华工密码学老师上课课件ch03 5).pdf

Cryptography and Cryptography and CCrryyppttooggrraapphhyy aanndd Cryptography and Cryptography and CCrryyppttooggrraapphhyy aanndd Network Security Network Security NNeettwwoorrkk SSeeccuurriittyy Network Security Network Security NNeettwwoorrkk SSeeccuurriittyy Chapter 3 Chapter 3 CChhaapptteerr 33 Chapter 3 Chapter 3 CChhaapptteerr 33 Fifth Edition Fifth Edition by William Stallings by William Stallings - Lecture slides by Lawrie Brown - Lecture slides by Lawrie Brown Zhang Jing Zhang Jing Chapter 3 – Block Ciphers and Chapter 3 – Block Ciphers and CChhaapptteerr 33 –– BBlloocckk CCiipphheerrss aanndd Chapter 3 – Block Ciphers and Chapter 3 – Block Ciphers and CChhaapptteerr 33 –– BBlloocckk CCiipphheerrss aanndd the Data Encryption the Data Encryption tthhee DDaattaa EEnnccrryyppttiioonn the Data Encryption the Data Encryption tthhee DDaattaa EEnnccrryyppttiioonn Standard(DES) Standard(DES) SSttaannddaarrdd((DDEESS)) Standard(DES) Standard(DES) SSttaannddaarrdd((DDEESS)) Modern Block Ciphers Modern Block Ciphers MMooddeerrnn BBlloocckk CCiipphheerrss Modern Block Ciphers Modern Block Ciphers MMooddeerrnn BBlloocckk CCiipphheerrss � one of the most widely used types of � one of the most widely used types of cryptographic algorithms cryptograph