Length of Triple DES algorithm

Tim Mather tmmather at SYMANTEC.COM
Tue Sep 12 14:32:56 EDT 2000


     Triple DES can be implemented in at least two different ways, that I
am aware of.  Key #1 = key #3 with key #2 being different = 112 bits (2 *
56 bits).  "True" triple DES is keys #1, #2, and #3 all being different
from each other = 168 bits (3 * 56 bits).  How vendors get to different
lengths is interesting to me.
     Thanks.

Tim





Matthew Harding <matt at NEUROTRAIN.COM>@SECURITYFOCUS.COM> on 09/12/2000
07:39:12 AM

Please respond to Matthew Harding <matt at NEUROTRAIN.COM>

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