ofb.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/ofb.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);}(function (Buffer){
  12. var xor = require('buffer-xor')
  13. function getBlock (self) {
  14. self._prev = self._cipher.encryptBlock(self._prev)
  15. return self._prev
  16. }
  17. exports.encrypt = function (self, chunk) {
  18. while (self._cache.length < chunk.length) {
  19. self._cache = Buffer.concat([self._cache, getBlock(self)])
  20. }
  21. var pad = self._cache.slice(0, chunk.length)
  22. self._cache = self._cache.slice(chunk.length)
  23. return xor(chunk, pad)
  24. }
  25. }).call(this,require("buffer").Buffer)
  26. }
  27. if (nodeEnv) {
  28. __define(__module.exports, __require, __module);
  29. }
  30. else {
  31. __quick_compile_project__.registerModuleFunc(__filename, function () {
  32. __define(__module.exports, __require, __module);
  33. });
  34. }
  35. })();