MATH 421
Number Theory and Cryptography
Shippensburg University of Pennsylvania · UGRD · Fall 2026
1 section
Catalog description
Introduction to a selection of topics from the related fields of Number Theory and Cryptography. Topics may include congruence arithmetic, primitive roots, quadratic residues, perfect numbers, Pythagorean triples, sums of squares, Fermat’s Last Theorem, and primality testing, various substitution ciphers including affine, Vigenere, and Hill ciphers and the RSA public key encryption system with several variations. Algorithms for each encryption scheme discussed will be introduced and implemented.
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Availability not recently verifiedClass #shippensburg_pennsylvania-MATH421Fall 2026UGRD3 credits
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