if the password supplied for PKCS12 doesn't verify ask for a new one
if the password supplied for PKCS12 doesn't verify ask for a new one

or if it's NULL and the mac doesn't verify with that either..

fixes #66

akgood/yubico-piv-tool,Yubico/yubico-piv-tool,Yubico/yubico-piv-tool,akgood/yubico-piv-tool,akgood/yubico-piv-tool,akgood/yubico-piv-tool,Yubico/yubico-piv-tool