@ivujs/i-utils/dist/cjs/crypto/sha/sha256/sha256.cjs

前端模块化 JavaScript 工具库

'use strict';

/**
 * [js-sha256]{@link https://github.com/emn178/js-sha256}
 *
 * @version 0.11.0
 * @author Chen, Yi-Cyuan [emn178@gmail.com]
 * @copyright Chen, Yi-Cyuan 2014-2024
 * @license MIT
 */
/* jslint bitwise: true */

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 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 = require("crypto");
  var Buffer = require("buffer").Buffer;
  var algorithm = is224 ? "sha224" : "sha256";
  var bufferFrom;
  if (Buffer.from && !root.JS_SHA256_NO_BUFFER_FROM) {
    bufferFrom = Buffer.from;
  } else {
    bufferFrom = function (message) {
      return new Buffer(message);
    };
  }
  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(bufferFrom(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;
      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.chromeBugWorkAround = true;
  }

  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);
  }
};

/* 以下是内部实现需要的es模块化导出方法 */
const sha256 = createMethod();
const sha224 = createMethod(true);
const sha256_hmac = createHmacMethod();
const sha224_hmac = createHmacMethod(true);

exports.sha224 = sha224;
exports.sha224_hmac = sha224_hmac;
exports.sha256 = sha256;
exports.sha256_hmac = sha256_hmac;