'Hash algorithm' presentation slideshows

Cryptography

Cryptography. Chapter 5. Objectives. Identify and describe the three types of cryptography. List and describe current cryptographic algorithms. Explain how cryptography is applied for security. Agenda. Basic Terms and the Encryption/Decryption Process Types of Ciphers

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Chapter 5 Hashes and Message Digests

Chapter 5 Hashes and Message Digests. Instructor: ??? hmsun@cs.nthu.edu.tw Room: EECS 6402, Tel:03-5742968, Fax : 886-3-572-3694. Introduction.

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Spring 2014: CS419 Computer Security MAC, HMAC, Hash functions, DSA, SSL

Vinod Ganapathy. Spring 2014: CS419 Computer Security MAC, HMAC, Hash functions, DSA, SSL. Message Authentication. message authentication is concerned with: protecting the integrity of a message validating identity of originator non-repudiation of origin (dispute resolution)

696 views • 55 slides

Message Authentication Network Systems Security

Message Authentication Network Systems Security. Mort Anvari. Message Authentication. Message authentication is concerned with protecting the integrity of a message validating identity of originator non-repudiation of origin (dispute resolution)

582 views • 38 slides

Outline

Outline. Project 1 Hash functions and its application on security Modern cryptographic hash functions and message digest MD5 SHA. GNU Privacy Guard. Yao Zhao. Introduction of GnuPG. GnuPG Stands for GNU Privacy Guard A tool for secure communication and data storage

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Hashes and Message Digests

463 views • 32 slides

Number Theory and Advanced Cryptography 6. Digital Signature

Number Theory and Advanced Cryptography 6. Digital Signature. Chih-Hung Wang Sept. 2012. Part I: Introduction to Number Theory Part II: Advanced Cryptography. Hash Function. Definition A hash function accepts a variable-size message M as input and produces a fixed-size hash code H(M)

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Information System Security AABFS-Jordan Summer 2006 Digital Signature and Hashing Functions

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Hashing (Message Digest)

435 views • 29 slides

CSCE 715: Network Systems Security

CSCE 715: Network Systems Security. Chin-Tser Huang huangct@cse.sc.edu University of South Carolina. Hash Functions. Condense arbitrary message to fixed size Usually assume that the hash function is public and not keyed Hash value is used to detect changes to message

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Hashing: SHA256 Tayler Angevine Bachelor of Arts Dr. Ken Blaha 3/13/2014

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Pertemuan 09 Hash and Message Digest

Pertemuan 09 Hash and Message Digest. Matakuliah : H0242 / Keamanan Jaringan Tahun : 2006 Versi : 1. Learning Outcomes. Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : Mahasiswa dapat menjelaskan algoritma hash dan message digest. Outline Materi. Algoritma Message Digest

309 views • 21 slides

COEN 350: Network Security

COEN 350: Network Security . E-Commerce Issues. E-Commerce Issues. Table of Content HTTP Authentication Cookies. HTTP Authentication. HTTP Basically very simple. GET: Used to read a website. POST: Sends data to a website. Some data has security implications FROM field contains email.

326 views • 21 slides

CSE331: Introduction to Networks and Security

CSE331: Introduction to Networks and Security. Lecture 21 Fall 2002. Announcements. Reminder: Project 2 is due Today Project 3 will be on the web pages this afternoon. Recap. Diffie-Hellman Key Exchange Today: Cryptographic Hashes Digital Signatures Primality Testing.

208 views • 20 slides

Encryption

Encryption. An Overview. Fundamental problems. Internet traffic goes through many networks and routers Many of those networks are broadcast media Sniffing allows for many to see transmissions Tamper/alter transmission Spoof identities. Security Issues. Eavesdropping Tampering

394 views • 18 slides

Hash functions

Hash functions. a hash function produces a fingerprint of some file/message/data h = H(M) condenses a variable-length message M to a fixed-sized fingerprint usually assume that the hash function is public, not keyed cf. MAC which is keyed hash used to detect changes to message

350 views • 18 slides

Algorithm Agility in PKIX

Algorithm Agility in PKIX. Tim Polk March 20, 2006. Deploying a New Hash Algorithm. Bellovin/Rescorla paper presented at NDSS conference Difficulty of transitioning to SHA-2 in particular and crypto algorithms in general Established rough criteria for algorithm agility

187 views • 18 slides

Lect. 15 : Digital Signatures RSA, ElGamal , DSA, KCDSA, Schnorr

Lect. 15 : Digital Signatures RSA, ElGamal , DSA, KCDSA, Schnorr. 1. Digital Signature. Digital Signature Electronic version of handwritten signature on electronic document Signing using private key (only by the signer) Verification using public key (by everyone)

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Encryption Vulnerabilities

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Transport Layer Security (TLS) Cached Information Extension

Transport Layer Security (TLS) Cached Information Extension. S. Santesson , H. Tschofenig. Problem Statement. TLS handshakes often include fairly static information, such as the server certificate and a list of trusted Certification Authorities ( CAs ).

161 views • 4 slides