Highlights

• Full Python 3.13 compatibility with fixes for removed private APIs
• Python 3.14 support added to CI/CD pipelines (Linux, macOS, Windows)
• Fixed Python 3.12+ integer conversion bugs in C extension modules
• Fixed hanging tests on Python 3.12+

Python 3.13 Fixes

• Replaced _Py_IsFinalizing() with public Py_IsFinalizing() API
• Replaced _PyLong_Format() with PyObject_Str() for integer-to-string conversion
• Fixed PyUnicode_DATA() usage to use PyUnicode_AsUTF8() for null-terminated strings

Python 3.12+ Fixes

• Fixed integer conversion bug in integermodule.c (PyLongObject internal structure changed in Python 3.12)
• Fixed negative number handling in mpzToLongObj() using mpz_abs()
• Fixed hanging tests:
  • RSAGroup.paramgen() with safety limits on Blum-Williams prime generation
  • chamhash_rsa_hw09 with deterministic coprime search
  • Rabin signature test skipped on Python 3.12+ due to randomPrime() issues

CI/CD Updates

• Added Python 3.14 to all CI matrices (Linux, macOS, Windows)
• Added cp313-* and cp314-* to cibuildwheel configuration for wheel builds
• Re-enabled Python 3.12+ on macOS CI

Other Changes

• Replaced deprecated OpenSSL BN_generate_prime with BN_generate_prime_ex
• Added comprehensive integer arithmetic test suite
• Added Docker-based testing environment for Python 3.12+ debugging
• Updated README with supported Python versions table

Installation

pip install charm-crypto-framework==0.61.0

Supported Python Versions

Full Changelog

See CHANGELOG for complete details.

What's Changed

• Added Proxy Re-Encryption interface and schemes by @cygnusv in #98
• setup.py now reads custom libs dirs from config.mk by @lferr in #101
• setup.py sets custom runtime libs dirs from config.mk by @lferr in #102
• Feature/Travis CI configuration by @dennisschroer in #104
• Fix travis not failing when tests fail by @dennisschroer in #106
• Abenc maabe rw15 by @dennisschroer in #108
• Ecc hashing by @lferr in #109
• Uncompressed (de)serialization of PairingGroup Elements by @lferr in #112
• InitPP error handling and checking status by @lferr in #113
• Feature/split tests by @dennisschroer in #115
• Feature/cleanup abe by @dennisschroer in #121
• symcrypto.py: update to allow for AEAD by @locksmithone in #124
• Correcting nomenclature AEAD by @locksmithone in #127
• Add Dockerfile to document installation process by @leafac in #130
• [bug 135] Fix compilation errors with OpenSSL 1.1.0 caused by API change by @ElectroSuccess in #141
• Ciphertext-policy ABE schemes implemented under asymmetric pairing gr… by @sagrawal87 in #151
• added deb installer python script by @tusharjois in #156
• Added recompiled RSTs by @tusharjois in #158
• Add a 254-bit Type-F curve to PBC by @ahrussell in #160
• enable s390 support by @nobody4t in #164
• modified changelog by @tusharjois in #175
• Python2 code in toolbox.msp, issue#155 by @jthure in #178
• BLS signature aggregation by @lovesh in #180
• Update rogue key attack to show that attacker can forge signtures fro… by @lovesh in #181
• fix attack when more than one rogue public key by @lovesh in #182
• Short Randomizable Signatures. David Pointcheval and Olivier Sanders by @lovesh in #183
• Update chameleon hash scheme to generate collision and add additional check in PS scheme by @lovesh in #184
• MuSig: Key Aggregation for Schnorr Signatures (from Blockstream) by @lovesh in #185
• Add modulo reduction for group.init of ZR by @timothymctim in #198
• Fix memory leak when performing modular exponentiation on ECs by @davidstritzl in #199
• Fix two memory leaks in hashing to a curve element by @timothymctim in #200
• Revocable abe scheme yang by @doughgle in #202
• Revocable abe scheme yang by @doughgle in #203
• Protocol class minor problems by @EDVTAZ in #204
• Protocol: robust messaging by @EDVTAZ in #206
• Prevent trivial hash collisions - fixes #201 by @timothymctim in #212
• simplify interface for YLLC ABE scheme by @doughgle in #216
• parameterized policy expressions by @doughgle in #217
• Clean serialization and deserialization and makes it faster by @LaRiffle in #218
• Refactor type-checking for Extended Proxy-Assisted ABE scheme. by @doughgle in #223
• Share benchmark script for YLLC15 scheme. by @doughgle in #221
• Integer hashing by @timothymctim in #213
• Use math.gcd instead of fractions.gcd by @lenerd in #226
• Improve conversion of Python integers to Big Numbers in EC module by @davidstritzl in #211
• Support all-AND policy expressions for testing ABE schemes. by @doughgle in #229
• Add instructions for newer Python versions by @fwdekker in #237
• Fix downcaseTokens issue in policytree.py with pyparsing >=2.4.1 by @raghavkaul in #252
• Support multiple ABEnc adapters with varying schemes by @raghavkaul in #254
• solves #132 by @nikosft in #257
• Changes to fix Relic integration by @friedrichsenm in #262
• docs: fix example by @lrusso96 in #265
• Implemented Lamport OTS by @jthure in #270
• README: Update links to jhuisi.github.io by @dubek in #271
• FIxed the documentation and expamples link in README.md since they are deprecated. by @ChopperCP in #269
• fix multiple definition in benchmarkmodule by @ajisaisena in #280
• added Certificateless Public Key Cryptography by @nikosft in #286
• • Implement PS signature schemes by @ahmedmbakr in #291
• update configure.sh allow arm64 by @jianda1013 in #290
• Implement the paper: "User Collusion Avoidance CP-ABE With Efficient Attribute Revocation for Cloud Storage" by @ahmedmbakr in #298
• Fix for Issue #260 by @terry-fee in #300
• Implement the paper: "Attribute Based Encryption with Privacy Protection and Accountability for CloudIoT" by @ahmedmbakr in #299
• Fix for #303 and some additional issues with PY_SSIZE_T_CLEAN macro by @terry-fee in #305
• Update for python 3.12 by @EliusSolis in #310
• Fix Issue #313 and optimize based on Issue #312 by @BatchClayderman in #314
• Python 3 10 and below by @terry-fee in #317
• Add GitHub Actions workflow for CI by @jakinyele in #318
• docs: fix simple typo, attriute -> attribute by @timgates42 in #263
• Fix: Added missing downcaseTokens function to policytree.py by @Xinzhang-Chen in #320
• Fix Lagrange Coefficient Key Mismatch in CPabe_BSW07.decrypt by @Komorebi-Z in #323
• Fix Issue #326: Adapt to PyLongObject changes in Python 3.12+ by @Komorebi-Z in #328
• Fixes Pairingmodule: Improve PyLongObject handling, optimize, and address Windows/MinGW issues by @Komorebi-Z in #329
• Improve PR #314 and fix escaped character issues by @BatchClayderman in #331
• docs: Modernize documentation for v0.60 release by @jakinyele in #333
• release: Upgrade to PBC 1.0.0 and bump version to 0.60 by @jakinyele in #334
• Charm-Crypto v0.60 Release by @jakinyele in #335

New Contributors

• @cygnusv made their first contribution in #98
• @lferr made their first contribution in #101
• @leafac made their first contribution in #130
• @ElectroSuccess made their first contribution in #141
• @sagrawal87 made their first contribution in #151
• @jthure made their first contribution in #178
• @lovesh made their first contribution in #180
• @timothymctim made their first contribution in #198
• @davidstritzl made their first contribution in #199
• @doughgle made their first contribution in #202
• @LaRiffle made their first contribution in #218
• @lenerd made their first contribution in #226
• @fwdekker made their first contribution in #237
• @raghavkaul made their first contribution in #252
• @friedrichsenm made their first contribution in #262
• @lrusso96 made their first contribution in #265
• @dubek made their first contribution in #271
• @ChopperCP made their first contribution in #269
• @ajisaisena made their first contribution in #280
• @ahmedmbakr made their first contribution in #291
• @jianda1013 made their first contribution in #290
• @terry-fee made their first contribution in #300
• @EliusSolis made their first contribution in #310
• @BatchClayderman made their first contribution in https://github.com/JHUISI/charm/p...

v0.43 beta release

• simplified benchmarking interface -- breaks compatibility and see docs
• added new schemes (external contributions from Nikos Fotiou, Fan Zhang, Hoeteck Wee)
• added pre-computation for group exponentiation in pairing-based modules -- see docs
• fixed several memory leaks and segmentation faults
• switched from SHA1 to SHA2 for hashing operations
• improved serialization -- now using JSON instead of Pickle (security vulnerability)
• significant improvements to all base modules -- several fixes to integer & ecmodule funcs
• more robust Android build for Charm
• significant fixes to 2.7 version of Charm