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Math Help - Hill Cipher, how did they do it ?

  1. #1
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    Hill Cipher, how did they do it ?

    Hi,
    I'm trying to study cryptography and by following wikipedia article on hill cipher, I'm finding hard to understand how they did the decryption. Hill cipher - Wikipedia, the free encyclopedia

    My inverse matrix mod 26 is 8 5 10 | 21 8 12 | 21 5 18, while on wiki er have 8 5 10 | 21 8 21 | 21 12 8 | mod 26.

    I dont know how this result was achieved, is there any help on this ?

    Thanks for looking
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  2. #2
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    Already solved, thanks for looking =D
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