/** * [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;      });    }  }})();