py_arkworks_bls12381
Python bindings for BLS12-381 curve operations using arkworks
Decision gist · record as of 2026-08-14
Yes, if you need BLS12-381 operations in Python and are targeting Python 3.11+. The package is actively maintained, has no known vulnerabilities, and offers comprehensive curve operations with good platform coverage via prebuilt wheels. Install friction is moderate but manageable; the dual MIT/Apache-2.0 license is permissive. Verify suitability for your specific cryptographic use case beyond EIP4844 test generation.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python >= 3.11; compiled wheels available for common platforms but may require a Rust toolchain if building from source.
- Medium install friction due to compiled Rust bindings; prebuilt wheels cover Python 3.11–3.14 across Linux, macOS, and Windows architectures.
- Repository is active with recent commits and no known vulnerabilities.
License · maintenance · safety
MIT OR Apache-2.0 (permissive) — Dual-licensed under MIT OR Apache-2.0, both permissive; you may choose either license when using or distributing this package.
last release 2026-06-23 (52 days) · last repo commit 2026-06-23 · 10 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 85,839 downloads/mo, #13,896 on PyPI
Alternatives
Verify before relying
pip install py_arkworks_bls12381
from py_arkworks_bls12381 import G1Point, G2Point, Scalar
gen = G1Point()
scalar = Scalar(4)
result = gen * scalar- Performance characteristics and benchmarks for pairing and multi-scalar multiplication operations.
- Stability guarantees and API compatibility policy across minor versions.
- Whether the library is suitable for production cryptographic use beyond EIP4844 test vectors.
What it is and what it does
py_arkworks_bls12381 wraps the Rust arkworks algebra library to provide Python access to BLS12-381 elliptic curve operations. It exposes G1 and G2 point types with arithmetic (addition, subtraction, scalar multiplication), identity and generator elements, subgroup checks, and multi-scalar multiplication. The library also supports point serialization in compressed and uncompressed formats with both big-endian and little-endian byte order variants, plus unchecked variants that skip subgroup validation for trusted inputs.
The package includes pairing operations—both single and multi-pairing with optimized final exponentiation—and pairing checks for cryptographic proofs. It provides map-to-curve functions for hashing to G1 and G2 using SWU mapping with cofactor clearing. Scalar types support arithmetic, division, exponentiation, and inversion. The primary use case is generating test vectors for EIP4844 in Ethereum consensus-specs, though the generic design supports other BLS12-381 applications.
Use it for
- Generate EIP4844 test vectors for Ethereum consensus layer specifications.
- Implement BLS signature schemes or threshold cryptography in Python applications.
- Perform elliptic curve pairing checks and bilinear map operations for zero-knowledge proofs.
- Serialize and deserialize BLS12-381 curve points in cryptographic protocols.
- Hash arbitrary data to elliptic curve points using map-to-curve functions.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need BLS12-381 operations in Python and are targeting Python 3.11+.
The package is actively maintained, has no known vulnerabilities, and offers comprehensive curve operations with good platform coverage via prebuilt wheels. Install friction is moderate but manageable; the dual MIT/Apache-2.0 license is permissive. Verify suitability for your specific cryptographic use case beyond EIP4844 test generation.
Install
py-arkworks-bls12381 on PyPI
Before you install
Medium install friction due to compiled Rust bindings; prebuilt wheels cover Python 3.11–3.14 across Linux, macOS, and Windows architectures. Repository is active with recent commits and no known vulnerabilities.
Requires Python >= 3.11; compiled wheels available for common platforms but may require a Rust toolchain if building from source.
License in practice
Dual-licensed under MIT OR Apache-2.0, both permissive; you may choose either license when using or distributing this package.
Quickstart
pip install py_arkworks_bls12381
from py_arkworks_bls12381 import G1Point, G2Point, Scalar
gen = G1Point()
scalar = Scalar(4)
result = gen * scalarVerify before relying
- Performance characteristics and benchmarks for pairing and multi-scalar multiplication operations.
- Stability guarantees and API compatibility policy across minor versions.
- Whether the library is suitable for production cryptographic use beyond EIP4844 test vectors.
Package facts
| License | MIT OR Apache-2.0 permissive |
| Python support | Supports the current Python release >=3.11 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 52 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 85,839 / month, #13,896 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Rust |
Evidence: py_arkworks_bls12381-0.5.0-cp311-cp311-macosx_10_12_x86_64.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-macosx_11_0_arm64.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-manylinux_2_17_armv7l.manylinux2014_armv7l.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-manylinux_2_17_s390x.manylinux2014_s390x.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-manylinux_2_5_i686.manylinux1_i686.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-musllinux_1_2_aarch64.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-musllinux_1_2_armv7l.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-musllinux_1_2_i686.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-musllinux_1_2_x86_64.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-win32.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-win_amd64.whl; py_arkworks_bls12381-0.5.0-cp311-cp311-win_arm64.whl; py_arkworks_bls12381-0.5.0-cp312-cp312-macosx_10_12_x86_64.whl; py_arkworks_bls12381-0.5.0-cp312-cp312-macosx_11_0_arm64.whl; py_arkworks_bls12381-0.5.0-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl; py_arkworks_bls12381-0.5.0-cp312-cp312-manylinux_2_17_armv7l.manylinux2014_armv7l.whl; py_arkworks_bls12381-0.5.0-cp312-cp312-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl
Tags
Let your AI agent find packages like this
Example. Real query, live index.
You found this page by searching. An agent finds it by wishing: SkillFed indexes 14,416 PyPI packages by what they can do, searchable in plain language.
wish › “bls12-381 python bindings”
- py_arkworks_bls12381Python bindings for BLS12-381 elliptic curve cryptography operations,…
- hsmsProvides command-line tools to simulate a hardware security module…
- py-eccImplements elliptic curve cryptography operations for secp256k1,…
Give your agent the search over MCP, or paste the wish link into any chat.
More Cryptography packages
Certifi provides Mozilla's curated collection of root SSL certificates for Python applications to validate TLS hosts and verify certificate trustworthiness.
cryptography provides cryptographic recipes and low-level primitives for symmetric encryption, message digests, key derivation, and other common cryptographic algorithms in Python.
Pure-Python RSA encryption, decryption, signing, and key generation following PKCS#1 v1.5, with command-line and library interfaces.
pyOpenSSL wraps OpenSSL's SSL/TLS functionality for Python, providing high-level connection objects and certificate handling through a Python-friendly interface around OpenSSL's cryptographic operations.
Provides Microsoft Entra ID token-based authentication for Azure SDK clients through a set of TokenCredential implementations that handle OAuth flows and managed identity support.
PyNaCl provides Python bindings to libsodium for digital signatures, secret-key and public-key encryption, hashing, message authentication, and password-based key derivation.
See also py-ecc · x25519 · lightecc · coincurve · diffiehellmanlib · eciespy · lightphe · ECPy · delta-kernel-rust-sharing-wrapper · chia-rs