The book contains surveys on the current state and the historical background of cryptography. It will be useful to mathematicians, computer scientists and engineers, as well as historians with an interest in cryptography. Reminiscences and Reflections of a Codebreaker.- FISH and I.- Sturgeon, The FISH BP Never Really Caught.- ENIGMA and PURPLE: How the Allies Broke German and Japanese Codes During the War.- The Geheimschreiber Secret.- The RSA Public Key Cryptosystem.- Number Theory and Cryptography (using Maple).- A Talk on Quantum Cryptography or How Alice Outwits Eve.- The Rigidity Theorems of Hamada and Ohmori, Revisited.- Counting Prime Divisors on Elliptic Curves and Multiplication in Finite Fields.- On Cyclic MDS-Codes.- Computing Roots of Polynomials over Function Fields of Curves.- Remarks on codes from modular curves: MAPLE applications. The book contains surveys on the current state and the historical background of cryptography. It will be useful to mathematicians, computer scientists and engineers, as well as historians with an interest in cryptography.
