End-to-end encryption library featuring ECC and PFS

 LIME is an end-to-end encryption library for one-to-one and group
 instant messaging, allowing users to exchange messages privately and
 asynchronously. It uses Curve448-Goldilocks for key agreement and
 employs a double ratchet algorithm for perfect forward secrecy.
 .
 LIME is composed of a portable client library coupled with a public
 key server developed by Belledonne Communications to allow end-to-end
 encryption for messaging, without having to exchange cryptographic
 keys simultaneously.
 .
 The library exposes a C, C++ and Java API for easy integration in
 mobile and desktop environments.
 .
 This package contains everything needed to build software written
 against LIME.