/**
 * Source: https://github.com/emn178/js-sha256/blob/master/src/sha256.js
 *
 * This comment was added by Ryan Specialty Group.
 *
 * N.B.: THIS IMPLEMENTATION IS NOT INTENDED FOR SECURE CRYPTOGRAPHIC
 * OPERATIONS.  It is used as a seemingly faithful implementation of SHA256
 * not as a cryptographically secure hash, but as, simply, a hash function
 * with a uniform distribution.  This allows truncating to any length while
 * still maintaining that uniformity, which is important for avoiding
 * collisions.
 *
 * So, repeat: DO NOT USE FOR SENSITIVE CRYPTOGRAPHIC OPERATIONS.  This has
 * not been audited.
 */

/**
 * [js-sha256]{@link https://github.com/emn178/js-sha256}
 *
 * @version 0.9.0
 * @author Chen, Yi-Cyuan [emn178@gmail.com]
 * @copyright Chen, Yi-Cyuan 2014-2017
 * @license MIT
 */
/*jslint bitwise: true */
(function () {
	'use strict';

	var ERROR = 'input is invalid type';
	var WINDOW = typeof window === 'object';
	var root = WINDOW ? 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;
		});
	  }
	}
  })();