Titlebook: A Course in Number Theory and Cryptography; Neal Koblitz Textbook 1994Latest edition The Editor(s) (if applicable) and The Author(s), unde

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Astrid Mattes,Sieglinde RosenbergerBasic notions. Cryptography is the study of methods of sending messages in disguised form so that only the intended recipients can remove the disguise and read the message. The message we want to send is called the . and the disguised message is called the ..

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Marian Burchardt,Ines MichalowskiThere are many situations where one wants to know if a large number . is prime. For example, in the RSA public key cryptosystem and in various cryptosystems based on the discrete log problem in finite fields, we need to find a large “random” prime.

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Astrid Mattes,Sieglinde Rosenbergerssible ciphertext message units. Actually, the term “cryptosystem” is more often used to refer to a whole family of such transformations, each corresponding to a choice of . (the sets . and ., as well as the map ., may depend upon the values of the parameters).

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978-1-4612-6442-2The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Science+Busines

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Textbook 1994Latest editioner power and sophistica­ tion that has influenced some of the questions being studied by number theorists, giving rise to a new branch of the subject, called "computational number theory. " This book presumes almost no background in algebra or number the­ ory. Its purpose is to introduce the reader

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Public Key,. Moreover, clinicians can also effectively advocate for change at governmental levels, complementing individual attempts to minimize personal risk. This chapter reviews recent advances enabling healthcare professionals in practice and in training to take an environmental history and talk with patie