Cryptography and Network Security (4th Edition) by William Stallings

By William Stallings

In this age of viruses and hackers, of digital eavesdropping and digital fraud, safety is paramount. This reliable, up to date educational is a accomplished therapy of cryptography and community protection is perfect for self-study. Explores the elemental matters to be addressed by way of a community safeguard potential via an academic and survey of cryptography and community safeguard know-how. Examines the perform of community protection through useful functions which were carried out and are in use at the present time. presents a simplified AES (Advanced Encryption general) that allows readers to know the necessities of AES extra simply. good points block cipher modes of operation, together with the CMAC mode for authentication and the CCM mode for authenticated encryption. contains an extended, up-to-date remedy of intruders and malicious software program. an invaluable reference for process engineers, programmers, approach managers, community managers, product advertising team of workers, and approach help experts.

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The key is a value independent of the plaintext and of the algorithm. The algorithm will produce a different output depending on the specific key being used at the time. The exact substitutions and transformations performed by the algorithm depend on the key. Ciphertext: This is the scrambled message produced as output. It depends on the plaintext and the secret key. For a given message, two different keys will produce two different ciphertexts. The ciphertext is an apparently random stream of data and, as it stands, is unintelligible.

COAST: Comprehensive set of links related to cryptography and network security. IETF Security Area: Material related to Internet security standardization efforts. Computer and Network Security Reference Index: A good index to vendor and commercial products, FAQs, newsgroup archives, papers, and other Web sites. [Page 25] The Cryptography FAQ: Lengthy and worthwhile FAQ covering all aspects of cryptography. Tom Dunigan's Security Page: An excellent list of pointers to cryptography and network security Web sites.

Contain no modification, insertion, deletion, or replay). Connection Integrity with Recovery Provides for the integrity of all user data on a connection and detects any modification, insertion, deletion, or replay of any data within an entire data sequence, with recovery attempted. Connection Integrity without Recovery As above, but provides only detection without recovery. Selective-Field Connection Integrity Provides for the integrity of selected fields within the user data of a data block transferred over a connection and takes the form of determination of whether the selected fields have been modified, inserted, deleted, or replayed.

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