securesystemslib
Securesystemslib is a cryptography interface for signing and verifying digital signatures. It is developed for the TUF and in-toto projects: the key and signature containers are compatible with metadata formats from those projects.
Under the hood, Securesystemslib can use various digital signing systems (e.g. cryptography, PIV hardware keys and multiple cloud-based key management systems).
Installation
The default installation supports pure-Python ed25519 signature
verification only. To enable other schemes and
signature creation, securesystemslib can be installed with extras. See
pyproject.toml for available optional dependencies.
# Install with ed25519, RSA, ECDSA, ML-DSA sign and verify support
pip install securesystemslib[crypto]
# ...or with HSM (e.g. Yubikey) support
pip install securesystemslib[hsm]
Usage
python-securesystemslib.readthedocs.io
Contact
- Questions and discussions:
#securesystemslib-pythonon CNCF Slack - Security issues: see Security policy
- Other issues and requests: Open a new issue
Contribute
See Instructions for contributors.
Legacy key migration
Use
migrate_keys
script to convert key pairs generated with legacy keys or interface modules
to a consistent standard format, which is compatible with
CryptoSigner. The script requires
securesystemslib~=0.31.0.
3 maintainers
Metadata
3 maintainers
Release files for securesystemslib 1.6.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| securesystemslib-1.6.0.tar.gz | 950.9 kB | With provenance | Details for securesystemslib-1.6.0.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| securesystemslib-1.6.0-py3-none-any.whl | Python 3 | none | any | Details for securesystemslib-1.6.0-py3-none-any.whl |
Total release size: 1.8 MB
Release files / securesystemslib-1.6.0.tar.gz
| Download URL | securesystemslib-1.6.0.tar.gz |
|---|---|
| Size | 950.9 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
b16e07c32bb41174c2ee2fb18f478ebe0d52e0e7c1fb085ce89c990452a35977
|
|
BLAKE2b-256 checksum How to use checksums |
6cb768ce74b4c3ab753c2de907d035a4102b4510729393184af3c7bdfee04d18
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 20, 2026.
Transparency logRelease files / securesystemslib-1.6.0-py3-none-any.whl
| Download URL | securesystemslib-1.6.0-py3-none-any.whl |
|---|---|
| Size | 874.8 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
1c1aa00f058f4851f038d409c8ca4a727db854a91f07ec3a0fa047bb93e43e0e
|
|
BLAKE2b-256 checksum How to use checksums |
501e56bf4531475c32a8503c040ab7f05c34430a0c6b5744bf6c373246dd3c97
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 20, 2026.
Transparency logSecurity for securesystemslib 1.6.0
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
Full provenance
All 2 files in this release have been uploaded with provenance metadata.
Attestation for securesystemslib-1.6.0.tar.gz
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 20, 2026.
Transparency logA note on package security
PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.
To learn more about protecting yourself from malicious actors, visit our package security documentation.
