libpam-kwallet4 4:5.12.8-0ubuntu0.1 (amd64 binary) in ubuntu bionic

 The KDE Wallet system provides a secure way to store passwords and other
 secret information, allowing the user to remember only a single KDE Wallet
 password instead of numerous different passwords and credentials.
 .
 This package provides a simple PAM integration for KWallet, so you can log in
 to open a KWallet.