The well-known NOTEPAD.EXE program is an editor for plain ASCII text files.
广为人知的NOTEPAD . EXE程序就是专门针对ASCII文本文件的编辑器。
However this is vulnerable to the plain text containing zeroes at known locations, which will be quite common in computer data.
然而，这是容易的纯文本包含在已知位置的零，这将是电脑数据相当普遍。
If unauthorized users know anything about the structure of a block of your plain text, they can use that information to decipher the known cipher text block and possibly recover your key.
如果未经授权的用户知道了您的纯文本块结构的任何信息，他们就可以利用该信息来解密已知的密码文本块，并有可能重新获得您的密钥。
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