德国人在他们的U型潜水艇所用到并输出的东西是一个加密信息。

Something the Germans used on their U-boats and the output of that is a scrambled message.

youdao

加密信息保存在每个文件的扩展属性中。

The cryptographic information is kept in the extended attributes for each file.

youdao

每个文件条目包含文件名、类型和加密信息。

Each file entry contains the file name, type, and encryption information.

youdao

But in society today, and we'll talk a bit about security topics -- and such throughout the course, for cryptography -- for encrypting things like your credit card information and bank accounts -- you don't use 32 bits, you don't use 64 bits, you generally use 1024 bits, 4,048 bits.

但在当今的社会上，我们将讨论一点安全方面的知识,贯穿整个课程，密码学-,加密一些像信用卡信息,银行账号之类的东西--你不能用32位，你也不能用64位，你通常要使用1024位，4048位。

哈佛公开课 - 计算机科学课程节选