Assume the following 64-bit DES key (expressed in hexadecimal): FEFE FEFE FEFE FEFE

(a) What is the term for such a key?

(b) State the value of each of the 48-bit round keys for this DES key.

(c) Is this a secure DES key? Why or why not?

Posted Date: 3/13/2013 3:01:07 AM | Location : United States

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