How to list valid certificate aliases in a YubiKey?

[straffin]

Trying to sign a Windows EXE using Jsign and a certificate stored on a YubiKey 5C NFC FIPS key. There's only the one certificate on the key, but jsign --storetype YUBIKEY --storepass xxxxxxx--tsaurl http://timestamp.sectigo.com --verbose <filename> returns jsign: No certificate found in the keystore SunPKCS11-yubikey. There's no "alias" information displayed in the YubiKey tools (not that I can find, anyway), so I'm not quite sure what to use as an alias to find the key. Can anyone point me in the right direction?

[straffin]

Bah. I had the cert in the wrong slot. Please delete this question if you have the ability to do so.

[ebourg]

The key was in the slot 9A (authentication) instead of 9C (signature) ? If there is only one certificate on the key Jsign should select it automatically, and if there are more it should list the slots available in the error message.

[straffin]

Even better... I had the Private Key in 9A and the Certificate in 9C. Put the cert in 9A with the key and it worked fine. #facepalm