To encrypt a byte, we xor this pseudo-random byte with the byte we want to encrypt.
对一个字节进行加密，我们对伪随机字节和要加密的字节进行异或运算。
2
The monkey tool runs in an adb shell directly on the device or emulator and generates pseudo-random streams of user and system events.
monkey工具直接运行在设备或模拟器的 adb shell中，生成用户或系统的伪随机事件流。
3
For instance, pseudo-random Numbers are used for process IDs and packet IDs, which makes spoofing significantly more difficult for a would-be attacker.