cfb8.js 1.6 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/browserify-aes/modes/cfb8.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);}var Buffer = require('safe-buffer').Buffer
  12. function encryptByte (self, byteParam, decrypt) {
  13. var pad = self._cipher.encryptBlock(self._prev)
  14. var out = pad[0] ^ byteParam
  15. self._prev = Buffer.concat([
  16. self._prev.slice(1),
  17. Buffer.from([decrypt ? byteParam : out])
  18. ])
  19. return out
  20. }
  21. exports.encrypt = function (self, chunk, decrypt) {
  22. var len = chunk.length
  23. var out = Buffer.allocUnsafe(len)
  24. var i = -1
  25. while (++i < len) {
  26. out[i] = encryptByte(self, chunk[i], decrypt)
  27. }
  28. return out
  29. }
  30. }
  31. if (nodeEnv) {
  32. __define(__module.exports, __require, __module);
  33. }
  34. else {
  35. __quick_compile_project__.registerModuleFunc(__filename, function () {
  36. __define(__module.exports, __require, __module);
  37. });
  38. }
  39. })();