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bzrtp is an opensource implementation of ZRTP keys exchange protocol.
The library written in C 89 is fully portable and can be executed on many platforms including both ARM processor and x86.
Licensing: The source code is licensed under GPLv2.
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Compatibility with RFC6189 - ZRTP: Media Path Key Agreement for Unicast Secure RTP
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*** Mandatory but NOT implemented
- Sas Relay mechanism (section 7.3)
- Error message generation, emission or reception(which doesn't imply any security problem, they are mostly for debug purpose)
*** Optional and implementd
- multistream mode
- cacheless implementation
- key agreement DH2048
*** Optional and NOT implemented
- zrtp-hash attribute in SDP
- Go Clear/Clear ACK messages
- SAS signing
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