pretty Easy privacy (p≡p or pEp) is a pluggable data encryption and verification system, which provides automatic cryptographic key management through a set of libraries (providing p≡p adapters for application developers' used programming languages and development environments) for written digital communications. Its main goal is to turn the default in written digital communications towards end-to-end encryption for all users in the easiest way possible and on all channels they use already today, including e-mails, SMS, or other types of messages.
It exists as a plugin for Microsoft Outlook and Mozilla Thunderbird and also as a mobile app for Android and iOS. p≡p also works under Microsoft Windows, Unix-like and, Mac OS X operating systems. Its cryptographic functionality is handled by an open-source p≡p engine relying on already existing cryptographic implementations in software like GnuPG, a modified version of netpgp (used only in iOS), and (as of p≡p v2.0) GNUnet.
In its default configuration, p≡p does not rely on a web of trust or any form of centralized trust infrastructure, but instead lets users verify each other's authenticity by comparing cryptographic fingerprints in the form of natural language strings, which the p≡p developers have chosen to call "trustwords".
pretty Easy privacy was first released in 2016. All source code of software already released, that is of p≡p engine, adapters, apps and addons (including Microsoft Outlook) are free and open-source software.
In March 2021 it was revealed that the company behind pEp paid for fake reviews for their apps.
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