Lecture Notes in Computer Science Volume 149, 1983, pp 71-128

Encrypting by Random Rotations

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Abstract

This paper gives some well-known, little known, and new results on the problem of generating random elements in groups, with particular emphasis on applications to cryptography. The groups of greatest interest are the group of all orthogonal n × n matrices and the group of all permutations of a set. The chief application is to A. D. Wyner’s analog scrambling scheme for voice signals.