Two hundred and eighty five computers can crack a 56-bit key in one year;ten times as many would do it in a little over a month.
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Q1: You cannot combine the XOR operation with
Q2: To perform the Caesar cipher encryption operation,
Q8: Popular cryptosystems use a hybrid combination of
Q14: The asymmetric encryption systems use a single
Q15: Sequence encryption is a series of encryptions
Q16: DES uses a 64-bit key.
Q16: One encryption method made popular by spy
Q20: The AES algorithm was the first public
Q22: The application header protocol provides secrecy for
Q24: As DES became known as being too
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