Certificate Chain Deep Dive

Comprehensive certificate chain validation and CRL revocation analysis.

HTTPS://

Advanced Certificate Chain Analysis

Deep dive into SSL/TLS certificate security with comprehensive validation, revocation checking, and trust path analysis.

Complete Chain Validation

Validates the entire certificate chain from end-entity to root CA, checking for missing intermediates and proper certificate ordering.

CRL Revocation Checking

Downloads and analyzes Certificate Revocation Lists (CRLs) to detect if certificates have been revoked by the issuing CA.

Trust Path Analysis

Analyzes the trust path to known root Certificate Authorities and identifies potential browser compatibility issues.

Certificate Details

Extract and display comprehensive certificate information including extensions, key usage, and validity periods.

OCSP & CRL URLs

Extracts and tests OCSP and CRL distribution points for real-time certificate status validation.

Security Recommendations

Provides actionable recommendations for improving certificate configuration and security posture.

What Gets Analyzed

Our comprehensive analysis goes beyond basic SSL checking to provide deep insights into certificate security.

Certificate Chain Validation

Certificate validity periods (not yet valid, expired)
Chain completeness and proper ordering
Issuer-subject relationship verification
Self-signed certificate detection
Root CA trust path validation

CRL Revocation Analysis

Real-time CRL download and parsing
ASN.1 binary structure analysis
Serial number hex matching
OCSP and CRL distribution points
Revocation status reporting
🔍 Advanced CRL Analysis

Our tool performs binary analysis of ASN.1 CRL structures, searching for certificate serial numbers in the revoked certificates section. This goes beyond simple OCSP checking to provide comprehensive revocation status validation.

Common Certificate Issues We Detect

Identify and resolve certificate configuration problems before they impact your users.

Revoked Certificates

Certificates that have been revoked by the CA and should not be trusted by browsers.

Impact: Complete loss of trust, browser warnings

Missing Intermediates

Server fails to provide intermediate certificates needed to build a complete trust chain.

Impact: Browser compatibility issues, trust failures

Expired Certificates

Certificates that have passed their expiration date and are no longer valid.

Impact: Browser security warnings, connection failures

Self-Signed Certificates

Certificates signed by themselves rather than a trusted Certificate Authority.

Impact: Not trusted by browsers, security warnings

Chain Order Issues

Certificates presented in incorrect order or with broken issuer-subject relationships.

Impact: Chain validation failures, trust path issues

Untrusted Root CAs

Certificate chains that don't lead to a root CA trusted by major browser vendors.

Impact: Browser warnings, reduced user trust