# Yubikey PIV PKCS#11 > This project is forked form: https://github.com/google/native-pkcs11
## OpenSC pkcs11-tool Alias: ```shell alias p11='pkcs11-tool --module /FULLPATH/libyubikey_piv_pkcs11.dylib' ``` List certificates: ```shell p11 --list-object --type cert ``` ## OpenSSH Alias: ```shell alias sshp11='ssh -I /FULLPATH/libyubikey_piv_pkcs11.dylib' ``` SSH server: ```shell sshp11 root@example.com ``` ## Configuration ### Turn on retired slots Default retired slots are disabled, turn on: ```shell export ENABLE_RETIRED=1 ``` ### Slot filter ```shell export SLOT_FILTER=9a,83 ``` ### Pin entry Default pin entry command: ``` /usr/local/MacGPG2/libexec/pinentry-mac.app/Contents/MacOS/pinentry-mac ``` Set pin entry command by env: ```shell export PIN_ENTRY_CMD=pin-entry-command ``` or edit file `~/.pinentry.cmd`, if no pin entry found, will use `pinentry`.