Download Bulletproof Wireless Security: GSM, UMTS, 802.11 and Ad Hoc by Praphul Chandra PDF

By Praphul Chandra

Eventually - a unmarried quantity consultant to truly powerful protection for either voice and knowledge instant networks!More and extra information and voice communications are going through instant at some point soon among the sender and meant recipient. accordingly, actually "bulletproof" instant safety is now greater than a fascinating characteristic - as a substitute, it is necessary to guard crucial own and company info from hackers and eavesdroppers.In this convenient reference, Praphul Chandragives you the conceptual and useful instruments each RF, instant, and community engineer wishes for high-security instant applications.Book overview From EDN Magazine: this publication youll locate insurance of those crucial topics:+Cryptographic protocols utilized in instant networks.+ Key-based protocols, together with key alternate and authentication techniques.+ a variety of kinds of instant community assaults, together with mirrored image, consultation hijacks, and Fluhrer-Mantin-Shamir (FMS) attacks.+ Encryption/decryption criteria and methods.+ Multi-layered protection architectures.+ safe sockets layer (SSL) and delivery layer protection (TLS) protocols.+ mobile phone community architectures and their vulnerabilities.+ Modulation suggestions, equivalent to direct-sequence unfold spectrum (DSSS) and orthogonal frequency department multiplexing (OFDM).And youll additionally locate assurance on such state of the art themes as safeguard thoughts for advert hoc networks andprotecting Bluetooth networks. If youre enthusiastic about instant safeguard, then this name belongs in your reference bookshelf!"

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Additional resources for Bulletproof Wireless Security: GSM, UMTS, 802.11 and Ad Hoc Security

Sample text

2 Cryptography Now that we understand the requirements of a secure communication network, the next question is how to satisfy these requirements. Here is where cryptography comes in. Cryptography is the art and science of keeping messages secure[1]. Let us look at how cryptography makes messages “secure” in the context of our requirements of secure communication networks. 1 Confidentiality Users of a network use human languages (like English, Hindi, French, and so forth) to communicate over a network.

Protection works by having multiple resources where one is needed. This means that if one resource is brought down by the attack, the other resource can take over without the service being affected. Reaction works by tracking the source of the packets which are overloading the resource and then taking appropriate action against the source of the attack (usually this means shutting off the source). However, reaction 25 Chapter 1 will not work if the attack is using IP address spoofing or if it is a DDoS attack.

Since it is impractical to manage such tables for 64-bit blocks, substitution is done for 8-bit blocks which are obtained by splitting up the input block. 2k bits. A permutation specifies, for each of the k input bits, the output position to which it goes. To specify a completely randomly chosen permutation of the k-bits would take about k. log k. The aim of permutation and substitution is to maximize diffusion and confusion. Diffusion is the property of ciphers which measures how many bits change in the ciphertext when a single bit is changed in the plaintext.

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