Stockholm university
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Mathematics of cryptography

In this course we look at a number of asymmetric cryptosystems, the mathematical problems underlying them, and different algorithms to solve these problems.

The course covers basic concepts in encryption and the mathematical problems, with associated mathematical theory, which is the basis for applications in asymmetric cryptology.

Mathematical problems included are integer factorisation, discrete logarithms in prime fields and elliptic curves, and the shortest vector problem in lattices. Different algorithms for solving these mathematical problems are studied with a focus on complexity.

Algorithms covered are a subset of RSA, DH, El Gamal, ECDH, NTRU, binary exposure, Shank's baby-step giant-step, Pohlig-Hellman, quadratic sieves and Pollard's rho.