safe-pysha3
SHA-3 (Keccak) for Python 3.9 - 3.13
Decision gist · record as of 2026-08-14
Yes, if you need SHA-3 or SHAKE on Python 3.9–3.13 and require legacy Keccak hashes or pre-NIST compatibility. The package is stable and dependency-free, but install friction is medium due to C compilation. The 421-day release gap suggests maintenance is minimal; verify active support for your use case before adopting.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires C compiler and development headers at install time due to C extension; Python 3.9 or later.
- Medium install friction due to C extension compilation; prebuilt wheels available for Python 3.9–3.13 on Linux and musl platforms.
- Package is aging (last release 421 days ago) but repository remains active with no archived status.
License · maintenance · safety
PSFL (Keccak: CC0 1.0 Universal) (permissive) — Dual-licensed under PSFL and CC0 1.0 Universal (Keccak component); permissive treatment allows use in most contexts without restriction.
last release 2025-06-19 (421 days) · last repo commit 2025-06-19 · 7 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 362,777 downloads/mo, #7,230 on PyPI
Alternatives
Verify before relying
import hashlib
s = hashlib.sha3_512()
s.update(b"data")
print(s.hexdigest())- Whether the package is actively maintained or in maintenance-only mode given the 421-day gap since last release.
- Performance characteristics compared to Python 3.6+ built-in hashlib SHA-3 support on modern Python versions.
- Whether monkey-patching of hashlib occurs automatically on import and what side effects this may have.
What it is and what it does
safe-pysha3 is a wrapper around the optimized Keccak Code Package that exposes SHA-3, SHAKE, and legacy Keccak hash functions to Python. It implements the official NIST standard (with delimiter suffix 0x06) and also provides the pre-finalization Keccak hashes for backward compatibility. The module provides constructors for hash objects with a PEP 247 compatible interface including sha3_224(), sha3_256(), sha3_384(), sha3_512(), shake_128(), shake_256(), and keccak variants.
The package is a C extension compiled from optimized Keccak sources and is available as prebuilt wheels for Python 3.9–3.13 on Linux and musl platforms. It has no runtime dependencies and exposes methods like update(), digest(), and hexdigest(). The package is permissively licensed under PSFL and CC0 1.0 Universal, and has seen no reported security vulnerabilities.
Use it for
- Computing SHA-3 hashes for cryptographic operations when legacy Keccak compatibility is needed.
- Generating SHAKE variable-length digests for applications requiring flexible hash output sizes.
- Accessing pre-finalization Keccak hashes for systems that depend on the old Keccak implementation prior to NIST standardization.
- Integrating SHA-3 hashing into Python 3.9–3.13 codebases via the standard hashlib interface.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need SHA-3 or SHAKE on Python 3.9–3.13 and require legacy Keccak hashes or pre-NIST compatibility.
The package is stable and dependency-free, but install friction is medium due to C compilation. The 421-day release gap suggests maintenance is minimal; verify active support for your use case before adopting.
Install
safe-pysha3 on PyPI
Before you install
Medium install friction due to C extension compilation; prebuilt wheels available for Python 3.9–3.13 on Linux and musl platforms. Package is aging (last release 421 days ago) but repository remains active with no archived status.
Requires C compiler and development headers at install time due to C extension; Python 3.9 or later.
License in practice
Dual-licensed under PSFL and CC0 1.0 Universal (Keccak component); permissive treatment allows use in most contexts without restriction.
Quickstart
import hashlib
s = hashlib.sha3_512()
s.update(b"data")
print(s.hexdigest())Verify before relying
- Whether the package is actively maintained or in maintenance-only mode given the 421-day gap since last release.
- Performance characteristics compared to Python 3.6+ built-in hashlib SHA-3 support on modern Python versions.
- Whether monkey-patching of hashlib occurs automatically on import and what side effects this may have.
Package facts
| License | PSFL (Keccak: CC0 1.0 Universal) permissive |
| Python support | Not specified |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | None |
| Maintenance | Aging 421 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 362,777 / month, #7,230 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersLicense :: CC0 1.0 Universal (CC0 1.0) Public Domain DedicationLicense :: OSI Approved :: Python Software Foundation LicenseNatural Language :: EnglishOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: WindowsOperating System :: POSIXOperating System :: POSIX :: BSDOperating System :: POSIX :: LinuxProgramming Language :: CProgramming Language :: PythonProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.9Topic :: Security :: Cryptography |
Evidence: safe_pysha3-1.0.5-cp310-cp310-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; safe_pysha3-1.0.5-cp310-cp310-musllinux_1_2_x86_64.whl; safe_pysha3-1.0.5-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; safe_pysha3-1.0.5-cp311-cp311-musllinux_1_2_x86_64.whl; safe_pysha3-1.0.5-cp312-cp312-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; safe_pysha3-1.0.5-cp312-cp312-musllinux_1_2_x86_64.whl; safe_pysha3-1.0.5-cp313-cp313-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; safe_pysha3-1.0.5-cp313-cp313-musllinux_1_2_x86_64.whl; safe_pysha3-1.0.5-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; safe_pysha3-1.0.5-cp39-cp39-musllinux_1_2_x86_64.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 › “sha3 hash python”
- safe-pysha3Provides SHA-3, SHAKE, and Keccak hash functions for Python 3.9–3.13…
- pysha3Provides SHA-3, SHAKE, and Keccak hash functions for Python 2.7…
- eth-hashProvides the keccak256 hashing function used by Ethereum through a…
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 pysha3 · eth-hash · py-multihash · siphash · dict-hash · siphash24 · mmh3 · dirhash · uhashring · filehash