A library to convert between Sigstore Bundles and PEP-740 Attestation objects
Project description
PyPI Attestation Models
A library to convert between Sigstore Bundles and PEP-740 Attestation objects
Installation
python -m pip install pypi-attestation-models
Usage
See the full API documentation here.
Signing and verification
Use these APIs to create a PEP 740-compliant Attestation
object by signing a Python artifact
(i.e: sdist or wheel files), and to verify an Attestation
object against a Python artifact.
from pathlib import Path
from pypi_attestation_models import Attestation, AttestationPayload
from sigstore.oidc import Issuer
from sigstore.sign import SigningContext
from sigstore.verify import Verifier, policy
artifact_path = Path("test_package-0.0.1-py3-none-any.whl")
# Sign a Python artifact
issuer = Issuer.production()
identity_token = issuer.identity_token()
signing_ctx = SigningContext.production()
with signing_ctx.signer(identity_token, cache=True) as signer:
attestation = AttestationPayload.from_dist(artifact_path).sign(signer)
print(attestation.model_dump_json())
# Verify an attestation against a Python artifact
attestation_path = Path("test_package-0.0.1-py3-none-any.whl.attestation")
attestation = Attestation.model_validate_json(attestation_path.read_bytes())
verifier = Verifier.production()
policy = policy.Identity(identity="example@gmail.com", issuer="https://accounts.google.com")
attestation.verify(verifier, policy, attestation_path)
Low-level model conversions
These conversions assume that any Sigstore Bundle used as an input was created
by signing an AttestationPayload
object.
from pathlib import Path
from pypi_attestation_models import pypi_to_sigstore, sigstore_to_pypi, Attestation
from sigstore.models import Bundle
# Sigstore Bundle -> PEP 740 Attestation object
bundle_path = Path("test_package-0.0.1-py3-none-any.whl.sigstore")
with bundle_path.open("rb") as f:
sigstore_bundle = Bundle.from_json(f.read())
attestation_object = sigstore_to_pypi(sigstore_bundle)
print(attestation_object.model_dump_json())
# PEP 740 Attestation object -> Sigstore Bundle
attestation_path = Path("attestation.json")
with attestation_path.open("rb") as f:
attestation = Attestation.model_validate_json(f.read())
bundle = pypi_to_sigstore(attestation)
print(bundle.to_json())
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
Built Distribution
Close
Hashes for pypi_attestation_models-0.0.1rc2.tar.gz
Algorithm | Hash digest | |
---|---|---|
SHA256 | 25277c4a7dcca68ace17bbf6559e3b39f338363ed571cf1f26b2643a7fd248bc |
|
MD5 | e0798bfaa883e8467a3cc8e899bcda82 |
|
BLAKE2b-256 | a386dcf545ca3addf8940f127be2c36df48851befda59f0b7e55791617ae5e31 |
Close
Hashes for pypi_attestation_models-0.0.1rc2-py3-none-any.whl
Algorithm | Hash digest | |
---|---|---|
SHA256 | 01670cd63c93943bfe8eb161fc6dcad4c52c4830dce5e583057a2db0813e73a8 |
|
MD5 | 8bd0886982f3174d86211258bf70eec3 |
|
BLAKE2b-256 | efb83eb935dfd4449db44e832ff0273b37c2eb32934a714ca1814f5883ccb57a |