• Neal Koblitz
Part of the Graduate Texts in Mathematics book series (GTM, volume 114)


Basic 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 plaintext and the disguised message is called the ciphertext.


Frequency Analysis Affine Transformation Single Letter Common Letter Multiplicative Inverse 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    L. S. Hill, “Concerning certain linear transformation apparatus of cryptography,” American Math. Monthly, 38 (1931), 135–154.CrossRefGoogle Scholar
  2. 2.
    D. Kahn, The Codebreakers, the Story of Secret Writing, Macmillan, 1967.Google Scholar
  3. 3.
    K. H. Rosen, Elementary Number Theory and Its Applications, 3rd ed., Addison-Wesley, 1993.Google Scholar

Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Neal Koblitz
    • 1
  1. 1.Department of MathematicsUniversity of WashingtonSeattleUSA

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