Cryptography Session 1
Networking Fundamentals Session 2
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ECB Mode

  • Sound simple, but many applications still use ECB,
either for its flexibility or purely ignorance. E.g. first
few versions of Zoom.
• More secure mode: CTR, CBC, GCM. Among these, GCM is
the more secure as it can survive a very strong attackers who can probe the
“Decryption Oracle”.



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