Lecture 04 Message Authentication and Hash Functions

Nov 24, 2013

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ITEC4614 Network Security and Implementation. 2. Outline. Authentication RequirementsAuthentication FunctionsHash and MAC Algorithms. ITEC4614 Network Security and Implementation. 3. What is Authentication?. A procedure to verify that received messages come from the alleged sourced and have not b

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Lecture 04 Message Authentication and Hash Functions

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Message Authentication and Hash Functions

Message Authentication and Hash Functions Authentication Requirements Authentication Functions Message Authentication Codes Hash Functions Security of Hash Functions and MACs Authentication Requirements Kind of attacks (threats) in the context of communications across a network Disclosure

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Chapter 3 (C) – Message Authentication and Hash Functions

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Chapter 11: Message Authentication and Hash Functions

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Chapter 11 – Message Authentication and Hash Functions

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Message Authentication and Hash Functions

Message Authentication and Hash Functions. Authentication Requirements Authentication Functions Message Authentication Codes Hash Functions Security of Hash Functions and MACs. Authentication Requirements. Kind of attacks (threats) in the context of communications across a network

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Lecture 04 Message Authentication and Hash Functions

Lecture 04 Message Authentication and Hash Functions. Asst.Prof.Supakorn Kungpisdan, Ph.D. supakorn@mut.ac.th. Outline. Authentication Requirements Authentication Functions Hash and MAC Algorithms. What is Authentication?.

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MESSAGE AUTHENTICATION and HASH FUNCTIONS - Chapter 11

• Masquerade – message insertion, fraud, ACK • Content Modification • Sequence Modification – insertion, deletion, re-ordering • Timing Modification – delay, replay. MESSAGE AUTHENTICATION and HASH FUNCTIONS - Chapter 11.

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Chapter 11 Message Authentication and Hash Functions

Chapter 11 Message Authentication and Hash Functions. Message Authentication. message authentication is concerned with: protecting the integrity of a message validating identity of originator non-repudiation of origin (dispute resolution) then three alternative functions used:

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Chapter 11 – Message Authentication and Hash Functions

Dr. Lo’ai Tawalbeh New York Institute of Technology (NYIT) Jordan’s Campus. Chapter 11 – Message Authentication and Hash Functions. INCS 741: CRYPTOGRAPHY. Message Authentication. message authentication is concerned with: protecting the integrity of a message

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Lecture 4: Hash Functions

Lecture 4: Hash Functions. CS 436/636/736 Spring 2013 Nitesh Saxena. Course Administration. HW1 being graded Solution was emailed Expect HW2 by coming Monday Covers mostly Public Key Cryptography Will be due in 12-14 days. Outline of Today’s lecture. Hash Functions Properties

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Message Authentication and Hash Functions

INCS 741: Cryptography. Message Authentication and Hash Functions. Dr. Monther Aldwairi New York Institute of Technology- Amman Campus 12/19/2010. Authentication Requirements. disclosure traffic analysis masquerade content modification sequence modification timing modification

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