'Cryptographic checksum' presentation slideshows

Authentication and Secure Communication

899 views • 74 slides

Chapter 4 Modes of Operation

Chapter 4 Modes of Operation. Instructor: ??? hmsun@cs.nthu.edu.tw Room: EECS 6402, Tel:03-5742968, Fax : 886-3-572-3694. Encrypting a Large Message. There are several schemes defined in [DES81] to encrypt a message larger than 64 bits. Electronic Code Book (ECB) Cipher Block Chaining (CBC)

667 views • 47 slides

Electronic Voting Network Security

Electronic Voting Network Security. Edward Bigos George Duval D. Seth Hunter Katie Schroth. Outline. Introduction & Overview Network Definition Funding & Certification Security Concerns Recommendations Conclusion. Introduction. Election security is a historic concern

345 views • 25 slides

Cryptography and Network Security

Cryptography and Network Security. Third Edition by William Stallings Message Authentication and Hash Functions Lecturer: Dr. Saleem Al_Zoubi. Message Authentication. message authentication is concerned with: protecting the integrity of a message validating identity of originator

393 views • 24 slides

Security

Security. Outline Encryption Algorithms Authentication Protocols Message Integrity Protocols Key Distribution Firewalls. Why do we care about Security?.

305 views • 21 slides

ITIS 3200: Introduction to Information Security and Privacy

ITIS 3200: Introduction to Information Security and Privacy. Dr. Weichao Wang. Public Key Cryptography. Two keys Private key known only to owner Public key available to anyone Idea Confidentiality: encipher using public key, decipher using private key (only the owner can decipher it)

300 views • 21 slides

Message Authentication

Message Authentication. message authentication is concerned with: protecting the integrity of a message validating identity of originator non-repudiation of origin (dispute resolution) will consider the security requirements then three alternative functions used: message encryption

302 views • 14 slides