On Thu, Aug 19, 2021 at 03:49:14PM +1200, Andrew Bartlett wrote: > I know neither MD4 nor HMAC-MD5 is not flavour of the month any more, > with good reason, but we would not want to go with way of NFSv4 which > is, as I understand it, full Kerberos or bust (so folks choose no > protection). I'm not sure you understand how embarrassing it is to still be using these algorithms. MD4 has been broken for over 25 years, and better algorithms have been recommended for 29 years. Similarly MD5 has been broken for 16 years and better algorithms have been recommended for 25 years (though granted, HMAC-MD5 is more secure than plain MD5 when properly used). Meanwhile SHA-2 is 20 years old and is still considered secure. So this isn't something that changes every month -- we're talking about no one bothering to do anything in 30 years. Of course, if cryptography isn't actually applicable to the use case, then cryptography shouldn't be used at all. - Eric
