legacy.js 2.1 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/legacy.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 Buffer = require('safe-buffer').Buffer
  14. var Base = require('cipher-base')
  15. var ZEROS = Buffer.alloc(128)
  16. var blocksize = 64
  17. function Hmac (alg, key) {
  18. Base.call(this, 'digest')
  19. if (typeof key === 'string') {
  20. key = Buffer.from(key)
  21. }
  22. this._alg = alg
  23. this._key = key
  24. if (key.length > blocksize) {
  25. key = alg(key)
  26. } else if (key.length < blocksize) {
  27. key = Buffer.concat([key, ZEROS], blocksize)
  28. }
  29. var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
  30. var opad = this._opad = Buffer.allocUnsafe(blocksize)
  31. for (var i = 0; i < blocksize; i++) {
  32. ipad[i] = key[i] ^ 0x36
  33. opad[i] = key[i] ^ 0x5C
  34. }
  35. this._hash = [ipad]
  36. }
  37. inherits(Hmac, Base)
  38. Hmac.prototype._update = function (data) {
  39. this._hash.push(data)
  40. }
  41. Hmac.prototype._final = function () {
  42. var h = this._alg(Buffer.concat(this._hash))
  43. return this._alg(Buffer.concat([this._opad, h]))
  44. }
  45. module.exports = Hmac
  46. }
  47. if (nodeEnv) {
  48. __define(__module.exports, __require, __module);
  49. }
  50. else {
  51. __quick_compile_project__.registerModuleFunc(__filename, function () {
  52. __define(__module.exports, __require, __module);
  53. });
  54. }
  55. })();