ^ ((a >>> 13) | (a << 19)) ^ ((a >>> 22) | (a << 10));

            s1 = ((e >>> 6) | (e << 26)) ^ ((e >>> 11) | (e << 21)) ^ ((e >>> 25) | (e << 7));

            ab = a & b;

            maj = ab ^ (a & c) ^ bc;

            ch = (e & f) ^ (~e & g);

            t1 = h + s1 + ch + K[j] + blocks[j];

            t2 = s0 + maj;

            h = d + t1 << 0;

            d = t1 + t2 << 0;

	}

	s0 = ((d >>> 2) | (d << 30)) ^ ((d >>> 13) | (d << 19)) ^ ((d >>> 22) | (d << 10));

	s1 = ((h >>> 6) | (h << 26)) ^ ((h >>> 11) | (h << 21)) ^ ((h >>> 25) | (h << 7));

	da = d & a;

	maj = da ^ (d & b) ^ ab;

	ch = (h & e) ^ (~h & f);

	t1 = g + s1 + ch + K[j + 1] + blocks[j + 1];

	t2 = s0 + maj;

	g = c + t1 << 0;

	c = t1 + t2 << 0;

	s0 = ((c >>> 2) | (c << 30)) ^ ((c >>> 13) | (c << 19)) ^ ((c >>> 22) | (c << 10));

	s1 = ((g >>> 6) | (g << 26)) ^ ((g >>> 11) | (g << 21)) ^ ((g >>> 25) | (g << 7));

	cd = c & d;

	maj = cd ^ (c & a) ^ da;

	ch = (g & h) ^ (~g & e);

	t1 = f + s1 + ch + K[j + 2] + blocks[j + 2];

	t2 = s0 + maj;

	f = b + t1 << 0;

	b = t1 + t2 << 0;

	s0 = ((b >>> 2) | (b << 30)) ^ ((b >>> 13) | (b << 19)) ^ ((b >>> 22) | (b << 10));

	s1 = ((f >>> 6) | (f << 26)) ^ ((f >>> 11) | (f << 21)) ^ ((f >>> 25) | (f << 7));

	bc = b & c;

	maj = bc ^ (b & d) ^ cd;

	ch = (f & g) ^ (~f & h);

	t1 = e + s1 + ch + K[j + 3] + blocks[j + 3];

	t2 = s0 + maj;

	e = a + t1 << 0;

	a = t1 + t2 << 0;

    }

    this.h0 = this.h0 + a << 0;

    this.h1 = this.h1 + b << 0;

    this.h2 = this.h2 + c << 0;

    this.h3 = this.h3 + d << 0;

    this.h4 = this.h4 + e << 0;

    this.h5 = this.h5 + f << 0;

    this.h6 = this.h6 + g << 0;

    this.h7 = this.h7 + h << 0;

};

Sha256.prototype.hex = function () {

    this.finalize();

    var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3, h4 = this.h4, h5 = this.h5,

	h6 = this.h6, h7 = this.h7;

    var hex = HEX_CHARS[(h0 >> 28) & 0x0F] + HEX_CHARS[(h0 >> 24) & 0x0F] +

	HEX_CHARS[(h0 >> 20) & 0x0F] + HEX_CHARS[(h0 >> 16) & 0x0F] +

	HEX_CHARS[(h0 >> 12) & 0x0F] + HEX_CHARS[(h0 >> 8) & 0x0F] +

	HEX_CHARS[(h0 >> 4) & 0x0F] + HEX_CHARS[h0 & 0x0F] +

	HEX_CHARS[(h1 >> 28) & 0x0F] + HEX_CHARS[(h1 >> 24) & 0x0F] +

	HEX_CHARS[(h1 >> 20) & 0x0F] + HEX_CHARS[(h1 >> 16) & 0x0F] +

	HEX_CHARS[(h1 >> 12) & 0x0F] + HEX_CHARS[(h1 >> 8) & 0x0F] +

	HEX_CHARS[(h1 >> 4) & 0x0F] + HEX_CHARS[h1 & 0x0F] +

	HEX_CHARS[(h2 >> 28) & 0x0F] + HEX_CHARS[(h2 >> 24) & 0x0F] +

	HEX_CHARS[(h2 >> 20) & 0x0F] + HEX_CHARS[(h2 >> 16) & 0x0F] +

	HEX_CHARS[(h2 >> 12) & 0x0F] + HEX_CHARS[(h2 >> 8) & 0x0F] +

	HEX_CHARS[(h2 >> 4) & 0x0F] + HEX_CHARS[h2 & 0x0F] +

	HEX_CHARS[(h3 >> 28) & 0x0F] + HEX_CHARS[(h3 >> 24) & 0x0F] +

	HEX_CHARS[(h3 >> 20) & 0x0F] + HEX_CHARS[(h3 >> 16) & 0x0F] +

	HEX_CHARS[(h3 >> 12) & 0x0F] + HEX_CHARS[(h3 >> 8) & 0x0F] +

	HEX_CHARS[(h3 >> 4) & 0x0F] + HEX_CHARS[h3 & 0x0F] +

	HEX_CHARS[(h4 >> 28) & 0x0F] + HEX_CHARS[(h4 >> 24) & 0x0F] +

	HEX_CHARS[(h4 >> 20) & 0x0F] + HEX_CHARS[(h4 >> 16) & 0x0F] +

	HEX_CHARS[(h4 >> 12) & 0x0F] + HEX_CHARS[(h4 >> 8) & 0x0F] +

	HEX_CHARS[(h4 >> 4) & 0x0F] + HEX_CHARS[h4 & 0x0F] +

	HEX_CHARS[(h5 >> 28) & 0x0F] + HEX_CHARS[(h5 >> 24) & 0x0F] +

	HEX_CHARS[(h5 >> 20) & 0x0F] + HEX_CHARS[(h5 >> 16) & 0x0F] +

	HEX_CHARS[(h5 >> 12) & 0x0F] + HEX_CHARS[(h5 >> 8) & 0x0F] +

	HEX_CHARS[(h5 >> 4) & 0x0F] + HEX_CHARS[h5 & 0x0F] +

	HEX_CHARS[(h6 >> 28) & 0x0F] + HEX_CHARS[(h6 >> 24) & 0x0F] +

	HEX_CHARS[(h6 >> 20) & 0x0F] + HEX_CHARS[(h6 >> 16) & 0x0F] +

	HEX_CHARS[(h6 >> 12) & 0x0F] + HEX_CHARS[(h6 >> 8) & 0x0F] +

	HEX_CHARS[(h6 >> 4) & 0x0F] + HEX_CHARS[h6 & 0x0F];

    if (!this.is224) {

	hex += HEX_CHARS[(h7 >> 28) & 0x0F] + HEX_CHARS[(h7 >> 24) & 0x0F] +

            HEX_CHARS[(h7 >> 20) & 0x0F] + HEX_CHARS[(h7 >> 16) & 0x0F] +

            HEX_CHARS[(h7 >> 12) & 0x0F] + HEX_CHARS[(h7 >> 8) & 0x0F] +

            HEX_CHARS[(h7 >> 4) & 0x0F] + HEX_CHARS[h7 & 0x0F];

    }

    return hex;

};

Sha256.prototype.toString = Sha256.prototype.hex;

Sha256.prototype.digest = function () {

    this.finalize();

    var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3, h4 = this.h4, h5 = this.h5,

	h6 = this.h6, h7 = this.h7;

    var arr = [

	(h0 >> 24) & 0xFF, (h0 >> 16) & 0xFF, (h0 >> 8) & 0xFF, h0 & 0xFF,

	(h1 >> 24) & 0xFF, (h1 >> 16) & 0xFF, (h1 >> 8) & 0xFF, h1 & 0xFF,

	(h2 >> 24) & 0xFF, (h2 >> 16) & 0xFF, (h2 >> 8) & 0xFF, h2 & 0xFF,

	(h3 >> 24) & 0xFF, (h3 >> 16) & 0xFF, (h3 >> 8) & 0xFF, h3 & 0xFF,

	(h4 >> 24) & 0xFF, (h4 >> 16) & 0xFF, (h4 >> 8) & 0xFF, h4 & 0xFF,

	(h5 >> 24) & 0xFF, (h5 >> 16) & 0xFF, (h5 >> 8) & 0xFF, h5 & 0xFF,

	(h6 >> 24) & 0xFF, (h6 >> 16) & 0xFF, (h6 >> 8) & 0xFF, h6 & 0xFF

    ];

    if (!this.is224) {

	arr.push((h7 >> 24) & 0xFF, (h7 >> 16) & 0xFF, (h7 >> 8) & 0xFF, h7 & 0xFF);

    }

    return arr;

};

Sha256.prototype.array = Sha256.prototype.digest;

Sha256.prototype.arrayBuffer = function () {

    this.finalize();

    var buffer = new ArrayBuffer(this.is224 ? 28 : 32);

    var dataView = new DataView(buffer);

    dataView.setUint32(0, this.h0);

    dataView.setUint32(4, this.h1);

    dataView.setUint32(8, this.h2);

    dataView.setUint32(12, this.h3);

    dataView.setUint32(16, this.h4);

    dataView.setUint32(20, this.h5);

    dataView.setUint32(24, this.h6);

    if (!this.is224) {

	dataView.setUint32(28, this.h7);

    }

    return buffer;

};

function HmacSha256(key, is224, sharedMemory) {

    var i, type = typeof key;

    if (type === 'string') {

	var bytes = [], length = key.length, index = 0, code;

	for (i = 0; i < length; ++i) {

            code = key.charCodeAt(i);

            if (code < 0x80) {

		bytes[index++] = code;

            } else if (code < 0x800) {

		bytes[index++] = (0xc0 | (code >> 6));

		bytes[index++] = (0x80 | (code & 0x3f));

            } else if (code < 0xd800 || code >= 0xe000) {

		bytes[index++] = (0xe0 | (code >> 12));

		bytes[index++] = (0x80 | ((code >> 6) & 0x3f));

		bytes[index++] = (0x80 | (code & 0x3f));

            } else {

		code = 0x10000 + (((code & 0x3ff) << 10) | (key.charCodeAt(++i) & 0x3ff));

		bytes[index++] = (0xf0 | (code >> 18));

		bytes[index++] = (0x80 | ((code >> 12) & 0x3f));

		bytes[index++] = (0x80 | ((code >> 6) & 0x3f));

		bytes[index++] = (0x80 | (code & 0x3f));

            }

	}

	key = bytes;

    } else {

	if (type === 'object') {

            if (key === null) {

		throw new Error(ERROR);

            } else if (ARRAY_BUFFER && key.constructor === ArrayBuffer) {

		key = new Uint8Array(key);

            } else if (!Array.isArray(key)) {

		if (!ARRAY_BUFFER || !ArrayBuffer.isView(key)) {

		    throw new Error(ERROR);

		}

            }

	} else {

            throw new Error(ERROR);

	}

    }

    if (key.length > 64) {

	key = (new Sha256(is224, true)).update(key).array();

    }

    var oKeyPad = [], iKeyPad = [];

    for (i = 0; i < 64; ++i) {

	var b = key[i] || 0;

	oKeyPad[i] = 0x5c ^ b;

	iKeyPad[i] = 0x36 ^ b;

    }

    Sha256.call(this, is224, sharedMemory);

    this.update(iKeyPad);

    this.oKeyPad = oKeyPad;

    this.inner = true;

    this.sharedMemory = sharedMemory;

}

HmacSha256.prototype = new Sha256();

HmacSha256.prototype.finalize = function () {

    Sha256.prototype.finalize.call(this);

    if (this.inner) {

	this.inner = false;

	var innerHash = this.array();

	Sha256.call(this, this.is224, this.sharedMemory);

	this.update(this.oKeyPad);

	this.update(innerHash);

	Sha256.prototype.finalize.call(this);

    }

};

var exports = createMethod();

exports.sha256 = exports;

exports.sha224 = createMethod(true);

exports.sha256.hmac = createHmacMethod();

exports.sha224.hmac = createHmacMethod(true);

if (COMMON_JS) {

    module.exports = exports;

} else {

    root.sha256 = exports.sha256;

    root.sha224 = exports.sha224;

    if (AMD) {

	define(function () {

            return exports;

	});

    }

}

#EXPORT  fake_window.sha256  AS sha256