1/1 
|
DES cores
by smearing on Sep 1, 2006 |
smearing
Posts: 1 Joined: Sep 8, 2008 Last seen: Apr 15, 2011 |
||
|
I've tried to verify the results of the three available DES cores to
software implementations without any luck. I wrote software in C, C++ and Java using various techniques and libraries and these three methods produce repeatable results. However, I modified test benches to input exactly the same keys and data for the RTL, but cannot correlate the results. I've been very careful about transposing my data between the software and hardware syntax, i.e. sw: char key[] = { 0x34, 0x56, 0x23, ...}; hw: key = x"...23 56 34" Has anyone verified the results of the encryption cores with software? Any idea what I might be doing wrong? Chris |
|||
|
DES cores
by Unknown on Sep 1, 2006 |
Not available! | ||
|
smearing at yahoo.com wrote:
Any idea what I might be doing wrong?
The obvious one... endianity... ???
Regards,
--
Mark McDougall, Engineer
Virtual Logic Pty Ltd, http://www.vl.com.au>
21-25 King St, Rockdale, 2216
Ph: +612-9599-3255 Fax: +612-9599-3266
|
|||
|
DES cores
by Unknown on Sep 1, 2006 |
Not available! | ||
|
Mark McDougall wrote:
smearing at yahoo.com wrote:
Any idea what I might be doing wrong?
BTW, since you have source to both your software implementation and the
hardware implementation, and can simulate the latter, surely it's not
going to be very difficult to work out what's going wrong and where by
looking at each step of the encryption????
Regards,
--
Mark McDougall, Engineer
Virtual Logic Pty Ltd, http://www.vl.com.au>
21-25 King St, Rockdale, 2216
Ph: +612-9599-3255 Fax: +612-9599-3266
|
|||
1/1