Cryptology in Transition
Abraham Lempel · ACM Computing Surveys · 1979
The emphams of this survey Is on the new concept of pubhc-key cryptosystems, the recently proposed schemes for theur implementation, and the problems pertaining to cryptocomplexity Also presented are a brief outline of classmal cryptoiogy, the principles underlymg present-day cryptology, and a short descnption of the now official Data Encryption Standard.