Company Updates

Post-Quantum Cryptography (PQC) and Versa: Future-Proofing Enterprise Security Against Quantum Threats

By Dhiraj Sehgal

Senior Director, Product Marketing
March 12, 2025

With the rapid evolution of quantum computing, traditional cryptographic methods, including TLS encryption, IPsec tunnels, and key exchange mechanisms, face increasing vulnerabilities. Quantum computers can break widely used encryption algorithms, necessitating the adoption of post-quantum cryptography (PQC) solutions.

Tech giants like Google have already implemented PQC-ready encryption. Google Chrome, for example, has introduced support for X25519Kyber768, a post-quantum cipher designed to counteract quantum attacks. However, this transition poses significant challenges for enterprise security platforms, TLS proxies, and firewall systems that must process these new cryptographic protocols without disrupting business operations.

Enterprise Challenges in Adopting Post-Quantum Cryptography

Enterprises face certain hurdles in implementing PQC, including:

1. Compatibility issues with existing security infrastructure
   Many enterprise security solutions, including TLS proxies and firewalls, are built around conventional cryptographic algorithms. The integration of PQC methods such as X25519Kyber768 disrupts traditional decryption, inspection, and security workflows.

2. Security blind spots in encrypted traffic
   Organizations rely on security proxies for compliance enforcement, data loss prevention (DLP), and threat detection. If PQC encryption is implemented without decryption capabilities, enterprises could experience security gaps due to the inability to inspect encrypted traffic.

3. Regulatory and compliance complexities
   Many industries must adhere to stringent security standards such as FIPS 140-3, NIAP validation, and DoD encryption requirements. Ensuring compliance while integrating PQC algorithms adds another layer of complexity to IT and security teams.

4. Lack of standardized implementations
   Although NIST has endorsed Crystals-Kyber as a post-quantum cryptographic standard, full-scale adoption is still in progress. Many security vendors have yet to integrate comprehensive PQC support across encryption layers, creating interoperability challenges.

How Enterprises Can Prepare for Post-Quantum Cryptography

To facilitate the transition to PQC, organizations should consider:

1. Gradual adoption of hybrid PQC algorithms
   A phased approach is crucial for enterprises transitioning to post-quantum security. Implementing hybrid key exchange methods, such as X25519Kyber768, allows organizations to maintain backward compatibility while preparing for full PQC adoption.

2. Upgrading security infrastructure for quantum-safe encryption
   Security vendors need to upgrade their cryptographic stacks with quantum-aware TLS libraries, enhanced cryptographic APIs, and operating system updates that support FIPS-compliant PQC functions (e.g., Ubuntu 22.04 LTS).

3. Ensuring compliance and regulatory alignment
   To meet FIPS 140-3 and NIAP compliance, enterprises must verify that their PQC implementations align with evolving security regulations. This includes obtaining certifications and ensuring cryptographic agility in security platforms.

4. Phasing out legacy cryptographic algorithms
   Organizations must proactively deprecate weak encryption methods and transition to PQC-compliant alternatives, ensuring long-term cryptographic resilience.

How Versa Secures PQC Negotiations

Versa has taken a proactive approach to PQC by integrating X25519Kyber768 into its security solutions, ensuring organizations remain quantum-secure while maintaining operational efficiency. When the Google Chrome browser initiates a request to a web server and attempts to negotiate X25519Kyber768, the Versa platform dynamically adapts to ensure secure and uninterrupted communication.

Scenario 1: If the server rejects X25519Kyber768, VOS facilitates a re-negotiation, allowing server to select a different cipher while maintaining session security since TLS decryption is not enforced.

Scenario 2: In case where the server accepts X25519Kyber768 and TLS encryption is not enabled, VOS seamlessly forwards the encrypted session without interference.

Scenario 3: However, if Versa does not yet support decryption for this hybrid key exchange mechanism, VOS ensures connectivity by negotiating a compatible non-Kyber alternative Cipher, preserving both security and performance. 

Ensuring a Smooth Transition to PQC

Versa’s quantum-ready security framework enables enterprises to transition to PQC without compromising security or business continuity. The hybrid PQC negotiation model ensures compatibility with existing cryptographic systems while preparing for full-scale post-quantum encryption.

Key Benefits of Versa’s PQC Strategy

• Future-Proof Security: Versa aligns with emerging PQC standards to ensure resilience against quantum threats.
• Seamless Enterprise Integration: Supports hybrid PQC and non-PQC environments to prevent disruptions.
• Regulatory Compliance: Maintains FIPS 140-3 and NIAP validation for government and enterprise security requirements.
• Operational Continuity: Ensures a smooth transition to PQC without compromising existing security frameworks.

As quantum computing accelerates, enterprises must future-proof their encryption strategies. Versa’s Universal SASE platform ensures a secure, compliant, and seamless transition to post-quantum cryptography.

Click here to learn how Versa’s PQC-ready solutions can help.