Smartcard Encryption Guide

Practical steps for using OpenPGP smart cards and hardware tokens with local file encryption.

When smart cards help

Smart cards and hardware tokens reduce routine exposure of private keys on your main workstation. They are useful for people who encrypt frequently and want a stronger operational boundary.

1. Keep keys organized

Use clear labels for card identity, key purpose, and rotation date. Keep a written inventory for each card.

2. Test daily unlock flow

Confirm the PIN flow and device access on your main Mac before you rely on the setup for urgent file work.

3. Plan recovery first

Keep recovery instructions and secure backups in a separate location. Run recovery drills periodically.

Operational checklist

Document card model, serial, and ownership.
Use strong PIN and set a practical lockout strategy.
Verify encryption and decryption workflows before production use.
Store backup materials separately from the hardware token.
Update your backup and recovery notes after key rotation.

Docs Core usage steps and command examples. Download Official macOS release channel. Security Project security model and reporting policy.