'Feistel cipher' presentation slideshows

COEN 350: Network Security

COEN 350: Network Security. Overview of Cryptography. Overview of Cryptography. Table of contents Introduction Cryptographic Security One Way Functions Secret Key Cryptography Public Key Cryptography Message Authentication Codes Zero Knowledge Proofs Diffie Hellman Key Exchange.

900 views • 78 slides

Chapter 3: Modern Block Ciphers and the Data Encryption Standard

Chapter 3: Modern Block Ciphers and the Data Encryption Standard. Again Special Thanks to Dr. Lawrie Brown at the Australian Defense Force Academy whose PowerPoint slides provided the basis for these slides. Recall: Private-Key Encryption Algorithms.

833 views • 59 slides

CSC 474 Information Systems Security

CSC 474 Information Systems Security. Topic 2.2 Secret Key Cryptography. Generic block cipher Feistel cipher DES Modes of block ciphers Multiple encryptions Message authentication through secret key cryptography. Agenda. Generic Block Cipher. Generic Block Cipher. Encrypt. Plaintext

804 views • 59 slides

CSCD 434 Spring 2012

CSCD 434 Spring 2012. Lecture 14 Cryptography - Symmetric. 1. Symmetric Cipher Families. Involve using one key for both encryption and decryption Symmetric modern crypto systems have two broad families of methods Stream ciphers Block ciphers. 2. Block vs. Stream Cipher. Block ciphers

674 views • 55 slides

788 views • 54 slides

Cryptography and Network Security

595 views • 51 slides

Chapter 3: Symmetric Key Crypto

AL-MAAREFA COLLEGE FOR SCIENCE AND TECHNOLOGY COMP 425: Information Security CHAPTER 7 Symmetric Key Crypto (Chapter 3 in the textbook) INFORMATION SECURITY Principles and Practice Instructor Ms. Arwa Binsaleh. Chapter 3: Symmetric Key Crypto.

695 views • 49 slides

Modern Block Ciphers and the Data Encryption Standard (DES)

Modern Block Ciphers and the Data Encryption Standard (DES). Again Special Thanks to Dr. Lawrie Brown at the Australian Defense Force Academy whose PowerPoint slides provided the basis for these slides. Recall: Private-Key Encryption Algorithms.

603 views • 49 slides

Network Security Essentials Chapter 2

Network Security Essentials Chapter 2. Fourth Edition by William Stallings Lecture slides by Lawrie Brown. Symmetric Encryption. or conventional / private-key / single-key sender and recipient share a common key all classical encryption algorithms are private-key

703 views • 46 slides

Network Security Essentials Chapter 2 Symmetric Encryption and message confidentiality

Network Security Essentials Chapter 2 Symmetric Encryption and message confidentiality. Agenda. Symmetric encryption principles Symmetric block encryption algorithms DES, 3DES, AES Random and pseudorandom numbers Streaming ciphers RC4 Cipher block modes of operation.

975 views • 45 slides

Cryptography and Network Security

Cryptography and Network Security. Chapter 3 – Block Ciphers and the Data Encryption Standard.

520 views • 45 slides

Cryptography and Network Security Chapter 3

Cryptography and Network Security Chapter 3. Modern Block Ciphers. now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy /authentication services focus on DES (Data Encryption Standard) to illustrate block cipher design principles.

841 views • 44 slides

Symmetric Encryption Algorithms

570 views • 42 slides

Symmetric Encryption Algorithms

636 views • 40 slides

Cryptography and Network Security Chapter 3

645 views • 37 slides

Modern Block Ciphers

Modern Block Ciphers. now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy /authentication services focus on DES (Data Encryption Standard) to illustrate block cipher design principles. Block vs Stream Ciphers.

816 views • 35 slides

Cryptography

466 views • 31 slides

Cryptography and Network Security Chapter 3

Cryptography and Network Security Chapter 3. Fourth Edition by William Stallings Lecture slides by Lawrie Brown. Modern Block Ciphers. now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy /authentication services

406 views • 25 slides

Claude Shannon and Substitution-Permutation Ciphers

Claude Shannon and Substitution-Permutation Ciphers. in 1949 Claude Shannon introduced idea of substitution-permutation (S-P) networks modern substitution-transposition product cipher these form the basis of modern block ciphers

795 views • 22 slides

128-bit Block Cipher Camellia

617 views • 18 slides