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Pwny CTF

Past meetings

  • Welcome BackJan 18, 7 PM
  • Hot Cocoa + Board Games SocialJan 21, 2 PM
  • EditorsJan 28, 2 PM
  • Intro to PentestingFeb 01, 7 PM
  • ARM AssemblyFeb 08, 7 PM
  • PWN III - Heap ExploitationFeb 11, 2 PM
  • PWN IV - ROPFeb 15, 7 PM
  • BlockchainFeb 22, 7 PM
  • Password CrackingFeb 29, 7 PM
  • Esoteric LanguagesMar 07, 7 PM
  • WiCyS Cryptography CTFMar 18, 5 PM
  • Block and Stream CiphersMar 21, 7 PM
  • Tracer FIREMar 23, 9 AM
  • Linux Kernel ExploitationMar 24, 2 PM
  • AI HackingMar 28, 7 PM
  • Japan House SocialMar 31, 2 PM
  • Symbolic ExecutionApr 11, 7 PM
  • Location-Based OSINTApr 14, 2 PM
  • Supply Chain Attacks & PolicyApr 25, 7 PM
  • MPC (Multi-Party Computation)Apr 28, 2 PM

Block and Stream Ciphers

General
Wk 09
crypto
cipher modes
Sagnik Chakraborty
Thursday, March 21st, 2024
7 – 8 PM (CDT)
Everitt Lab 2310

A newer version of this meeting is available!

Presented February 1st, 2026

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Summary

We will discuss different cryptography modes and their strengths/weaknesses, such as cipher block chaining (CBC), electronic code book (ECB), counter (CTR), and output feedback (OFB).

Lesson history

  • Crypto III: Block Ciphers Spring 2026
  • Cryptography III: Block and Stream Ciphers Spring 2025
  • Block and Stream Ciphers Spring 2024
  • Crypto III: Block Ciphers Spring 2023
CC BY-SA

This meeting is licensed under Creative Commons Attribution-ShareAlike 4.0 International.


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