Cryptography And Network Security

... algorithms and security protocols to provide security over networks and the Internet Topics covered include transport-level security, wireless network security, e-mail security, and IP security ... 0-13141098-9 AND DATA COMMUNICATIONS TECHNOLOGY NETWORK SECURITY ESSENTIALS, FOURTH EDITION A tutorial and survey on network security technology The book covers impor...

Ngày tải lên: 07/12/2013, 11:53

... 526 Cryptography and Network Security Principles and Practices, Fourth Edition • Table of Contents • Index Cryptography and Network Security Principles and Practices, Fourth Edition By ... and are in use today / 526 Cryptography and Network Security Principles and Practices, Fourth Edition • Table of Contents • Index Cryptography and...

Ngày tải lên: 18/02/2014, 08:20

... Fundamentals of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 09­13 May 2005 Security Guarantees ● Two possibilities: – – ● Unconditional Computational security Unconditional security: ... systems have computational security – How much security to have? – Depends on cost-benefit analysis for attacker Fundamentals of Wired and Wireless Networks, Kameswari Chebro...

Ngày tải lên: 05/03/2014, 23:20

...  pervasive security mechanisms:  trusted functionality, security labels, event detection, security audit trails, security recovery Model for Network Security Model for Network Security  using ... Aspects of Security  consider aspects of information security:    security attack security mechanism security service Security Attack      any action that compr...

Ngày tải lên: 06/03/2014, 16:20

... decryptions/µs 32 2 32 = 4.3 × 109 23 1 µs = 35.8 minutes 2. 15 milliseconds 56 25 6 = 7 .2 × 1016 25 5 µs = 11 42 years 10.01 hours 128 21 28 = 3.4 × 1038 21 27 µs = 5.4 × 1 024 years 5.4 × 1018 years 168 21 68 = ... y z 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25  then c p = = have Caesar cipher as: E(p) D(c) = = (p (c + – k) k) mod mod (26 ) (26 ) Cryptanalysis of Ca...

Ngày tải lên: 06/03/2014, 16:20

... stage (hence name) standard allows any number of bit (1,8, 64 or 128 etc) to be feed back   denoted CFB-1, CFB-8, CFB -64 , CFB-128 etc most efficient to use all bits in block (64 or 128) Ci C-1 ... for each message byte Mi i = (i + 1) (mod 2 56) j = (j + S[i]) (mod 2 56) swap(S[i], S[j]) t = (S[i] + S[j]) (mod 2 56) Ci = Mi XOR S[t] RC4 Overview RC4 Security  claimed secure against kno...

Ngày tải lên: 06/03/2014, 16:20

... algorithmic techniques to create “random numbers”  although are not truly random  can pass many tests of “randomness” known as “pseudorandom numbers” created by “Pseudorandom Number Generators (PRNGs)” ... for cipher use, good for key generation Natural Random Noise    best source is natural randomness in real world find a regular but random event and monitor generally need special h/w...

Ngày tải lên: 06/03/2014, 16:20

... 1,2,4 ,8 and of 15 are 1,3,5,15 and is the only common factor conversely can determine the greatest common divisor by comparing their prime factorizations and using least powers  eg 300=21x31x52 18= 21x32 ... is: 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 101 103 107 109 113 127 131 137 139 149 151 157 163 167 173 179 181 191 193 197 199 Prime Factorisation  to...

Ngày tải lên: 06/03/2014, 16:20

... Chapter – Public Key Cryptography and RSA Every Egyptian received two names, which were known respectively as the true name and the good name, or the great name and the little name; and while the good ... Bough, Sir James George Frazer Private-Key Cryptography      traditional private/secret/single key cryptography uses one key shared by both sender and receiver if this k...

Ngày tải lên: 06/03/2014, 16:20

... CS595 -Cryptography and Network Security Information Transferring CS595 -Cryptography and Network Security Attack: Interruption CS595 -Cryptography and Network Security Attack: Interception CS595 -Cryptography ... CS595 -Cryptography and Network Security Attack: Modification CS595 -Cryptography and Network Security Attack: Fabrication CS595 -Cryptography...

Ngày tải lên: 14/03/2014, 20:20

... book Cryptography and Network Security: Principles and Practice,” 5th Ed, 2011 Washington University in St Louis CSE571S 1-2 ©2011 Raj Jain Standards Organizations National Institute of Standards ... comp.risks comp.virus Security and Cryptography Forum, http://forums.devshed.com/security -and -cryptography- 17/ Cryptography Forum, http://www.topix.com/forum/science /cryptogra...

Ngày tải lên: 14/03/2014, 22:20

... Chapter 10 – Key Management; Other Public Key Cryptosystems No Singhalese, whether man or woman, would venture out of the house without a bunch of keys in his hand, for without ... key and their identity B generates a session key K sends it to A encrypted using the supplied public key A decrypts the session key and both use problem is that an opponent can intercept and ... users cou...

Ngày tải lên: 15/03/2014, 17:20

... Algorithm (DSA)  creates a 320 bit signature  with 512-1024 bit security  smaller and faster than RSA  a digital signature scheme only  security depends on difficulty of computing discrete logarithms ... Creation  to sign a message   M the sender: generates a random signature key k, k

Ngày tải lên: 15/03/2014, 17:20

... bits of message to random key bits CS595 -Cryptography and Network Security Cont Key Key Plaintext Ciphertext Ciphertext CS595 -Cryptography and Network Security Plaintext Pros and Cons q Drawbacks ... in software) Will call these p-boxes CS595 -Cryptography and Network Security Cont CS595 -Cryptography and Network Security Substitution-permutation Network q Sh...

Ngày tải lên: 22/03/2014, 14:20

... William Cryptography and network security : principles and practice / William Stallings 2nd ed p c m Rev ed of: Network and Internetwork Security Includes bibliographical references and index ... a network security capability are explored by providing a tutorial and survey of cryptography and network security technology The latter part of the book deals with the p...

Ngày tải lên: 22/03/2014, 14:20