Cryptographic Agility with PQC

What is Post-Quantum Cryptography and why it matters

Post-Quantum Cryptography (PQC) describes algorithms designed to resist attacks by quantum computers. For organizations that rely on long-lived digital evidence—contracts, medical records, code signing, archives—preparing for quantum threats is not optional. Classical algorithms like RSA and ECDSA have served us well, but the potential of quantum-capable adversaries means enterprises should adopt cryptographic agility: the ability to change algorithms, run hybrids, and prove which algorithms were used when.

Khatim PKI Server’s approach treats PQC as a strategic evolution, not a disruptive rip-and-replace. By adopting PQC-aware policies and hybrid mechanisms, organizations can preserve compatibility today while adding quantum-resistant protection for tomorrow.

PQC in Action: What’s Supported in Khatim PKI Server?

Adopting post-quantum cryptography is no more complex than configuring classical algorithms. With Khatim PKI Server’s PQC-ready capabilities, administrators can generate and manage critical cryptographic objects protected by Dilithium (ML-DSA) within familiar PKI workflows. Here we explore how it enables practical PQC deployment across multiple real-world use cases, including:

• CA Certificates & CRLs

• OCSP Responses

• Timestamp Responses

• End Entity Certificates

• PKCS#1 Signatures/Verification

Enabling Cryptographic Agility

Catch phrase: Agility by design, not by accident.

Khatim PKI Server provides practical, policy-driven support to introduce PQC into real-world PKI and signing workflows:

• Cryptographic choices: Support for classical and PQC algorithms:

  • RSA: 2048, 4096, 8192

  • ECDSA: 192, 224, 256, 320, 384, 512

  • ML-DSA: Dilithium Security Level 2, 3, 5

• Hybrid signatures: Produce signatures containing both classical and PQC material so verifiers that understand only classical algorithms still validate while new verifiers gain quantum resistance.

• Policy-driven profiles: Administrators create signing/encryption profiles selecting classical, PQC or hybrid modes per application, client, or data type – enabling phased rollouts.

• HSM & cloud KMS integration: Keys—classical or PQC-capable—are generated or imported under hardware protection (on-prem HSMs or cloud KMS) so private material never leaves trusted boundaries.

• Auditability & telemetry: Khatim PKI Server logs which algorithms and profiles were used per certificate/signature so auditors and future verifiers can prove the cryptographic timeline.

This combination of choices, policies, and hardened key management gives teams the flexibility to test, measure, and migrate without interrupting services.