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Hint before challenge ends

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  • #44637
    Zextrigate3
    Member

    Hi Harry
    Would you be so kind as to put up a less around the Bush hunt as to how to solve 7B please, I’m really struggling and would like to learn how to solve this type of cipher

    #44643
    Harry
    Keymaster

    OK, the text in 7B is arranged in a square because it should be read in columns not rows! Once you know that then you can carry out a straightforward analysis. Frequency checks on individual characters shows the distribution is a bit flat for a monoalphabetci substitution, so it is probably poyalphabetic, and this is indeed a Vigenere cipher. You can use the Index of Coincidence to try to find the period of that Vigenere, and then crack it as usual. Does that help?

    Harry

    #44646
    Zextrigate3
    Member

    Thanks Harry
    Got it finished just in time

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