dilithium-py

library1.4.0pypypiunverified

A pure python implementation of the ML-DSA (FIPS 204) post-quantum digital signature scheme (formerly known as Dilithium). Version 1.4.0 supports multiple security levels (ML-DSA-44, ML-DSA-65, ML-DSA-87) and is actively maintained. Release cadence is irregular, with updates driven by standardization changes.

security

pip install dilithium-py

github ↗homepage ↗

INSTALL

IMPORT

SIG · DILITHIUM-PY

dilithium-py

securitypythonv1.4.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

ML_DSA_44

✓ from dilithium_py import ML_DSA_44

✗ from dilithium import ML_DSA_44

Minimal example: key generation, signing, and verification using ML-DSA-65.

from dilithium import ML_DSA_65 # Key generation sk, pk = ML_DSA_65.keygen() # Signing msg = b"Hello, post-quantum world!" sig = ML_DSA_65.sign(sk, msg) # Verification try: ML_DSA_65.verify(pk, msg, sig) print("Valid signature") except Exception as e: print(f"Invalid signature: {e}")

Debug

Known issues

breakingOld class names (Dilithium2, Dilithium3, Dilithium5) removed in v1.0.0.

fix

Replace with ML_DSA_44, ML_DSA_65, ML_DSA_87 respectively.

affects: >=1.0.0

gotchaML-DSA is a stateful signature scheme. The sign function may modify internal state; do not reuse signer objects unless designed.

fix

Use keygen() to create fresh signing context for each signature if determinism is required.

affects: all

gotchaPublic key and signature sizes are larger than classical schemes (e.g., ML-DSA-65 pk ~1.3KB, sig ~2.4KB).

fix

Plan storage and transmission accordingly.

affects: all

gotchaThe library is pure Python. Performance may be insufficient for high-throughput production use.

fix

Consider optimized C libraries (e.g., liboqs) for performance-critical deployments.

affects: all

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Version history

1.4.0latest on PyPI · released Dec 17, 2025

Audit

Dependencies

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Agent activity

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Resources

githubhttps://github.com/GiacomoPope/dilithium-py ↗

homepagehttps://github.com/GiacomoPope/dilithium-py ↗