Gpg4kde describes a maintained combination of software components for email and file encryption for GNU/Linux and similiar operating systems.
Both relevant cryptographic standards OpenPGP and S/MIME are supported. Notably Gpg4kde was found to be compatible to the German Sphinx specification for a governmental PKI in the early 2000s.
Gpg4kde version 3.0 was based on Kontact/KMail 3.5 'enterprise'. It contained a few stability improvements which were later merged with upstream at KDE.
The predecessor of Gpg4kde was Ägypten-2 which aimed at establishing all basic functionalities.
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