[or-cvs] a url for better reference

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Update of /home2/or/cvsroot/tor/src/common
In directory moria:/home/arma/work/onion/cvs/tor/src/common

Modified Files:
	crypto.c 
Log Message:
a url for better reference


Index: crypto.c
===================================================================
RCS file: /home2/or/cvsroot/tor/src/common/crypto.c,v
retrieving revision 1.152
retrieving revision 1.153
diff -u -d -r1.152 -r1.153
--- crypto.c	8 Aug 2005 21:59:48 -0000	1.152
+++ crypto.c	15 Aug 2005 01:03:50 -0000	1.153
@@ -1374,6 +1374,7 @@
 
 /** Check for bad diffie-hellman public keys (g^x).  Return 0 if the key is
  * okay, or -1 if it's bad.
+ * See http://www.cl.cam.ac.uk/ftp/users/rja14/psandqs.ps.gz for some tips.
  */
 static int
 tor_check_dh_key(BIGNUM *bn)