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 GPLv3.
BZRTP library is dual-licensed and can be distributed either under a GNU GPLv3 license (open source, see LICENSE.txt) or under a proprietary license (closed source).
Copyright © Belledonne Communications SARL Johan Pascal is the original author of BZRTP.
- 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)
- multistream mode
- cacheless implementation
- zrtp-hash attribute in SDP
- Go Clear/Clear ACK messages
- SAS signing
- Hash : SHA-256, SHA-384
- Cipher : AES-128, AES-256
- SAS rendering: B32, B256(PGP word list)
- Auth Tag : HS32, HS80
- Key Agreement : DH-2048, DH-3072, X25519, X448
Note: X25519 and X448 Key agreements(RFC7748) are not part of RFC6189 and supported only when bctoolbox[1] is linking libdecaf[2]
- bctoolbox[1]: portability layer and crypto function abstraction
cmake . -DCMAKE_INSTALL_PREFIX=<prefix> -DCMAKE_PREFIX_PATH=<search_paths>
make
make install
CMAKE_INSTALL_PREFIX=<string>: install prefixCMAKE_PREFIX_PATH=<string>: column-separated list of prefixes where to search for dependenciesENABLE_SHARED=NO: do not build the shared libraryENABLE_STATIC=NO: do not build the static libraryENABLE_STRICT=NO: build without the strict compilation flagsENABLE_TESTS=YES: build non-regression tests
Our CMake scripts may automatically add some paths into research paths of generated binaries.
To ensure that the installed binaries are striped of any rpath, use -DCMAKE_SKIP_INSTALL_RPATH=ON
while you invoke cmake.
Rpm packaging bzrtp can be generated with cmake3 using the following command: mkdir WORK cd WORK cmake3 ../ make package_source rpmbuild -ta --clean --rmsource --rmspec bzrtp--.tar.gz
- [1] git://git.linphone.org/bctoolbox.git or http://www.linphone.org/releases/sources/bctoolbox
- [2] https://sourceforge.net/projects/ed448goldilocks/