[168] in Cypherpunks
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daemon@ATHENA.MIT.EDU (Timothy Newsham)
Mon May 3 03:24:10 1993
From: Timothy Newsham <newsham@wiliki.eng.hawaii.edu>
To: cypherpunks@toad.com
Date: Sun, 2 May 1993 21:08:40 -1000 (HST)
I am using the d3des package. So far I have been using the
normal DES routines. I have recently decided to use the
tripple-DES routines but the documentation ( == *.c and *.h )
didnt seem too clear on the point. From what I understand
so far it seems that Ddes() is used for both double
and triple encryption (???) for 64bits in 64bits out.
this is the test code I did, it works, I'd just like to
know for sure if it is using triple des (3*56 bit keys).
thanx.
#include "d3des.h"
unsigned long enkey[96],dekey[96];
main()
{
char *a,b[100],*k;
strcpy(b,"this is a test");
k="testing123423456789212345678";
des3key(k,0); cp3key(enkey); /* set up long keys , encrypt */
des3key(k,1); cp3key(dekey); /* decrypt */
use3key(enkey); Ddes(b,b); /* encrypt b */
write(1,b,8);
use3key(dekey); Ddes(b,b); /* decrypt b */
write(1,b,8);
}
