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Keyword To Decrypt

encryption

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1 reply to this topic

#1 Japp

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Posted 14 April 2012 - 01:09 PM

I'm trying to decrypt an encryption. I've already used Caspher. I have the keyword, the plaintext , and

encryption. Need to find out how to find a key word if I just have the encryption and nothing else.
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#2 Alexander

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Posted 14 April 2012 - 02:15 PM

Hello Japp, what is Caspher? A cipher suite? A program? A search result does not come up with anything too revealing.

Need to find out how to find a key word if I just have the encryption and nothing else.

If you do not know the cipher of which created the ciphertext, then you will have very little probability of success.

If you do know, and there are no known attacks to reduce the complexity of search, then you will probably have to exhaustively search for the key.

If the key is forty bits long, roughly required searches is Posted Image

Some more information would be helpful.
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All new problems require investigation, and so if errors are problems, try to learn as much as you can and report back.






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