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- (function() {
- var nodeEnv = typeof require !== 'undefined' && typeof process !== 'undefined';
- var __module = nodeEnv ? module : {exports:{}};
- var __filename = 'preview-scripts/__node_modules/browserify-aes/modes/ctr.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);}var xor = require('buffer-xor')
- var Buffer = require('safe-buffer').Buffer
- var incr32 = require('../incr32')
- function getBlock (self) {
- var out = self._cipher.encryptBlockRaw(self._prev)
- incr32(self._prev)
- return out
- }
- var blockSize = 16
- exports.encrypt = function (self, chunk) {
- var chunkNum = Math.ceil(chunk.length / blockSize)
- var start = self._cache.length
- self._cache = Buffer.concat([
- self._cache,
- Buffer.allocUnsafe(chunkNum * blockSize)
- ])
- for (var i = 0; i < chunkNum; i++) {
- var out = getBlock(self)
- var offset = start + i * blockSize
- self._cache.writeUInt32BE(out[0], offset + 0)
- self._cache.writeUInt32BE(out[1], offset + 4)
- self._cache.writeUInt32BE(out[2], offset + 8)
- self._cache.writeUInt32BE(out[3], offset + 12)
- }
- var pad = self._cache.slice(0, chunk.length)
- self._cache = self._cache.slice(chunk.length)
- return xor(chunk, pad)
- }
- }
- if (nodeEnv) {
- __define(__module.exports, __require, __module);
- }
- else {
- __quick_compile_project__.registerModuleFunc(__filename, function () {
- __define(__module.exports, __require, __module);
- });
- }
- })();
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