Titlebook: Algebraic Aspects of Cryptography; Neal Koblitz Book 1998 Springer-Verlag Berlin Heidelberg 1998 Algebra.DES.Digital Signature Algorithm.a

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Algorithms and Computation in Mathematicshttp://image.papertrans.cn/a/image/152550.jpg

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Cryptography,Broadly speaking, the term . refers to a wide range of security issues in the transmission and safeguarding of information. Most of the applications of algebra and number theory have arisen since 1976 as a result of the development of . cryptography.

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Complexity of Computations,if there exists a constant . such that . is always less than . · .. For example, 2. + 3. − 3 = 0(.) (namely, it is not hard to prove that the left side is always less than 3., so 3 can be chosen as the constant . in the definition).

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