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Reply To: The official Challenge 10 tips and hints thread


I also have another question if this one is allowed to be answered? I’ve been experimenting with how column transposition ciphers behave if you don’t add padding to ensure the pt text is a multiple of the key length, and noticed it makes it far trickier to decrypt, since it complicates reconstruction of the shuffled pt rows from the ct.

Do I have to take this into consideration with 10B, or can I assume that padding has been added (if it is needed in whatever transposition cipher has been used) before encrypting?

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