This is why mod_log_iphash adds a random, unknown 128 character string in front of the IPv4 address before hashing with MD5. So you have to search within 64^128 * 2^32 possibilities instead of just 2^32. :-)
On 06.10.2010 07:16, Ted Dunning wrote: > It is less a matter of time than you calculate. > > For IPV4, you only have 32 bits to search. > > On Tue, Oct 5, 2010 at 4:13 PM, Franz Schwartau <[email protected]>wrote: > >> Yes, of course, but all (cryptographic) hash functions are "vulnerable" >> to brute force attacks. It's just a question of effort/time.
