'Subjects objects' diaporamas de présentation

CMSC 414 Computer and Network Security Lecture 10

311 views • 31 slides

CMSC 414 Computer and Network Security Lecture 18

CMSC 414 Computer and Network Security Lecture 18. Jonathan Katz. Access control matrix. Matrix indexed by all subjects and objects Characterizes rights of each subject with respect to each object Formally: set of objects O and subjects S, set of possible rights

322 views • 25 slides

CMSC 414 Computer and Network Security Lecture 10

CMSC 414 Computer and Network Security Lecture 10. Jonathan Katz. HW review: private-key encryption. What is the definition of an encryption scheme? Is a ciphertext that is longer than the plaintext allowed? How does CTR mode work? What is the ciphertext?

215 views • 21 slides

Purpose

161 views • 9 slides