'Decryption key' diaporamas de présentation

Security

Security. 9.1 The security environment 9.2 Basics of cryptography 9.3 User authentication 9.4 Attacks from inside the system 9.5 Attacks from outside the system 9.6 Protection mechanisms 9.7 Trusted systems. Chapter 9. Security Environment.

1.17k views • 97 slides

? ???? ?? ??????????? ??? ??????(???? ?????)

? ???? ?? ??????????? ??? ??????(???? ?????). ??? ?????? a.fanian@cc.iut.ac.ir. ????? ?????. ? ????? ???? ?? ????? ???? ??????????? ???????? ????? ??????????? ??? ??????(???? ?????) ??????????? ???????? ????? ???? ??? ???????? ?????? ???? ??. ????? ?????. ? ????? ???? ?? ?????

755 views • 61 slides

Prime Numbers

Prime Numbers. The Fundamental Theorem of Arithmetic Every whole number can be factored uniquely into a product of prime number powers. For example, 123456789=3*3*3607*3803=3 2 *3607*3803 Prime numbers are the code for writing all whole numbers.

901 views • 55 slides

Multi-Dimensional Range Query over Encrypted Data

Multi-Dimensional Range Query over Encrypted Data. Authors: Elaine Shi, Joint work with John Bethencourt, Hubert Chan, Dawn Song, Adrian Perrig Slides originated from Elaine Shi, modified by Michael Chen CSC 774 Advanced Network Security Instructor: Dr. Peng Ning Presenter: Michael Chen

562 views • 47 slides

Constructions Secure against Receiver Selective Opening and Chosen Ciphertext Attacks

Constructions Secure against Receiver Selective Opening and Chosen Ciphertext Attacks. Dingding Jia , Xianhui Lu, Bao Li jiadingding@iie.ac.cn CT-RSA 2017 02-17. Outline. Background Motivation Our contribution

648 views • 44 slides

CSE 451: Operating Systems Winter 2010 Module 17 Authentication / Authorization / Security

2.24k views • 40 slides

Database Query Security

Database Query Security. Goal. Goal of this lecture is to provide an overview of security concepts in database system. Presentation Outline. Introduction Access Control Discretionary access control Mandatory access control Security to level of field. Internet Security

399 views • 28 slides

Lecture 8 - Security

Lecture 8 - Security. 10 Laws of Security Cryptography Virus vs. Worm vs. Trojan Firewalls Checksums Passwords. 10 Laws of Security. If a bad guy can persuade you to run his program on your computer, it's not your computer anymore.

422 views • 25 slides

Security and Authorization

297 views • 23 slides

Trusted Data Sharing over Untrusted Cloud Storage Provider

432 views • 20 slides

Cryptography

Cryptography. a connection between language and mathematics. Introduction. Cryptography : the procedures, processes, methods, etc., of making and using secret writing, as codes or ciphers

290 views • 16 slides

Cryptographic Security

Cryptographic Security. Aveek Chakraborty. Goals of Cryptography. The most basic problem : ensure security of communication over in-secure medium Security Goals: - privacy (secrecy, confidentiality)

356 views • 16 slides

digital steganography & steganalysis

digital steganography & steganalysis. Yeuan Kuen Lee May 11, 2012. http://iservice.libertytimes.com.tw/liveNews/news.php?no=634472. http://edition.cnn.com/2012/04/30/world/al-qaeda-documents-future/.

428 views • 15 slides

Security Protection on Trust Delegated Medical Data in Public Mobile Networks

Security Protection on Trust Delegated Medical Data in Public Mobile Networks. Dasun Weerasinghe, Muttukrishnan Rajarajan and Veselin Rakocevic Mobile Networks Research Group School of Engineering and Mathematical Sciences City University London. Outline of the Presentation. Motivation

221 views • 14 slides

CPSC 463

CPSC 463. Week 1. Historical Interlude 1. Who is the largest employer of mathematicians in the US?. Answer. The National Security Agency Established in 1952 by Presidential Directive Assignment 1 (due 1/22). Terms. Cryptology Study of communication over insecure channels

297 views • 14 slides

Network Security

264 views • 13 slides

Announcements: Subscribe to piazza and start HW1 Questions? Roll Call Today: affine ciphers

DTTF/NB479: Dszquphsbqiz Day 2. Announcements: Subscribe to piazza and start HW1 Questions? Roll Call Today: affine ciphers. Sherlock Holmes, The Adventure of the Dancing Men (1898) Who got it?. In a letter:. 2 weeks later:. 2 mornings later:. 3 days later:. 4 days later:.

240 views • 13 slides

Distributed Secure Multiparty Computations in Hostile Environments

306 views • 13 slides

Private and Public Key DNA Steganography

Private and Public Key DNA Steganography. C. Richter, A. Leier, W. Banzhaf, and H. Rauhe Cho, Dong-Yeon. Private Key Encryption. Steganography with Digital DNA Assembly of DNA binary strands Secret messages

279 views • 6 slides

The Effectiveness of Instruction Set Randomization

Where's the FEEB?: The Effectiveness of Instruction Set Randomization. Nora Sovarel, David Evans, Nate Paul. To appear at USENIX Security, August 2005. The Effectiveness of Instruction Set Randomization. Nora Sovarel http://www.cs.virginia.edu/nora University of Virginia Computer Science

195 views • 6 slides