'Weak collision resistance' presentation slideshows

Crypto Conclusion

Crypto Conclusion. Message Authentication Codes Key Management. Message Authentication. message authentication is concerned with: protecting the integrity of a message Confirming identity of sender non-repudiation of origin (dispute resolution) Very important for e-commerce

634 views • 46 slides

Chapter 5: Hash Functions++

492 views • 38 slides

David Evans cs.virginia/evans

500 views • 38 slides

Public Key Encryption

Public Key Encryption. Dan Fleck CS 469: Security Engineering. 1. 1. These slides are modified with permission from Bill Young ( Univ of Texas). Public Key Encryption.

482 views • 33 slides

Hashing

Hashing. Chapter 8. Symbol Table. Symbol table is used widely in many applications. dictionary is a kind of symbol table data dictionary is database management In general, the following operations are performed on a symbol table determine if a particular name is in the table

623 views • 33 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

435 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)

339 views • 32 slides

Cryptography Basics ( ch 2)

510 views • 29 slides

Computer Security: Principles and Practice

Computer Security: Principles and Practice. Faisal Karim Shaikh DEWSNet Group Dependable Embedded Wired/Wireless Networks www.fkshaikh.com/dewsnet .

391 views • 26 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:

432 views • 25 slides

Security I

Security I. CSE 5306 Lecture Quiz due at 5 PM on 23 July 2014. Introduction to Security. Exploited by a hacker, a single design flaw in your software (or that which you administer) can quickly render it and your career failures.

445 views • 25 slides

Information Security and Management 11. Cryptographic Hash Functions

Information Security and Management 11. Cryptographic Hash Functions. Chih-Hung Wang Fall 2011. Hash Function. Definition A hash function accepts a variable-size message M as input and produces a fixed-size hash code H(M) Sometime called a message digest Hash Algorithm MD5

246 views • 23 slides

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

373 views • 21 slides

Hash Algorithms

510 views • 19 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

641 views • 17 slides