PKI Certificate Analysis Results
Demo Session: demo-pki-1234567...Analysis Summary
This enterprise PKI certificate represents a typical high-risk quantum vulnerability scenario. The combination of RSA-2048, SHA-256, and ECDSA P-256 creates multiple attack vectors that will be completely compromised by quantum computers. The certificate's 2027 expiration overlaps with conservative quantum threat estimates, requiring immediate migration planning. This assessment identifies 4 critical vulnerabilities that could expose all encrypted communications and digital signatures to future quantum attacks.
Critical Issues (4)
RSA-2048 Key Algorithm
Quantum-vulnerable RSA encryption detected in primary certificate
Recommendation: Immediate migration to ML-KEM-768 or CRYSTALS-Kyber required. RSA-2048 will be broken by quantum computers by 2030-2035 according to NIST projections.
SHA-256 Signature Algorithm
Classical signature algorithm susceptible to Grover's quantum attack
Recommendation: Replace with SLH-DSA (SPHINCS+) or ML-DSA (CRYSTALS-Dilithium) quantum-resistant signatures. Current algorithm reduces to 128-bit security under quantum attack.
ECDSA P-256 Intermediate CA
Elliptic curve cryptography vulnerable to Shor's algorithm
Recommendation: Migrate entire certificate chain to post-quantum algorithms. ECDSA P-256 provides zero security against quantum computers.
Weak Key Usage Extensions
Certificate allows both signing and encryption with same quantum-vulnerable key
Recommendation: Separate signing and encryption certificates using distinct post-quantum algorithms for each function.
Moderate Issues (4)
Certificate Validity Period
Certificate expires December 2027, overlapping with predicted quantum threat window
Recommendation: Accelerate renewal timeline to complete migration by 2026. Plan hybrid post-quantum deployment within 18 months.
Subject Alternative Names
Multiple domain bindings increase attack surface during transition period
Recommendation: Consider domain-specific certificates to minimize impact during quantum migration.
OCSP Stapling Configuration
OCSP responses also use quantum-vulnerable signatures
Recommendation: Ensure OCSP infrastructure is included in post-quantum migration planning.
Certificate Transparency Logs
CT log entries create permanent record of quantum-vulnerable certificates
Recommendation: Monitor CT logs for certificate replacement verification during migration.
Compliant Items (3)
Certificate Chain Length
Optimal 3-level certificate hierarchy maintained
Note: Certificate chain structure follows best practices and will support post-quantum algorithm integration.
Key Usage Constraints
Proper key usage extensions implemented
Note: Certificate constraints are correctly configured for secure post-quantum transition.
Certificate Revocation Infrastructure
Both CRL and OCSP revocation mechanisms active
Note: Revocation infrastructure is properly configured but requires post-quantum signature updates.
Strategic Recommendations
- Begin immediate evaluation of NIST-standardized post-quantum algorithms (ML-KEM, ML-DSA, SLH-DSA)
- Develop 24-month migration timeline with hybrid classical-quantum phase by Q2 2025
- Implement quantum-safe certificate authority infrastructure for new certificate issuance
- Establish quantum readiness assessment program across all PKI-dependent systems
- Plan for increased certificate sizes (post-quantum certificates are 10-100x larger)
- Update all applications to support post-quantum certificate formats and validation
- Create incident response procedures for quantum computing breakthrough announcements
- Coordinate migration with cloud providers and third-party certificate authorities
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