Zfone is VoIP encryption software, designed by Phil Zimmermann of PGP. This SDK is suitable for inclusion in software VoIP clients, firmware for hardware VoIP phones, VoIP PBX servers, mobile VoIP clients, and SIP border control servers. The SDK enables interoperation with the rest of the ZRTP community.
WWW: https://github.com/juha-h/libzrtp
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