ssh-pkcs11-helper is used by ssh(1), ssh-agent(1), and ssh-keygen(1) to access keys provided by a PKCS#11
token.
ssh-pkcs11-helper is not intended to be invoked directly by the user.
A single option is supported:
-v Verbose mode. Causes ssh-pkcs11-helper to print debugging messages about its progress. This is
helpful in debugging problems. Multiple -v options increase the verbosity. The maximum is 3.
Note that ssh(1), ssh-agent(1), and ssh-keygen(1) will automatically pass the -v flag to
ssh-pkcs11-helper when they have themselves been placed in debug mode.