On Mon, Feb 2, 2015 at 12:03 PM, Leigh <lei...@gmail.com> wrote: > > In Rogaway's own OCB FAQ it states: > > The number τ, the tag length of the scheme, is, like the blockcipher > E, a parameter of the mode. It’s a number 0 ≤ τ ≤ 128. > > http://web.cs.ucdavis.edu/~rogaway/ocb/ocb-faq.htm >
The OCB is just in openssl master and won't be released for quite a some time (scheduled for 1.1.0) so think that you don't have to worry about that now ;)
