Keyed hash functions - PowerPoint PPT Presentation

15-349 Introduction to Computer and Network Security

15-349 Introduction to Computer and Network Security. Iliano Cervesato 7 September 2008 – Beyond Encryption. Where we are. Course intro Cryptography Intro to crypto Modern crypto Symmetric encryption Asymmetric encryption Beyond encryption Cryptographic protocols Attacking protocols

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687 views • 36 slides

Cryptography and Network Security (Various Hash Algorithms)

Cryptography and Network Security (Various Hash Algorithms). Fourth Edition by William Stallings Lecture slides by Lawrie Brown (Changed by Somesh Jha). Birthday Attacks. might think a 64-bit hash is secure but by Birthday Paradox is not birthday attack works thus:

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475 views • 25 slides

Agenda

CS G513 / SS G513 Network Security. Agenda. Integrity – Hash Codes (Keyed and Unkeyed). Integrity. M is created (say by A) and sent (to B) or stored (in C). The message M’ received (by B) must be same as M. (Message Integrity)

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288 views • 13 slides

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