des key searching

fatih

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Joined
May 2, 2003
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1
Hi,

a complete plaintext/ciphertext pair is known, plaintext is 64 bits long and contains only numeric number 0-9 .
My question is : Is there any software that can search the key and then use this key to decrypt another ciphertext in this system.
also I will be gratefull if someone help me recommending a software that is capable of generating a 16-bits Cyclic Redundancy Check (CRC) from a 50-bits plaitext.

Thank you all, with my best regards .


Fatih
 
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