Lecture4 of Information Security for Diploma 2018-2019

Lecture 4 Title : Block Ciphers
Lecture Outlines:
4.1 Introduction.
4.2 Feistel Ciphers.
4.3 Block Cipher
4.4 Data Encryption Standard DES (Chapter 4 below)
Objectives :
After studying this lecture, you will be able to discuss:
? Basic difference in two types of ciphers: stream and block
? Reversible and irreversible block ciphers
? Feistel cipher structure
? Ideal block cipher
? Manageable block cipher
? Encryption and decryption with Feistel structure
Lecture 4 Title : Block Ciphers
Lecture Outlines:
4.1 Introduction.
4.2 Feistel Ciphers.
4.3 Block Cipher
4.4 Data Encryption Standard DES (Chapter 4 below)
Objectives :
After studying this lecture, you will be able to discuss:
? Basic difference in two types of ciphers: stream and block
? Reversible and irreversible block ciphers
? Feistel cipher structure
? Ideal block cipher
? Manageable block cipher
? Encryption and decryption with Feistel structure

Lecture 4 Title : Block Ciphers
Lecture Outlines:
4.1 Introduction.
4.2 Feistel Ciphers.
4.3 Block Cipher
4.4 Data Encryption Standard DES (Chapter 4 below)
Objectives :
After studying this lecture, you will be able to discuss:
? Basic difference in two types of ciphers: stream and block
? Reversible and irreversible block ciphers
? Feistel cipher structure
? Ideal block cipher
? Manageable block cipher
? Encryption and decryption with Feistel structure