The text provides a detailed discussion of polyalphabetic substitution cipher systems plus the theory of the solution of repeating-key systems. Theory of indirect symmetry of position in secondary alphabets is discussed, as well as the application of principles of indirect symmetry of position. Text includes problems for the student plus computer programs written in BASIC.
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Book Description Aegean Park Press, 1984. Softcover. Book Condition: Near Fine. Dust Jacket Condition: No Dust Jacket. First Edition. A crisp clean tight copy showing modest shelf/edge wear only. No marks and nearly unread in appearance aside from lightly faded spine and Previous Owner's name on title page! ; 0.5 x 10.8 x 8.2 Inches. Bookseller Inventory # 9305