browser.js 2.7 KB

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  1. (function() {
  2. var nodeEnv = typeof require !== 'undefined' && typeof process !== 'undefined';
  3. var __module = nodeEnv ? module : {exports:{}};
  4. var __filename = 'preview-scripts/__node_modules/create-hmac/browser.js';
  5. var __require = nodeEnv ? function (request) {
  6. return cc.require(request);
  7. } : function (request) {
  8. return __quick_compile_project__.require(request, __filename);
  9. };
  10. function __define (exports, require, module) {
  11. if (!nodeEnv) {__quick_compile_project__.registerModule(__filename, module);}'use strict'
  12. var inherits = require('inherits')
  13. var Legacy = require('./legacy')
  14. var Base = require('cipher-base')
  15. var Buffer = require('safe-buffer').Buffer
  16. var md5 = require('create-hash/md5')
  17. var RIPEMD160 = require('ripemd160')
  18. var sha = require('sha.js')
  19. var ZEROS = Buffer.alloc(128)
  20. function Hmac (alg, key) {
  21. Base.call(this, 'digest')
  22. if (typeof key === 'string') {
  23. key = Buffer.from(key)
  24. }
  25. var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64
  26. this._alg = alg
  27. this._key = key
  28. if (key.length > blocksize) {
  29. var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
  30. key = hash.update(key).digest()
  31. } else if (key.length < blocksize) {
  32. key = Buffer.concat([key, ZEROS], blocksize)
  33. }
  34. var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
  35. var opad = this._opad = Buffer.allocUnsafe(blocksize)
  36. for (var i = 0; i < blocksize; i++) {
  37. ipad[i] = key[i] ^ 0x36
  38. opad[i] = key[i] ^ 0x5C
  39. }
  40. this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
  41. this._hash.update(ipad)
  42. }
  43. inherits(Hmac, Base)
  44. Hmac.prototype._update = function (data) {
  45. this._hash.update(data)
  46. }
  47. Hmac.prototype._final = function () {
  48. var h = this._hash.digest()
  49. var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
  50. return hash.update(this._opad).update(h).digest()
  51. }
  52. module.exports = function createHmac (alg, key) {
  53. alg = alg.toLowerCase()
  54. if (alg === 'rmd160' || alg === 'ripemd160') {
  55. return new Hmac('rmd160', key)
  56. }
  57. if (alg === 'md5') {
  58. return new Legacy(md5, key)
  59. }
  60. return new Hmac(alg, key)
  61. }
  62. }
  63. if (nodeEnv) {
  64. __define(__module.exports, __require, __module);
  65. }
  66. else {
  67. __quick_compile_project__.registerModuleFunc(__filename, function () {
  68. __define(__module.exports, __require, __module);
  69. });
  70. }
  71. })();