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Unformatted text preview: The ciphertext USAXCYKUSAPNUCOQMHIJESXKYHVS was produced by a Vigenere cipher. What is the likely key length? 6. Vigenere cipher is a polyalphabetic cipher that uses multiple Cesar ciphers. Design a polyalphabetic cipher that uses multiple Playfair ciphers. 7. Do Problem 2.20 on the 5 th edition (or 2.21 on the 4 th edition) of Stallings. This question is about steganography. The key is a sequence of single-digit integers, namely 7, 8, 7, 6, 5, 6, 5, 4, Hint: what do these single-digit integers indicate?...
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This note was uploaded on 01/22/2011 for the course CSE 651 taught by Professor Tenh.lai during the Spring '10 term at Ohio State.
- Spring '10