'Instructor ali aydin selcuk' presentation slideshows

Security Handshake Pitfalls, II

Security Handshake Pitfalls, II. CS 519 Cryptography and Network Security Instructor: Ali Aydin Selcuk. Key Establishment and Authentication with KDC. A simple protocol: Problem: Potential delayed key delivery to Bob. (besides others). Alice, Bob. K B {Alice, K AB }. KDC.

388 views • 10 slides

Authenticating with Block Ciphers

Authenticating with Block Ciphers. CS 470 Introduction to Applied Cryptography Instructor: Ali Aydin Selcuk. Message Authentication Codes (MAC). A keyed checksum of the message. Sender of a message m computes c = MAC K (M) and sends (M,c) to the receiver.

182 views • 9 slides

Secret Sharing Schemes

334 views • 5 slides