This leaves the cryptanalyst with a file that contains only the two original files XORed against each other.
这就只剩下了一个文件，只包含对彼此异或两个原始文件密码分析。
2
In these attacks, if the cryptanalyst knows the file type, then he can use knowledge of header formats to guess at the key stream used to encode the file.
在这些袭击中，如果知道密码分析的文件类型，那么他可以使用头格式的知识来猜测用于编码文件的密钥流。
3
If a cryptanalyst thinks that a user has used the same key to encrypt two different files, he can XOR the two files together and cancel out the output from the PRNG.