All important plans were sent to the police in cipher.

所有重要计划均以密码送往警方。

《新英汉大辞典》

It's a telegram in cipher.

这是密码电报。

youdao

The concrete example of this scenario in Cipher Text is the record editor.

在这种情况下，在密文具体的例子是记录编辑器。

youdao

You can brute force it and unfortunately, the so-called Caesar cipher is not very secure because if you assume, for our purposes in English alphabet with 26 characters, say all lowercase for all uppercase, my God, you only have to try like 24, 25, 26 possible rotations until you can figure out what his secret message is.

你可以强行解密但是不幸地是，所谓的凯撒密码不是很安全的,因为如果假设，对于我们的26个字符的字母表,指明所有的小写为大写，我的天，你只要试24，25次，26次就可以解答出,密文的内容。

哈佛公开课 - 计算机科学课程节选

Fincher, working with a fantastically detailed script by the young James Vanderbilt, chronicles the case of the self-identified Zodiac killer, a taunting, publicity-mad creep who murdered at least five people in the San Francisco Bay Area in the late sixties and sent confessional notes about the crimes (sometimes in cipher) to newspapers.

NEWYORKER: Zodiac

They searched for the most commonly used characters in a cipher alphabet and matched them with the most frequently used letters in the real alphabet.

FORBES: I've got a secret

Last month, Giuliani sent a message to the Republican base that, in the cipher of abortion politics, was meant to say, Trust me.

NEWYORKER: Mayberry Man