The PBC pairing-based cryptography library. See COPYING for license.Ben LynnChanges between PBC version 0.4.9 and 0.4.8* Patched memory leak for D, G pairings (reported by Michael Cheng)Changes between PBC version 0.4.8 and 0.4.7* configure.ac fixes (Joe Cooley)* example/zss.c fixes (Joe Cooley)Changes between PBC version 0.4.7 and 0.4.6* Bugfix: element_cmp for zero case in prime field* Symmetric pairing checks for other examples* Faster D, G pairingsChanges between PBC version 0.4.6 and 0.4.5* Type G pairings (embedding degree 10)* Bugfix for version 0.4.5 random point generationChanges between PBC version 0.4.5 and 0.4.4* Symmetric pairing checks for example/hess.c and example/paterson.c* Shipsey-Stange algorithm for type E pairing (not used by default)* Random point generation is faster in some cases* Added benchmark/ellnet.cChanges between PBC version 0.4.4 and 0.4.3* Optimizations for most pairings* Shipsey-Stange algorithm for type A pairing (not used by default)Changes between PBC version 0.4.3 and 0.4.2* Added pairing_is_symmetric function.* element_from_bytes for G1, G2 check input is valid.* Added -e option for pbc.Changes between PBC version 0.4.2 and 0.4.1* Added element_set_str, element_snprintf, element_snprint functions.* Added fromstr function and string handling to pbc/pbc test program.* Minor bugfixes and cleanup.Changes between PBC version 0.4.1 and 0.4.0* Removed test subdirectory: moved programs to new subdirectories:  - benchmark: programs for obtaining timings.  - example: pairing-based cryptosystem demos.  - gen: programs that generate pairing parameters.  - pbc: the "Pairing-Based Calculator".  - guru: for testing obscure parts of the library. Most need not    know of its existence.* Documentation for some of the above programs.* New cryptosystem demos (by Dmitry Kosolapov).Changes between PBC version 0.4.0 and 0.3.17* Signatures and broadcast encryption spun off into new libraries.* Memory leaks plugged, including two that were relatively low-level  (and hence serious).* New debugging facilities: if PBC_DEBUG is defined, during runtime  PBC will check that elements from different algebraic structures are not  mixed.* If a memory allocation fails, PBC prints a message and quits (rather  than quietly continuing causing unpredictable behaviour). * Custom memory allocation.* All PBC header files given "pbc" prefix.* Minor fixes.