OCSP Server Test Suite

A comprehensive testing application for OCSP (Online Certificate Status Protocol) servers with both GUI and monitoring capabilities. This tool runs structured tests against OCSP servers and provides detailed reporting with exportable results (JSON/CSV).

Screenshots

Features

Comprehensive OCSP Testing: Protocol compliance, security, performance, and status validation
CRL Monitoring: Certificate Revocation List checking and validation
GUI Interface: User-friendly Windows application with real-time monitoring
Export Capabilities: Results exportable in JSON and CSV formats
Certificate Validation: Supports PEM/DER certificate formats
Advanced Testing: IKEv2 in-band OCSP, signed client requests, and more
Trust Chain Building: Automatic OCSP signature verification with trust chain construction
DHS CA4 Support: Enhanced handling of DHS CA4 OCSP signature verification issues
Multi-Step OCSP Signer Validation: Comprehensive 3-step validation process for OCSP signatures
Federal PKI Detection: Automatic detection and handling of federal PKI environments
Batch Response Support: Handles federal PKI batch OCSP responses (DHS CA4, DoD, etc.)

System Requirements

External Software Dependencies

1. Git (optional)

Required Version: Git 2.0+ Purpose: Cloning the repository. Optional — you can instead download the project as a ZIP from GitHub (Code → Download ZIP). Only needed if you prefer to git clone or plan to contribute.

Installation Instructions:

Windows:

Git is not available on the Microsoft Store. The easiest way to install it on Windows is with Scoop.

# 1. Install Scoop (run once, in a normal PowerShell window)
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
Invoke-RestMethod -Uri https://get.scoop.sh | Invoke-Expression

# 2. Install Git
scoop install git

# Alternative: download the official installer from
# https://git-scm.com/download/win and run the setup wizard.

Linux (Ubuntu/Debian):

sudo apt update
sudo apt install git

Linux (CentOS/RHEL/Fedora):

# CentOS/RHEL
sudo yum install git

# Fedora
sudo dnf install git

macOS:

# Using Homebrew
brew install git

# Or download from: https://git-scm.com/download/mac

Verification:

git --version
# Should show Git 2.0.0 or higher

2. Python and pip

Required Version: Python 3.10+ (tested with Python 3.13) Purpose: Runtime environment and package management

Installation Instructions:

Windows:

# Option 1: Microsoft Store (recommended - easiest)
# Search for "Python 3.10" or "Python 3.11" in Microsoft Store and install
# pip comes included with Python installation

# Option 2: Download from python.org
# Download from: https://www.python.org/downloads/
# Ensure "Add Python to PATH" is checked during installation
# pip comes included with Python installation

# Verify pip installation
python -m pip --version

Linux (Ubuntu/Debian):

sudo apt update
sudo apt install python3.10 python3.10-pip python3.10-venv

# Alternative: Install latest Python
sudo apt install python3 python3-pip python3-venv

Linux (CentOS/RHEL/Fedora):

# CentOS/RHEL
sudo yum install python3.10 python3.10-pip

# Fedora
sudo dnf install python3 python3-pip

# If pip is not available, install it manually
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python3 get-pip.py

macOS:

# Using Homebrew
brew install python@3.10
# pip comes included with Python

# Or download from: https://www.python.org/downloads/

Verification:

python --version
# Should show Python 3.10.0 or higher

pip --version
# Should show pip version information

3. OpenSSL

Required Version: OpenSSL 1.1.1+ or OpenSSL 3.0+ Purpose: Used extensively for certificate operations, OCSP requests, and CRL processing

Installation Instructions:

Windows:

OpenSSL is not published on the Microsoft Store. Install it with Scoop (recommended) or the manual installer below.

# Recommended: using Scoop (see the Git section above to install Scoop first)
scoop install openssl

# Alternative: manual installer
# Download from: https://slproweb.com/products/Win32OpenSSL.html
# Add its bin directory to PATH (e.g., C:\OpenSSL-Win64\bin).
# Note: the slproweb builds require the Microsoft Visual C++ Redistributable
# (https://aka.ms/vs/17/release/vc_redist.x64.exe). The "Light" builds do not
# bundle it, so install it if you see a "VCRUNTIME140.dll is missing" error.

Linux (Ubuntu/Debian):

sudo apt update
sudo apt install openssl

Linux (CentOS/RHEL/Fedora):

# CentOS/RHEL
sudo yum install openssl

# Fedora
sudo dnf install openssl

macOS:

# Using Homebrew
brew install openssl

# Using MacPorts
sudo port install openssl

Verification:

openssl version
# Should show OpenSSL 1.1.1+ or 3.0+

GUI Requirements

Windows

tkinter: Included with Python standard library
No additional setup required
Optional: Windows Terminal (Microsoft Store) for enhanced command-line experience

Linux

tkinter: May need separate installation

# Ubuntu/Debian
sudo apt install python3-tk

# CentOS/RHEL/Fedora
sudo yum install tkinter

macOS

tkinter: Included with Python standard library
No additional setup required

Installation

Quick Setup Guide (Windows)

1. Install Scoop, Git, and OpenSSL. Open a normal (non-Administrator) PowerShell window and run:

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
Invoke-RestMethod -Uri https://get.scoop.sh | Invoke-Expression
scoop install git openssl

2. Install Python from the Microsoft Store (search for "Python 3.10" or newer — pip and tkinter are included).

3. Download the project. On the repository page, click Code → Download ZIP, then extract the ZIP file.

4. Open the folder in a terminal. Open the extracted OCSPTesting folder, right-click an empty space inside it, and choose Open in Terminal.

5. Create the virtual environment, install dependencies, and run:

python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python app.py

Tip: Open a fresh terminal after installing Scoop/Git/OpenSSL/Python so the new tools are on your PATH. Using PowerShell instead of Command Prompt for step 5? Activate the virtual environment with venv\Scripts\Activate.ps1.

Prerequisites

Before installing the OCSP Testing Tool, ensure you have installed:

Python 3.10+ with pip (required — for running the application)
OpenSSL (required — for certificate operations)
Git (optional — only if you'd rather git clone than download the ZIP)

💡 Windows Users: OpenSSL is not on the Microsoft Store — install it with Scoop: scoop install openssl (see the Quick Setup Guide below to install Scoop first). Install Python from the Microsoft Store (pip and tkinter are included). Git is optional; if you want it, it's also Scoop-only (not on the Store): scoop install git. For the best command-line experience, also consider installing Windows Terminal from the Microsoft Store.

See the System Requirements section above for detailed installation instructions.

1. Clone or Download

git clone <repository-url>
cd OCSPTesting

2. Create Virtual Environment (Recommended)

# Windows
python -m venv venv
venv\Scripts\activate

# Linux/macOS
python3 -m venv venv
source venv/bin/activate

3. Install Python Dependencies

pip install -r requirements.txt

4. Verify Installation

# Check Git installation
git --version

# Check Python and pip installation
python --version
pip --version

# Check Python dependencies
python -c "import cryptography, requests, asn1crypto; print('All dependencies installed successfully')"

# Check OpenSSL availability
openssl version

Usage

GUI Application

python app.py

Command Line Testing (Future Feature)

# Planned for future releases
python -m ocsp_tester.cli --ocsp-url <URL> --issuer <cert-file>

Input Requirements

Required Inputs

OCSP URL: The endpoint to test (e.g., http://host/ocsp)
Issuer CA Certificate: PEM or DER format certificate file

Optional Inputs

Known Good Certificate: For positive test cases
Known Revoked Certificate: For negative test cases
Unknown CA Certificate: For cross-CA testing
Client Signing Certificate/Key: For signed request tests

Test Categories

Protocol Tests

Basic OCSP request/response validation
Certificate ID matching
Response format compliance

Security Tests

Signature verification
Nonce handling
Request signing validation

Performance Tests

Latency measurement
Load testing capabilities
Concurrent request handling

Status Tests

Good certificate validation
Revoked certificate detection
Unknown certificate handling

CRL Tests

CRL download and parsing
Certificate revocation checking
CRL signature validation

Export Formats

JSON Export

Complete test results with timestamps
Detailed error information
Test configuration details

CSV Export

Tabular format for spreadsheet analysis
Summary statistics
Easy filtering and sorting

Troubleshooting

Common Issues

Permission Denied Errors

# Windows: Run Command Prompt as Administrator
# Right-click Command Prompt → "Run as administrator"

# Or change to a user-writable directory
cd C:\Users\%USERNAME%\Documents
mkdir OCSPTesting
cd OCSPTesting
# Then clone/copy the application files here

# Linux/macOS: Use proper permissions
sudo chown -R $USER:$USER /path/to/OCSPTesting
chmod 755 /path/to/OCSPTesting

Working Directory Issues

# Windows: Avoid running from system directories
# Don't run from C:\WINDOWS\system32
# Instead, use:
cd C:\Users\%USERNAME%\Documents
# or
cd C:\OCSPTesting

# Linux/macOS: Use home directory
cd ~/OCSPTesting
# or
cd /opt/OCSPTesting

Git Not Found

# Windows: Git is NOT on the Microsoft Store.
# Install with Scoop: scoop install git
# Or download the official installer: https://git-scm.com/download/win

# Linux (Ubuntu/Debian): sudo apt install git
# Linux (CentOS/RHEL): sudo yum install git
# macOS: brew install git

Python or pip Not Found

# Windows: Install from Microsoft Store (recommended)
# Search for "Python 3.10" or "Python 3.11" in Microsoft Store
# Or download from: https://www.python.org/downloads/
# Ensure "Add Python to PATH" is checked during installation

# Linux (Ubuntu/Debian): sudo apt install python3 python3-pip
# Linux (CentOS/RHEL): sudo yum install python3 python3-pip
# macOS: brew install python@3.10

# Verify pip installation
python -m pip --version

OpenSSL Not Found

# Windows: OpenSSL is NOT on the Microsoft Store.
# Install with Scoop: scoop install openssl
# Or download the manual installer (requires the Microsoft Visual C++
# Redistributable): https://slproweb.com/products/Win32OpenSSL.html
# Or add an existing OpenSSL to PATH: set PATH=%PATH%;C:\OpenSSL-Win64\bin

# Linux/macOS: Install OpenSSL
sudo apt install openssl  # Ubuntu/Debian
brew install openssl      # macOS

OpenSSL PATH Issues (Windows)

# Check if OpenSSL is installed but not in PATH
where openssl
# If not found, add to PATH:

# Method 1: Add to system PATH permanently
# 1. Open System Properties → Advanced → Environment Variables
# 2. Add C:\OpenSSL-Win64\bin to PATH variable
# 3. Restart Command Prompt

# Method 2: Add to PATH for current session
set PATH=%PATH%;C:\OpenSSL-Win64\bin

# Method 3: Using Scoop (recommended)
scoop install openssl
# This automatically adds OpenSSL to PATH

# Verify OpenSSL installation
openssl version
# Should show OpenSSL 1.1.1+ or 3.0+

Using Windows Environment Variables Dialog

Step-by-step guide to fix PATH and TEMP issues:

Open Environment Variables Dialog:
- Press Win + R, type sysdm.cpl, press Enter
- Click "Advanced" tab → "Environment Variables" button
- Or: Right-click "This PC" → Properties → Advanced system settings → Environment Variables
Add OpenSSL to System PATH:
- In "System variables" section, find "Path" variable
- Click "Edit..." button
- Click "New" button
- Add: C:\OpenSSL-Win64\bin (adjust path if different)
- Click "OK" to save
Verify TEMP Variables (User Variables):
- In "User variables" section, check:
  - TEMP: Should be C:\Users\[YourUsername]\AppData\Local\Temp
  - TMP: Should be C:\Users\[YourUsername]\AppData\Local\Temp
- If missing, click "New..." and add them
Restart Command Prompt:
- Close all Command Prompt/PowerShell windows
- Open new Command Prompt
- Test: openssl version

Visual Guide:

User variables: Shows your personal settings (TEMP, TMP, OneDrive)
System variables: Shows system-wide settings (PATH, ComSpec, OS)
Path variable: Contains directories where Windows looks for executables
TEMP/TMP variables: Tell applications where to create temporary files

Security Test Failures

# Error: [Errno 2] No such file or directory: '/tmp/test_issuer.pem'
# This indicates temporary file creation issues

# Windows: Check TEMP environment variable
echo %TEMP%
# Should show a writable directory like C:\Users\Username\AppData\Local\Temp

# Linux/macOS: Check TMPDIR
echo $TMPDIR
# Should show /tmp or similar

# Fix: Ensure temp directory is writable
# Windows:
mkdir C:\temp
set TEMP=C:\temp
set TMP=C:\temp

# Linux/macOS:
sudo chmod 777 /tmp
# or
export TMPDIR=/home/$USER/tmp
mkdir -p $TMPDIR

tkinter Import Error (Linux)

sudo apt install python3-tk  # Ubuntu/Debian
sudo yum install tkinter     # CentOS/RHEL

Permission Denied (Windows)

Run Command Prompt as Administrator
Ensure OpenSSL is in system PATH

Verification Commands

# Check Git installation
git --version

# Check Python and pip installation
python --version
pip --version

# Check all Python dependencies
python -c "
import sys
print(f'Python: {sys.version}')
try:
    import cryptography
    print(f'cryptography: {cryptography.__version__}')
except ImportError as e:
    print(f'cryptography: {e}')
try:
    import requests
    print(f'requests: {requests.__version__}')
except ImportError as e:
    print(f'requests: {e}')
try:
    import asn1crypto
    print(f'asn1crypto: {asn1crypto.__version__}')
except ImportError as e:
    print(f'asn1crypto: {e}')
"

# Check OpenSSL installation
openssl version

Advanced Configuration

Environment Variables

TEMP: Directory for temporary files (Windows)
TMPDIR: Directory for temporary files (Linux/macOS)

Network Configuration

Ensure firewall allows HTTP/HTTPS connections to OCSP servers
Proxy settings may need to be configured for corporate networks

Common Error Patterns

Pattern 1: Permission Denied + System Directory

Error saving config: [Errno 13] Permission denied: 'ocsp_config.json'
Working directory: C:\WINDOWS\system32

Solution: Run from user directory, not system directory

Pattern 2: OpenSSL Not Found

[WinError 2] The system cannot find the file specified
[CMD] openssl ocsp -issuer...

Solution: Install OpenSSL and add to PATH

Pattern 3: Security Test Failures

[Errno 2] No such file or directory: '/tmp/test_issuer.pem'

Solution: Check TEMP environment variable and permissions

Pattern 4: CRL Tests Skipped

No CRL Distribution Points found in certificate

Solution: This is normal for certificates without CRL URLs

Pattern 5: Environment Variable Issues

[WinError 2] The system cannot find the file specified
Error saving config: [Errno 13] Permission denied

Solution: Use Environment Variables dialog to fix PATH and TEMP settings

Pattern 6: DHS CA4 OCSP Signature Verification Failure

Response Verify Failure
unable to get local issuer certificate

Solution: Enhanced trust chain building automatically handles this issue

DHS CA4 OCSP Enhancement

Overview

The OCSP Testing Tool now includes enhanced support for DHS CA4 OCSP servers that commonly encounter signature verification issues due to incomplete trust chains.

Problem Solved

Error: unable to get local issuer certificate Cause: OCSP responders use separate signing certificates that aren't included in the basic issuer certificate chain Solution: Automatic trust chain building from OCSP response certificates

How It Works

Initial Request: Makes unverified OCSP request to extract certificates
Certificate Extraction: Parses OCSP response to find embedded certificates
Trust Bundle Creation: Combines issuer certificate with OCSP response certificates
Enhanced Verification: Uses complete trust bundle for signature verification
Fallback Handling: Provides detailed logging when verification still fails

Benefits

✅ Automatic Resolution: No manual certificate bundle creation required
✅ Federal PKI Support: Handles DHS CA4, DoD, and other federal PKI environments
✅ Detailed Logging: Clear feedback about trust chain building process
✅ Graceful Degradation: Still provides certificate status even if signature verification fails
✅ Security Awareness: Maintains security warnings when verification fails

Testing

Run the DHS CA4 test script to verify the enhancement:

python test_dhs_ca4_trust_chain.py

Multi-Step OCSP Signer Validation

Overview

The OCSP Testing Tool implements a comprehensive multi-step validation process for OCSP signatures that addresses the specific requirements for validating OCSP signer certificates.

The 3-Step Validation Process

Step 1: Extract OCSP Signer Certificate

Purpose: Extract the certificate used to sign the OCSP response
Process: Parses OCSP response to find embedded certificates
Capability: Handles multiple certificates in response, can target specific serial numbers
Output: PEM-formatted signer certificate

Step 2: Validate Signer Certificate Trust

Purpose: Verify the OCSP signer certificate is trusted by the provided issuer
Validation Methods:
- Direct Issuer: Signer is directly issued by the provided issuer certificate
- Self-Signed: Signer is the same as the issuer certificate (self-signed OCSP)
- OCSP Signing EKU: Signer has Extended Key Usage for OCSP Signing (1.3.6.1.5.5.7.3.9)
Output: Trust validation results with detailed relationship information

Step 3: Validate OCSP Response Signature

Purpose: Verify the OCSP response signature using the extracted signer certificate
Process: Uses OpenSSL to perform cryptographic signature validation
Method: Creates temporary files and uses openssl ocsp -respin -verify_other -noverify
Output: Signature validation results with success/failure status

Benefits

✅ Comprehensive Validation: Complete end-to-end OCSP signature verification
✅ Detailed Logging: Step-by-step progress reporting with [OCSP-SIGNER-VALIDATION] prefix
✅ Error Handling: Graceful failure handling with detailed error messages
✅ Serial Number Targeting: Can extract specific certificates by serial number
✅ Multiple Trust Methods: Supports various OCSP signing scenarios
✅ Security Awareness: Maintains security warnings and compliance issues

Testing

Run the multi-step validation test script:

python test_ocsp_signer_validation.py

Environment Variables Quick Reference

Essential Variables for OCSP Testing Tool:

Variable	Purpose	Expected Value	Location
PATH	Find executables (OpenSSL, Python)	`C:\OpenSSL-Win64\bin;C:\Python310\Scripts;...`	System variables
TEMP	Temporary file location	`C:\Users\[Username]\AppData\Local\Temp`	User variables
TMP	Alternative temp location	`C:\Users\[Username]\AppData\Local\Temp`	User variables
PYTHONPATH	Python module search path	`C:\OCSPTesting` (if needed)	User variables

Common PATH Additions:

# Add these to System PATH variable:
C:\OpenSSL-Win64\bin          # OpenSSL executable
C:\Python310\Scripts         # Python scripts (pip, etc.)
C:\Python310                  # Python executable
C:\Program Files\Git\bin      # Git commands

Quick Environment Check:

# Check if variables are set correctly:
echo %PATH%
echo %TEMP%
echo %TMP%
where openssl
where python
where git

Support

For issues and questions:

Check this README for common solutions
Verify all dependencies are properly installed
Check system logs for detailed error messages
Ensure OpenSSL and Python are in your system PATH
Run from a user-writable directory (not system directories)

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Name		Name	Last commit message	Last commit date
Latest commit History 47 Commits
__pycache__		__pycache__
assets		assets
ocsp_tester		ocsp_tester
CHANGELOG.md		CHANGELOG.md
FutureFeatures.txt		FutureFeatures.txt
LICENSE		LICENSE
OCSP_KEYERROR_FIX_SUMMARY.md		OCSP_KEYERROR_FIX_SUMMARY.md
OCSP_RESULTS_QUICK_REFERENCE.md		OCSP_RESULTS_QUICK_REFERENCE.md
OCSP_SIGNER_EXTRACTION.md		OCSP_SIGNER_EXTRACTION.md
OCSP_SIGNER_EXTRACTION_RESULTS.md		OCSP_SIGNER_EXTRACTION_RESULTS.md
OCSP_TECHNICAL_IMPLEMENTATION.md		OCSP_TECHNICAL_IMPLEMENTATION.md
OCSP_TESTING_DOCUMENTATION.md		OCSP_TESTING_DOCUMENTATION.md
PATH_VALIDATION_TESTS.md		PATH_VALIDATION_TESTS.md
README.md		README.md
TechnicalRequirements.txt		TechnicalRequirements.txt
app.py		app.py
comprehensive_ocsp_analysis_20251023_084552.json		comprehensive_ocsp_analysis_20251023_084552.json
comprehensive_ocsp_analyzer.py		comprehensive_ocsp_analyzer.py
enhanced_ocsp_signer_extractor.py		enhanced_ocsp_signer_extractor.py
enhanced_ocsp_signer_results_20251023_084129.json		enhanced_ocsp_signer_results_20251023_084129.json
ocsp_check_example.py		ocsp_check_example.py
ocsp_config.json		ocsp_config.json
ocsp_demo.py		ocsp_demo.py
ocsp_signature_analysis.py		ocsp_signature_analysis.py
ocsp_signature_analysis_20251023_092937.json		ocsp_signature_analysis_20251023_092937.json
ocsp_signature_verification_20251023_092730.json		ocsp_signature_verification_20251023_092730.json
ocsp_signature_verifier.py		ocsp_signature_verifier.py
ocsp_signer_extractor.py		ocsp_signer_extractor.py
ocsp_signer_results_20251023_083819.json		ocsp_signer_results_20251023_083819.json
ocsp_signer_results_20251023_083853.json		ocsp_signer_results_20251023_083853.json
requirements.txt		requirements.txt
sample_ca.key		sample_ca.key
sample_ca.pem		sample_ca.pem
sample_ca.srl		sample_ca.srl
sample_cert.csr		sample_cert.csr
sample_cert.key		sample_cert.key
sample_cert.pem		sample_cert.pem
test_crl_extraction.py		test_crl_extraction.py
test_dhs_ca4_enhancement.py		test_dhs_ca4_enhancement.py
test_dhs_ca4_trust_chain.py		test_dhs_ca4_trust_chain.py
test_ocsp_fix.py		test_ocsp_fix.py
test_ocsp_signer_validation.py		test_ocsp_signer_validation.py

Folders and files

Latest commit

History

Repository files navigation

OCSP Server Test Suite

Screenshots

Features

System Requirements

External Software Dependencies

1. Git (optional)

2. Python and pip

3. OpenSSL

GUI Requirements

Windows

Linux

macOS

Installation

Quick Setup Guide (Windows)

Prerequisites

1. Clone or Download

2. Create Virtual Environment (Recommended)

3. Install Python Dependencies

4. Verify Installation

Usage

GUI Application

Command Line Testing (Future Feature)

Input Requirements

Required Inputs

Optional Inputs

Test Categories

Protocol Tests

Security Tests

Performance Tests

Status Tests

CRL Tests

Export Formats

JSON Export

CSV Export

Troubleshooting

Common Issues

Permission Denied Errors

Working Directory Issues

Git Not Found

Python or pip Not Found

OpenSSL Not Found

OpenSSL PATH Issues (Windows)

Using Windows Environment Variables Dialog

Security Test Failures

tkinter Import Error (Linux)

Permission Denied (Windows)

Verification Commands

Advanced Configuration

Environment Variables

Network Configuration

Common Error Patterns

Pattern 1: Permission Denied + System Directory

Pattern 2: OpenSSL Not Found

Pattern 3: Security Test Failures

Pattern 4: CRL Tests Skipped

Pattern 5: Environment Variable Issues

Pattern 6: DHS CA4 OCSP Signature Verification Failure

DHS CA4 OCSP Enhancement

Overview

Problem Solved

How It Works

Benefits

Testing

Multi-Step OCSP Signer Validation

Overview

The 3-Step Validation Process

Step 1: Extract OCSP Signer Certificate

Step 2: Validate Signer Certificate Trust

Step 3: Validate OCSP Response Signature

Benefits

Testing

Environment Variables Quick Reference

Essential Variables for OCSP Testing Tool:

Common PATH Additions:

Quick Environment Check:

Support