CSE548 - Bridges and Switches

week3

Terminology

Port

It can be really confusing as we know "port" as in TCP/UDP context, but here in layer 2 (data link) context, a "port" is equivalent to an "interface" in Linux language.

When we talk about ports of a bridge, we are talking about different interfaces that may …

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Cryptography - Week 1

TL; DR

  • Sym. encryption
  • One Time Pad
  • Shannon: Perfect secrecy
  • History - Badly broken algorithms
  • Stream cipher - OTP in real life
  • Probability basics
  • Pseudo random gen - predictable
  • Negligible / Non-negligible

Topics

Sym. encryption definition

What

  • Sender and receiver use the same secret key for encryption and decryption,
  • or the same encryption scheme …

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