进阶 · 课程数：4
Cryptography and data protection
AES, RSA and elliptic curves, hashing and password storage, certificates and TLS, and how to protect data at rest, in transit and in use.
- 1 Encryption standards: AES, RSA and elliptic curves, and when each is used
Why real systems combine a fast symmetric cipher with a public-key algorithm, and what the standard names AES, RSA and ECC actually mean.
8 分钟 - 2 Hashing: SHA-256, why MD5 is retired, and how passwords should be stored
What a hash guarantees, why old algorithms like MD5 and SHA-1 were retired, and why passwords need a salt and a deliberately slow hash.
8 分钟 - 3 Public key infrastructure: certificates, certificate authorities and TLS
How your browser decides that a website is really who it claims to be, and what the padlock does and does not promise.
8 分钟 - 4 Data at rest, in transit and in use: protecting information in all three states
Data needs different protections when it is stored, when it moves and when it is being processed. Here is what protects each state, and where the gaps are.
8 分钟
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