On Fri, Dec 01, 2017 at 11:43:18AM +0100, Kamil Konieczny wrote: > On 01.12.2017 11:24, Antoine Tenart wrote: > > > > Yes the last_req flag is set for the last request, so when > > digest/finup/final are called. But no we can't copy the result into the > > state based on this as an user might want to perform multiple updates, > > then export the context, to import it again before sending more updates. > > IMHO set them to false in hash update and init, set finish false and last_req true > for hash final, and set both true for hash finup and digest. > > As Herbert tells in https://www.spinics.net/lists/linux-crypto/msg28658.html > you should support scenario export + update/finup, so basically export is reading > state but it do not halt your hash driver. Except if you import another state in the meantime. Antoine -- Antoine Ténart, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
