applied cryptography - protocols, algorithms, and source code in c

In the original standard the size of p was fixed at

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Unformatted text preview: Keyword Brief Full Advanced Search Search Tips (Publisher: John Wiley & Sons, Inc.) Author(s): Bruce Schneier ISBN: 0471128457 Publication Date: 01/01/96 Search this book: Go! Previous Table of Contents Next ----------- Chapter 20 Public-Key Digital Signature Algorithms 20.1 Digital Signature Algorithm (DSA) In August 1991, The National Institute of Standards and Technology (NIST) proposed the Digital Signature Algorithm (DSA) for use in their Digital Signature Standard (DSS). According to the Federal Register [538]: A Federal Information Processing Standard (FIPS) for Digital Signature Standard (DSS) is being proposed. This proposed standard specifies a public-key digital signature algorithm (DSA) appropriate for Federal digital signature applications. The proposed DSS uses a public key to verify to a recipient the integrity of data and identity of the sender of the data. The DSS can also be used by a third party to ascertain the authenticity of a signature and the data associated with it. This proposed standard adopts a public-key signature scheme that uses a pair of transformations to generate and verify a digital value called a signature. And: This proposed FIPS is the result of evaluating a number of alternative digital signature techniques. In making the selection NIST has followed the mandate contained in section 2 of the Computer Security Act of 1987 that NIST develop standards to “...assure the cost-effective security and privacy of Federal information and, among technologies offering comparable protection, on selecting the option with the most desirable operating and use characteristics.” Among the factors that were considered during this process were the level of security provided, the ease of implementation in both hardware and software, the ease of export from the U.S., the applicability of patents, impact on national security and law enforcement and the level of efficiency in both the signing and verification functions. A number of techniques were deemed to provide appropr...
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