js-sha256源码

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