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It has been also tested with pjsip pjsua on Windows, Linux and Mac OS X platform.

It contains:
  • ZRTP protocol implementation
  • SRTP protocol implementation from libsrtp svn
  • Cryptographic algorithms from libtomcrypt 1.17

Mobile Optimized

Since mobile networks work in a very different way than standard broadband internet there are specific optimizations for the mobile environment:
  • aggressive packet timing and retransmission to work over high latency/packet loss mobile networks

ZRTP features

Key exchange support
  • DH-3072
  •  
    ECDH-256
  •  
    ECDH-384
SRTP encryption
  • AES-128
  •  
    AES-256
Cache support
  • Local cache
  •  
    Self-healing key continuity
Random Number Generation
  • Fortuna Deterministic Random Bit Generator (DRBG)
  •  
    Microphone Audio Sample Entropy Collection
MitM detection
  • Hello hash not corresponding (if SDP zrtp-hash does not match)
  •  
    Cached secret non corresponding (MITM Warning)
  •  
    Wrong HMAC
ZRTP SIP support
  • SDP zrtp-hash attribute

 

Supported Platforms

Zorg has been tested with pjsip integration on the following platforms.
  • Windows
  • Symbian OS 3rd/5th edition
  • iPhone OS 4
  • Mac OS X
  • Linux
Please note that build system could require adjustment on specific platform.