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Fast forward mid-semester when we talk about cryptography and scrambling information, we need the ability to express ourselves in words, not just numbers, and we have that already.
回想一下期中的时候，我们讨论过密码学,和一些不规则信息,我们需要话语来表达自己，而不是数字，其实我们已经有了。
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I took a cryptology class over the summer a few years ago and...
几年前的夏天，我去上了一门密码学的课程……
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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。
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Yeah. I don't really know a whole lot of modern cryptography yet
嗯，目前我对现代密码学的了解还不多，
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Well, we'll talk before long about cryptography.
好，我们等下讲讲密码学。
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So I only kind of know what they used to do before,
所以我只对传统的密码学有一些了解，
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I want to be a cryptologist or a cryptographer.
我想做一名密码学家，破译密码。
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Can you tell us what exactly cryptography is?
密码学究竟是什么呢？
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