The PYN app lets you connect with your contacts through a private, dedicated PYN server, protecting all communications between you and them with state-of-the-art encryption algorithms.
• ZRTP key exchange with 521 bit elliptic curve (secp521) Diffie-Hellman, AES-256 and SHA-384
• Calls are encrypted and authenticated by SRTP with AES-256 and 80 bit authentication tags
• All communications between PYN clients and server are protected by TLS 1.2 with ECDHE, AES-256-GCM and SHA-384
• 12 Kb/s Opus codec in CBR mode for the best compromise of quality, performance and security