ocspbuilder
Creates and signs online certificate status protocol (OCSP) requests and responses for X.509 certificates
Decision gist · record as of 2026-08-14
Yes, if you need to work with OCSP protocol messages in a Python PKI system. The library has low install friction, permissive licensing, and no known vulnerabilities. The gap between the latest release (2016) and current maintenance activity warrants checking whether the library's maturity or stability meets your project's expectations, but active repository status suggests it is maintained.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires asn1crypto and oscrypto; oscrypto may require system cryptographic libraries depending on platform.
- Low install friction with only two runtime dependencies (asn1crypto and oscrypto).
- Repository is active with recent commits, though the latest release was in 2016; maintenance status is marked active.
License · maintenance · safety
MIT (permissive) — MIT license is permissive, allowing commercial and private use with minimal restrictions—suitable for most projects.
last release 2016-07-29 (3668 days) · last repo commit 2026-07-18 · 34 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 1,870,326 downloads/mo, #3,473 on PyPI
Alternatives
Verify before relying
pip install ocspbuilder
from ocspbuilder import OCSPResponseBuilder
from asn1crypto import x509
# Build and sign an OCSP response
response_builder = OCSPResponseBuilder()
# (configure with certificate, issuer, and signing key)- Current real-world adoption and whether 2016 latest release reflects active maintenance or stable maturity.
- Whether oscrypto's platform-specific crypto dependencies introduce practical friction on all target systems.
What it is and what it does
ocspbuilder is a Python library for constructing and signing OCSP (Online Certificate Status Protocol) requests and responses used in X.509 certificate validation workflows. It is part of the modularcrypto family of cryptographic packages and sits alongside asn1crypto for ASN.1 handling and oscrypto for cryptographic operations.
The library handles the low-level construction of OCSP protocol messages, allowing developers to build certificate status responses that can be served to clients validating certificate chains. It abstracts the ASN.1 encoding and signing logic required by the OCSP standard, making it practical to implement OCSP responder functionality or generate OCSP requests for certificate validation in custom PKI systems.
Use it for
- Build OCSP responses in a custom certificate authority or OCSP responder service.
- Generate OCSP requests to validate certificate status in client applications.
- Integrate certificate revocation checking into PKI infrastructure without external dependencies.
- Test OCSP protocol handling in certificate validation libraries or security tools.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need to work with OCSP protocol messages in a Python PKI system.
The library has low install friction, permissive licensing, and no known vulnerabilities. The gap between the latest release (2016) and current maintenance activity warrants checking whether the library's maturity or stability meets your project's expectations, but active repository status suggests it is maintained.
Install
ocspbuilder on PyPI
Before you install
Low install friction with only two runtime dependencies (asn1crypto and oscrypto). Repository is active with recent commits, though the latest release was in 2016; maintenance status is marked active.
Requires asn1crypto and oscrypto; oscrypto may require system cryptographic libraries depending on platform.
License in practice
MIT license is permissive, allowing commercial and private use with minimal restrictions—suitable for most projects.
Quickstart
pip install ocspbuilder
from ocspbuilder import OCSPResponseBuilder
from asn1crypto import x509
# Build and sign an OCSP response
response_builder = OCSPResponseBuilder()
# (configure with certificate, issuer, and signing key)Verify before relying
- Current real-world adoption and whether 2016 latest release reflects active maintenance or stable maturity.
- Whether oscrypto's platform-specific crypto dependencies introduce practical friction on all target systems.
Package facts
| License | MIT permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesasn1cryptooscrypto |
| Maintenance | Actively maintained 3,668 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 1,870,326 / month, #3,473 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 :: OSI Approved :: MIT LicenseProgramming Language :: Python :: 2.6Programming Language :: Python :: 2.7Programming Language :: Python :: 3.2Programming Language :: Python :: 3.3Programming Language :: Python :: 3.4Programming Language :: Python :: 3.5Programming Language :: Python :: Implementation :: PyPyTopic :: Security :: Cryptography |
Evidence: ocspbuilder-0.10.2-py2.py3-none-any.whl
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See also certvalidator · pyhanko-certvalidator · ocspresponder · openssl-ocsp-responder · asn1crypto · certipy · oscrypto · endesive · signxml · aws-cdk.aws-certificatemanager