cryptography and data security

... Publication Data Denning, Dorothy E., (Dorothy Elizabeth), 1945- Cryptography and data security. Includes bibliographical references and index. 1. Computers Access control. 2. Cryptography. 3. Data ... A Encrypted Data vi PREFACE cryptographic controls into operating systems and database systems. I hope to cover these topics better in later editions of the book. D...

Ngày tải lên: 03/07/2014, 16:05

... for both data and for information and computing services. For example, the NIST standard FIPS 199 (Standards for Security Categorization of Federal Information Confidentiality Data and services Integrity Availability Figure ... about and understanding this impor- tant standard. The chapter on AES has been revised and expanded, with additional illus- trations and a detailed e...

Ngày tải lên: 07/12/2013, 11:53

... and the use of networks and communications facilities for carrying data between terminal user and computer and between computer and computer. Network security measures are needed to protect data ... Z A B C Cryptography and Network Security Principles and Practices, Fourth Edition 41 / 526 [Page 6] Chapter 1. Introduction 1.1 Security Trends 1.2 The OSI Security Ar...

Ngày tải lên: 18/02/2014, 08:20

... of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 09-13 May 2005 Security Guarantees ● Two possibilities: – Unconditional – Computational security ● Unconditional security: ... key ● Codes versus ciphering – Codes are stronger, and also achieve data compression Fundamentals of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 09-13 Ma...

Ngày tải lên: 05/03/2014, 23:20

... Aspects of Security Aspects of Security  consider 3 aspects of information security: consider 3 aspects of information security:  security attack security attack  security mechanism security ... Lawrie Brown Security Service Security Service  enhance security of data processing systems enhance security of data processing systems and information transfers o...

Ngày tải lên: 06/03/2014, 16:20

... plaintext  select plaintext and obtain ciphertext select plaintext and obtain ciphertext  chosen ciphertext  select ciphertext and obtain plaintext select ciphertext and obtain plaintext  chosen ... one substitution, which rotated and changed after each letter was encrypted  with 3 cylinders have 26 3 =17576 alphabets Encrypting and Decrypting Encrypting and Decryptin...

Ngày tải lên: 06/03/2014, 16:20

...  main use is sending a few blocks of data main use is sending a few blocks of data Cryptography and Cryptography and Network Security Network Security Chapter 6 Chapter 6 Fourth Edition Fourth ... for bursty high speed links  random access to encrypted data blocks random access to encrypted data blocks  provable security (good as other modes) provable secu...

Ngày tải lên: 06/03/2014, 16:20

... by “ created by “ Pseudorandom Number Generators Pseudorandom Number Generators (PRNGs)” (PRNGs)” Cryptography and Cryptography and Network Security Network Security Chapter 7 Chapter ... are not truly random although are not truly random  can pass many tests of “randomness” can pass many tests of “randomness”  known as “pseudorandom numbers” known as “pseudorandom num...

Ngày tải lên: 06/03/2014, 16:20

... & 15 are relatively prime since factors of 8 are 1,2,4,8 and of 15 are 1,3,5,15 and 1 is the only 1,2,4,8 and of 15 are 1,3,5,15 and 1 is the only common factor common factor  conversely ... comparing their prime factorizations divisor by comparing their prime factorizations and using least powers and using least powers  eg. eg. 300 300 =2 =2 1 1 x3 x3 1 1 x5 x5 2 2...

Ngày tải lên: 06/03/2014, 16:20

...    Cryptography and Cryptography and Network Security Network Security Chapter 9 Chapter 9 Fourth Edition Fourth Edition by William ... Summary Summary  & &  principles of public-key cryptography principles of public-key cryptography  RSA algorithm, implementation, secur...

Ngày tải lên: 06/03/2014, 16:20