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- (function() {
- var nodeEnv = typeof require !== 'undefined' && typeof process !== 'undefined';
- var __module = nodeEnv ? module : {exports:{}};
- var __filename = 'preview-scripts/__node_modules/create-hmac/browser.js';
- var __require = nodeEnv ? function (request) {
- return cc.require(request);
- } : function (request) {
- return __quick_compile_project__.require(request, __filename);
- };
- function __define (exports, require, module) {
- if (!nodeEnv) {__quick_compile_project__.registerModule(__filename, module);}'use strict'
- var inherits = require('inherits')
- var Legacy = require('./legacy')
- var Base = require('cipher-base')
- var Buffer = require('safe-buffer').Buffer
- var md5 = require('create-hash/md5')
- var RIPEMD160 = require('ripemd160')
- var sha = require('sha.js')
- var ZEROS = Buffer.alloc(128)
- function Hmac (alg, key) {
- Base.call(this, 'digest')
- if (typeof key === 'string') {
- key = Buffer.from(key)
- }
- var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64
- this._alg = alg
- this._key = key
- if (key.length > blocksize) {
- var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
- key = hash.update(key).digest()
- } else if (key.length < blocksize) {
- key = Buffer.concat([key, ZEROS], blocksize)
- }
- var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
- var opad = this._opad = Buffer.allocUnsafe(blocksize)
- for (var i = 0; i < blocksize; i++) {
- ipad[i] = key[i] ^ 0x36
- opad[i] = key[i] ^ 0x5C
- }
- this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
- this._hash.update(ipad)
- }
- inherits(Hmac, Base)
- Hmac.prototype._update = function (data) {
- this._hash.update(data)
- }
- Hmac.prototype._final = function () {
- var h = this._hash.digest()
- var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
- return hash.update(this._opad).update(h).digest()
- }
- module.exports = function createHmac (alg, key) {
- alg = alg.toLowerCase()
- if (alg === 'rmd160' || alg === 'ripemd160') {
- return new Hmac('rmd160', key)
- }
- if (alg === 'md5') {
- return new Legacy(md5, key)
- }
- return new Hmac(alg, key)
- }
- }
- if (nodeEnv) {
- __define(__module.exports, __require, __module);
- }
- else {
- __quick_compile_project__.registerModuleFunc(__filename, function () {
- __define(__module.exports, __require, __module);
- });
- }
- })();
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