Q-Courier

Strategizing your transition to a quantum-safe ecosystem

Q-Courier Servers protect web and email communications from current and future quantum threats. By combining NIST-selected Post-Quantum Cryptography (PQC) with classical algorithms, these servers deliver hybrid security that ensures confidentiality, integrity, and authentication—while remaining fully compatible with existing clients. Indigenously developed and standards-aligned, the solution provides a future-proof approach to secure HTTPS and S/MIME email communications, making it ideal for government, defense, telecom, and critical infrastructure. We provide end-to-end Quantum-Resistant (QR) hardening for your digital infrastructure. By integrating PQC into TLS/SSL protocols and mail server encryption, we ensure that your emails, web traffic, and user credentials remain secure in a post-quantum world.

Key Highlights

  • Quantum-safe TLS for web servers
  • S/MIME email encryption with post-quantum signatures
  • Hybrid cryptography (Classical + PQC) ensures backward compatibility
  • NIST-selected PQC algorithms: Kyber (Key Exchange), Dilithium (Digital Signatures)
  • High performance and low-latency for enterprise workloads
  • Fully aligned with NIST PQC roadmap & ETSI PQC standards
Email Specification Sheet
Email Solution | Specifications
Email ProtocolsSMTP, POP3, IMAP
Transport SecuritySTARTTLS for SMTP, POP3, and IMAP
Encryption ModelHybrid encryption using Classical + Post-Quantum Cryptography
Key ExchangeCRYSTALS-Kyber (FIPS 203) combined with classical key exchange as defined in NIST SP 800-56A Rev. 3
Authentication & IntegrityDilithium digital signatures under FIPS 204 with classical signature fallback
TLS Versions SupportedTLS 1.2, TLS 1.3 (PQC-ready)
MTA-to-MTA SecurityQuantum-resistant encrypted channels between mail transfer agents
Client-to-Server SecuritySecure email submission and retrieval with quantum-safe TLS
Data Migration ServiceFully interoperable with existing mail servers, clients, and gateways
Future ReadinessDesigned for seamless transition to full post-quantum-only modes
Spam ProtectionAdvanced spam filtering with real-time reputation checks and content analysis
Malware & Virus ScanningAutomatic scanning of all inbound and outbound emails
Webmail InterfaceSecure browser-based email access
Email Archiving & LoggingCompliance-ready message tracking and audit logs
High Availability SupportSupports clustered MTAs, backups, and failover deployments
Backup & RestoreAutomated mailbox and configuration backups

Why Q-Courier ?

Traditional TLS and S/MIME rely solely on classical algorithms, which are vulnerable to future quantum attacks. Our hybrid PQC solution ensures long-term confidentiality and authentication while allowing a smooth, compatible migration to quantum-safe communications.

LEGAL & SUPPORT

Policies & Support

Learn how Q-Courier handles your data, understand the terms of use, and find out how to request account deletion. For any questions or issues, please contact our support team.

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Privacy Policy

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Terms & Conditions

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Account Deletion

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Support & Help

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