ocspresponder
RFC 6960 compliant OCSP Responder framework written in Python 3.5+.
Decision gist · record as of 2026-08-14
No. The package is abandoned (no releases since 2016, marked as Alpha status) and explicitly states 'Don't use for production yet.' While install friction is low and the license is permissive, the lack of maintenance, undeclared dependencies, and unresolved production-readiness issues make it unsuitable for any deployment. Use only for learning or historical reference.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.5+ and depends on ocspbuilder, asn1crypto, and Bottle libraries (not listed as explicit runtime deps in this package).
- Low install friction with no runtime dependencies.
- However, the package is marked as abandoned with no releases since 2016 and no recent maintenance activity, making it unsuitable for production use.
License · maintenance · safety
Apache Software License (permissive) — Licensed under Apache License 2.0 (permissive), allowing commercial and private use with minimal restrictions, though the abandoned status raises questions about long-term support.
last release 2016-05-02 (3756 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 1,869,351 downloads/mo, #3,475 on PyPI
Alternatives
Verify before relying
from ocspresponder import OCSPResponder, CertificateStatus
app = OCSPResponder(
issuer_cert_path,
ocsp_cert_path,
ocsp_key_path,
validate_func=validate,
cert_retrieve_func=get_cert,
)
app.serve(port=8080, debug=True)- Whether ocspbuilder, asn1crypto, and Bottle are correctly declared as runtime dependencies in the package metadata.
- Current compatibility with modern Python versions beyond 3.5.
- Whether the Nonce extension implementation (RFC 6960 Section 4.4.1) is complete and correct.
- Security implications of using an unmaintained OCSP responder in production environments.
What it is and what it does
ocspresponder is a framework for building RFC 6960 compliant OCSP (Online Certificate Status Protocol) responders in Python. It provides a simple HTTP server that answers certificate status queries, allowing clients to check whether SSL/TLS certificates are valid, revoked, or unknown without downloading full certificate revocation lists.
The framework requires you to implement two custom functions: one that determines a certificate's status (good, revoked, or unknown) given its serial number, and another that retrieves the certificate itself. You supply the issuer's certificate and a dedicated OCSP responder keypair, then instantiate the OCSPResponder and call serve() to launch an HTTP server. The package currently supports the Nonce extension but does not yet handle multiple certificates per request.
Use it for
- Building a certificate status service for a private PKI or internal CA infrastructure.
- Implementing OCSP responder functionality for testing SSL/TLS certificate validation workflows.
- Serving certificate revocation status to clients that require real-time validation instead of CRL downloads.
- Integrating certificate status checking into a custom certificate management system.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No.
The package is abandoned (no releases since 2016, marked as Alpha status) and explicitly states 'Don't use for production yet.' While install friction is low and the license is permissive, the lack of maintenance, undeclared dependencies, and unresolved production-readiness issues make it unsuitable for any deployment. Use only for learning or historical reference.
Install
ocspresponder on PyPI
Before you install
Low install friction with no runtime dependencies. However, the package is marked as abandoned with no releases since 2016 and no recent maintenance activity, making it unsuitable for production use.
Requires Python 3.5+ and depends on ocspbuilder, asn1crypto, and Bottle libraries (not listed as explicit runtime deps in this package).
License in practice
Licensed under Apache License 2.0 (permissive), allowing commercial and private use with minimal restrictions, though the abandoned status raises questions about long-term support.
Quickstart
from ocspresponder import OCSPResponder, CertificateStatus
app = OCSPResponder(
issuer_cert_path,
ocsp_cert_path,
ocsp_key_path,
validate_func=validate,
cert_retrieve_func=get_cert,
)
app.serve(port=8080, debug=True)Verify before relying
- Whether ocspbuilder, asn1crypto, and Bottle are correctly declared as runtime dependencies in the package metadata.
- Current compatibility with modern Python versions beyond 3.5.
- Whether the Nonce extension implementation (RFC 6960 Section 4.4.1) is complete and correct.
- Security implications of using an unmaintained OCSP responder in production environments.
Package facts
| License | Apache Software License permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Abandoned 3,756 days since the last release |
| First released | |
| Downloads | 1,869,351 / month, #3,475 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 3 - AlphaFramework :: BottleIntended Audience :: DevelopersIntended Audience :: Information TechnologyIntended Audience :: System AdministratorsLicense :: OSI Approved :: Apache Software LicenseOperating System :: POSIXProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.5Topic :: SecurityTopic :: Software Development :: Libraries :: Python Modules |
Evidence: ocspresponder-0.5.0-py3-none-any.whl
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See also openssl-ocsp-responder · certvalidator · ocspbuilder · pyhanko-certvalidator · asn1crypto · service-identity · secure-smtplib · certifi · oscrypto · requests-pkcs12