> Hashes need not be 32-bit. Hashes created using MD5, the default algorithm > used by CFMX, are 128-bit, 32 character strings. CFMX 7 supports SHA-1, > SHA-256, SHA-384 and SHA-512 out of the box, plus you can use > hash functions > provided by any Java security provider you install. SHA-1 creates > a 160-bit > message digest, and the newer versions create hashes using the number of > bits specified in their names. > > FIPS 180-1 describes the SHA/SHS standard: > http://www.itl.nist.gov/fipspubs/fip180-1.htm > > "The SHA-1 is designed to have the following properties: it is > computationally infeasible to find a message which corresponds to a given > message digest, or to find two different messages which produce the same > message digest." > > Of course, what's computationally infeasible now may not be in the future, > in some cases. > > Dave Watts, CTO, Fig Leaf Software > http://www.figleaf.com/
FWIW, Bruce Schneier's discussion of hashing algorithms refers to MD-5 as having been broken, and SHA-1 somewhat on its way towards obsolesence, but not as an emergency. Don't think he'd suggest panic over the state of MD-5 either, but the first reference below includes a link to "a paper demonstrating a technique for finding MD5 collisions quickly: eight hours on 1.6 GHz computer." See here: http://www.schneier.com/blog/archives/2005/03/more_hash_funct.html and: http://www.schneier.com/blog/archives/2005/02/cryptanalysis_o.html Dave Merrill ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:206022 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
