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Introduction to CAP: A Comprehensive Cryptographic Analysis Program

CAP (Cryptographic Analysis Program) is a versatile tool designed for exploring classical and contemporary ciphers. It combines three functionalities: encrypting and decrypting text using various algorithms, offering tools for breaking unknown ciphers, and presenting a game to challenge users with random ciphers. This presentation will guide you through CAP's features, including menus for plaintext and ciphertext handling, ciphers available, blocking for readability, game options for cipher challenges, and tools for analyzing and monitoring code-breaking activities.

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Introduction to CAP: A Comprehensive Cryptographic Analysis Program

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  1. CAPCryptographic Analysis Program General Help Presentation Press Enter or click on your mouse button to continue

  2. What is CAP? • CAP is a general purpose tool for the study of classical (and some contemporary) ciphers • CAP is really three related programs in one • a program that will encrypt and decrypt text using your choice of several algorithms • a set of tools for breaking unknown ciphers • a game which will generate random ciphers and challenge you to break them This presentation will introduce you to the general features of CAP

  3. Contents • Click on the items below to jump to help on the specific topic • Or just continue to advance through this presentation

  4. Enter Ciphertext Enter Plaintext Main Window • When you first open CAP this is the main window:

  5. Convert to ASCII Converting to numbers is usefulfor a variety ofciphers Plaintext Menu • The plaintext menuallows you to open,save, print, or convertthe plaintext

  6. Ciphertext Menu • The ciphertext menuallows you to open,save, print, or convertthe ciphertext

  7. CipherText without spacing CipherText with blocking ppnzyklttekwpovbzy uioittnbzyqaceeropi ppnzy kltte kwpov bzy uioit tnbzy qacee ropi Block Menu • Blocking is the process of separating the ciphertext into segments of fixed size. • This makes it easier to read without giving away standard word spacing Select Block fromMain Menu Bar

  8. Ciphers Menu • The Ciphers Menu lists all the possible algorithms which CAP is capable of running • More are being added all the time • To implement a cipher, click onits name in the list Additional Help on each cipheris available from the main help screenor from the help feature of eachindividual cipher

  9. Autosolve Menu • Autosolve is not active at this time . . .

  10. Game Menu • CAP will challenge you with random ciphers • Select the Games menuoption • The instructions on the screenand the game help featurewill explain the details ofplaying against CAP

  11. Random Menu • CAP will run standardized randomness tests against binary strings

  12. Integers Menu • CAP provides a tool for long integer arithmetic

  13. Monitor Menu • CAP can monitor your code breaking activities and provide a record of your use of other tools • It may help you avoid redoing tests

  14. Analysis Bar • The Analysis Bar offers tools than may prove useful in breaking ciphers

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