Hello, your analysis is right. It does only pairwise consistency test as the KAT is impossible to do for regular DSA and ECDSA due to random nonce being input of the signature algorithm and thus the signature always changes. Tomas On Fri, 2021-08-27 at 22:47 +0530, Nagarjun J wrote: > Hi, > > Does openssl-3.0.0 really does ecdsa KAT ? The post test logs says > "ECDSA KAT :PASS. But when i debuged the code it actually doing ECDSA > pairwise consistency test. > > Thanks, > Nagarjun -- Tomáš Mráz No matter how far down the wrong road you've gone, turn back. Turkish proverb [You'll know whether the road is wrong if you carefully listen to your conscience.]