SSH-PKCS11-HELPER(8) System Manager's Manual SSH-PKCS11-HELPER(8)

ssh-pkcs11-helperOpenSSH helper for PKCS#11 support

ssh-pkcs11-helper [-v]

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:

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.

ssh(1), ssh-agent(1), ssh-keygen(1)

ssh-pkcs11-helper first appeared in OpenBSD 4.7.

Markus Friedl <>

April 29, 2022 Linux 6.8.7-arch1-1