Those of you with backgrounds in history or we've seen -- or remember World War II with technologies that were used in it might know of the Enigma machine, which is kind of the same idea.

你们其中有历史背景的人或者我们看到的-，或记得起的第二次世界大战中使用的，可能知道的英格玛装置，那是一种同样的思想。

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In addition to the complexity of the Enigma machine itself, its operating procedures became increasingly complex, as the German military wanted to make Enigma communications harder to code break.

为了使盟军无法破译恩尼格玛密电，德军还专门制定了一套极为复杂的密码使用规则，尽管恩尼格码机本身就是极端复杂的。

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In the history of cryptography, the Enigma was a portable cipher machine used to encrypt and decrypt secret messages.

在密码学的历史上，谜是一轻便的密码机可将秘密通讯电文加密和解密。

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- Those of you with backgrounds in history or we've seen -- or remember World War II with technologies that were used in it might know of the Enigma machine, which is kind of the same idea.

你们其中有历史背景的人或者我们看到的-,或记得起的第二次世界大战中使用的,可能知道的英格玛装置，那是一种同样的思想。

哈佛公开课 - 计算机科学课程节选

If you have some plain text, some message that you want to send, well, you can encrypt it or you can scramble it using a key, a secret key, which might be a physical machine like the Enigma 13 or it might be a number like 13.

如果你有没有加密的文本，你想要寄送的一些消息,你就可以加密它,或者你可以用一个密钥使其变得混乱，那就像一个英格玛的物理装置,或者他就是一个数字。

哈佛公开课 - 计算机科学课程节选

The Enigma machine was used by the German navy, air force and army to send encrypted messages.

BBC: Bletchley Park Enigma code hut to be restored

Even while British code breakers were cracking the Enigma machine and altering the course of the war, Americans were developing one of the most secure, efficient forms of encryption, which was also one of the simplest.

FORBES: I've got a secret

Bletchley Park was the wartime home of the Government Code and Cypher School which broke the codes generated by the German Enigma machine, using the Bombe.

BBC: Bletchley Park Enigma code hut to be restored