Modern Cryptography: Protect Your Data With Fast Block by N. Goots, B. Izotov, N. Moldovyan

By N. Goots, B. Izotov, N. Moldovyan

This ebook provides a normal photograph of contemporary cryptography and covers particular matters with regards to constructing speedy block ciphers utilizing software program and/or implementation in a manner that's simply comprehensible to a large circle of readers.

Show description

By N. Goots, B. Izotov, N. Moldovyan

This ebook provides a normal photograph of contemporary cryptography and covers particular matters with regards to constructing speedy block ciphers utilizing software program and/or implementation in a manner that's simply comprehensible to a large circle of readers.

Show description

Read Online or Download Modern Cryptography: Protect Your Data With Fast Block Ciphers PDF

Similar organization and data processing books

JDBC Recipes: A Problem-Solution Approach

JDBC Recipes offers easy-to-implement, usable ideas to difficulties in relational databases that use JDBC. it is possible for you to to combine those recommendations into your web-based functions, akin to Java servlets, JavaServer Pages, and Java server-side frameworks. this useful publication helps you to lower and paste the suggestions with none code adjustments.

The effects of sterilization methods on plastics and elastomers: the definitive user's guide and databook

This greatly up to date moment variation was once created for clinical equipment, clinical packaging, and nutrition packaging layout engineers, fabric product technical help, and research/development team of workers. This complete databook includes vital features and homes facts at the results of sterilization equipment on plastics and elastomers.

Extra info for Modern Cryptography: Protect Your Data With Fast Block Ciphers

Example text

This makes it necessary to provide a comprehensive range of possible protection tools and functions. It makes the most sense to first protect the most informative channels of data leakage, such as: the possibility of quickly and easily copying data onto removable high-capacity media, unsecure communication channels, and the theft of a hard drive or a whole computer. The problem of barring these leakage channels is complicated by the requirement that data protection procedures shouldn't lead to a noticeable decrease in the performance of the CS.

There were a number of successful attacks on the DES, RC5, and Blowfish cryptosystems when a small number of enciphering rounds was used. Obviously, one can choose a size of a random block R that will make reduced versions of these ciphers secure against known attacks. For this purpose, the r = b − 1 value will do. Ciphers with a simple probabilistic mechanism have the following advantages: ♦ The security of the known block ciphers can be significantly increased. ♦ In a sense, it is possible to control the cipher's security by choosing various values for the r/b ratio.

During probabilistic encryption, for the given text T, we generate one of the possible cryptograms — for example, Ci, chosen from the {C1, C2, …, CN} set according to the probabilistic law. A cryptanalyst can correctly choose the original text, but he or she cannot verify this fact, since, when encrypting, he or she will generally obtain another cryptogram from the set of possible variants. Having encrypted T, the cryptanalyst will get Cj = Ez(T). The probability that Cj = Ci is 1/N. The cryptanalyst has to guess not only the original text, but also the value of a randomly selected parameter that controls the probabilistic encryption process.

Download PDF sample

Rated 4.48 of 5 – based on 34 votes