Added important note about pin caching #135

5 years ago · 4524c11632
parent 970d37b7f7
commit 4524c11632
1 changed files with 2 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -1578,6 +1578,8 @@ max-cache-ttl 120
 pinentry-program /usr/bin/pinentry-curses
 ```

+**Important** The `cache-ttl` options do **NOT** apply when using a YubiKey as a smartcard as the PIN is [cached by the smartcard itself](https://dev.gnupg.org/T3362). Therefore, in order to clear the PIN from cache (smartcard equivalent to `default-cache-ttl` and `max-cache-ttl`), you need to unplug the YubiKey.
+
 **Tip** Set `pinentry-program /usr/bin/pinentry-gnome3` for a GUI-based prompt.

 On macOS, use `brew install pinentry-mac` and adjust the program path to suit.