CS338 Computer Security
Monday, 18 September 2023

+ Questions
- Varun's Slack question about IP addresses
- about the homework
- or base64
- or anything else

+ The HTTP RFCs
- Questions about vocabulary,
    inscrutable sentences, etc.
- Using Burpsuite while reading

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+ Symmetric encryption
- P = Plaintext (the message)
- K = Key
- E = encryption function of message and key
- D = decryption function of message and key
- C = E(P, K) = Ciphertext
- P == D(C, K)

+ How might you do it?
- Pretend your keys are 16 bits long.
- Think about ways to attack your encryption scheme

+ Other stuff
- XOR & random numbers
- blocks
- padding
- ...