polkit-kde-agent-1 - 4:5.20.5-1 main

PolicyKit is an application-level toolkit for defining and handling the policy
that allows unprivileged processes to speak to privileged processes.
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It is a framework for centralizing the decision making process with respect to
granting access to privileged operations (like calling the HAL Mount() method)
for unprivileged (desktop) applications.
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PolicyKit-Kde provides a D-Bus session bus service that is used to
bring up authentication dialogs used for obtaining privileges.