专家 · 课程数：4
Cryptography you can rely on
What encryption, hashing and signatures really guarantee, how TLS and end-to-end encryption work, and where keys make or break them.
知识单元： BCY 阅读知识单元
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- 1 Symmetric encryption, asymmetric encryption, and hashing
Three different cryptographic tools guarantee three different things. Confusing them is the most common source of false confidence.
9 分钟 - 2 Digital signatures, certificates, and TLS
How a browser knows it is really talking to your bank, why a padlock icon means something specific, and what it does not mean.
9 分钟 - 3 What end-to-end encryption protects, and what it doesn’t
Content is only part of what a conversation reveals. Metadata, endpoints, and backups can matter just as much — and encryption does not cover them.
8 分钟 - 4 Keys and passwords: why losing one breaks everything
Every guarantee in this course rests on a key or a password staying secret. Key management is the unglamorous discipline that makes or breaks cryptography.
8 分钟
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