Polyalphabetic cipher - PowerPoint PPT Presentation

An Introduction to Cryptography

An Introduction to Cryptography. What is cryptography?. noun krip-ˈtä-grə-fē : the process of writing or reading secret messages or codes. “ Encryption ”: to put into a format that is unreadable to unauthorized individuals “ Cipher ”: a method of encryption, or a code. Basics. History.

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CAP Cryptographic Analysis Program

CAP Cryptographic Analysis Program. Breaking the Vigenere Cipher Help Presentation. Press Enter or click on your mouse button to continue. Breaking Vigenere. For more than 300 years cryptanalysts worked on the problem of breaking a polyalphabetic cipher (like the V-cipher)

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