The science and mathematics of encoding and decoding information.
See also Cryptarithm, Knapsack Problem, Public-Key Cryptography
References
Davies, D. W. The Security of Data in Networks. Los Angeles, CA: IEEE Computer Soc., 1981.
Diffie, W. and Hellman, M. ``New Directions in Cryptography.'' IEEE Trans. Info. Th. 22, 644-654, 1976.
Honsberger, R. ``Four Clever Schemes in Cryptography.'' Ch. 10 in Mathematical Gems III.
Washington, DC: Math. Assoc. Amer., pp. 151-173, 1985.
Simmons, G. J. ``Cryptology, The Mathematics of Secure Communications.'' Math. Intel. 1, 233-246, 1979.