Motivation:
a137291ad1 introduced a way to get the most speed out of OpenSSL by not only caching keymaterial but pre-compute these. The problem was we missed to check for null before doing an instanceof check and then a cast which could lead to a NPE as we tried to cast null to Exception and throw it.
Modifications:
Add null check and unit test.
Result:
No more NPE when keymaterial was not found for requested alias.
df08467d7c