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Curve25519, implemented as a C++ Windows Runtime Component, consumable in UWP.

Curve25519 and Ed25519 sign/verify, implemented in C# as a portable class library.

TextSecure helper library for Universal Windows applications. Based on https://github.com/WhisperSystems/libtextsecure-java

libaxolotl implementation in C#, based on libaxolotl-java.

NuGet package for libphonenumber as a UWP class library. This is only a temporary solution until the original project takes over this aspect of releases.