When keys were configured without passphrase, number of iterations in metadata is equal to -1. if we then wanted to attach provider (or change keys) and forget about '-p' flag it failed on assertion (quite ok, without assertion it could call PKCS#5v2 with 4294967295 iterations).
When keys were configured without passphrase, number of iterations in
metadata is equal to -1. if we then wanted to attach provider (or change
keys) and forget about '-p' flag it failed on assertion (quite ok, without
assertion it could call PKCS#5v2 with 4294967295 iterations).

Instead of failing on assertion, remind about '-p' flag.

MFC after:	3 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase