Security Fundamentals for E-Commerce by Vesna Hassler

By Vesna Hassler

If you are charged with retaining the safety of e-commerce websites, you wish this specific e-book that gives an in-depth figuring out of uncomplicated safety difficulties and appropriate e-commerce ideas, whereas assisting you enforce trendy such a lot complex safety technologies.From designing safe net, e-commerce, and cellular trade purposes: to securing your inner community: to offering safe employee/user authentication, this state of the art booklet can provide a worthy protection viewpoint you will not locate in different resources.Flexibly based to provide you a entire assessment or that will help you quick pinpoint issues of fast hindrance, the ebook comprises sections on easy safeguard mechanisms, the categorical requisites of digital cost structures, verbal exchange safeguard, and internet- and Java-related protection matters. a whole part is dedicated to the protection elements of code and patron mobility, particularly cellular brokers, cellular units, and shrewdpermanent playing cards. Over 70 illustrations aid make clear details during the booklet.

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Shamir, and L. Adleman [12], whose family names’ initials form the name of the algorithm. The difficulty of breaking RSA is based on the factoring problem. However, it has never been mathematically proven that it is equally difficult to factor a large composite number as to break RSA. In RSA, the large composite number is referred to as the modulus n = pq, p and q being large primes. Public key or public exponent e can be chosen as a prime number relatively prime to ( p − 1)(q − 1). Private key or private exponent d is then chosen to satisfy the following congruence: ed ≡ 1mod f(n ) (Eq.

About 300 fast workstations and PCs had spent about 35 years of computing time to find the prime factors. They were running in parallel, mostly overnight and on weekends, so the whole task was accomplished in about seven months. In practical terms, this means that the key size of 512 bits is no longer safe against even a moderately powerful attacker. Some 25 years ago it was estimated that 50 billion years of computing time would be needed to factor a 512-bit number, so the Dutch result is a major scientific breakthrough.

DES Today The fastest DES chips today achieve an encryption speed of approximately 1 Gbps with a 56-bit key. The fastest software solutions are much slower, about 10 Mbps. The latest record in cracking DES (as of September 1999), set by the Electronic Frontier Foundation’s “Deep Crack” is 22 hours and 15 minutes [10]. It involved about 100,000 PCs on the Internet. 6 The task was to find a 56-bit DES key for a given plaintext and a given ciphertext. 3 Other Symmetric Encryption Algorithms IDEA (International Data Encryption Algorithm), proposed in 1992, was the “European answer to DES” and to the United States export restrictions on cryptographic algorithms.

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