PQC Key Management, Simplified
Full post-quantum key lifecycle management, encryption, and digital signatures as managed APIs. We handle key generation, rotation, retirement, and storage — you focus on your product.
CAPABILITIES
Complete PQC Key Infrastructure
A managed platform for post-quantum key lifecycle, built on NIST-standardized algorithms.
Kyber768 KEM Encryption
NIST FIPS 203 (ML-KEM-768) key encapsulation mechanism. Powered by Open Quantum Safe — the industry-standard PQC library. Encrypt data with quantum-resistant keys at sub-15ms cryptographic latency, with end-to-end API response under 100ms including authentication and policy evaluation. Hybrid KEM-DEM scheme combines Kyber768 with HKDF-SHA256 and AES-256-GCM for payload encryption of any size. Key Wrapping API lets you protect your own AES or ChaCha symmetric keys with quantum-safe KEM — ideal for envelope encryption and key distribution workflows. Use encapsulate mode to receive only the quantum-safe shared secret — your plaintext never touches our servers. X-Wing hybrid mode (X25519 + ML-KEM-768) available on all paid plans for defense-in-depth.
Dilithium3 Digital Signatures
NIST FIPS 204 (ML-DSA-65) digital signature scheme. Powered by Open Quantum Safe — the industry-standard PQC library. Sign documents, invoices, and API responses with quantum-resistant signatures at sub-30ms cryptographic latency, with end-to-end API response under 150ms. Hash-Based Signing API enables detached signatures for large files — send only the SHA-256/384/512 hash, sign server-side, and verify anywhere without uploading the original file. Ideal for firmware updates, software binaries, and legal documents. Verify signatures locally without exposing private keys. Composite ML-DSA hybrid mode (ECDSA P-256 + ML-DSA-65) available on all paid plans for maximum assurance.
Non-Exportable Key Management
Private keys are generated and stored exclusively within the KMS secure enclave. No API endpoint can export private key material. Keys are encrypted at rest with AES-256-GCM (L1) or Cloud KMS envelope encryption (L2) on Professional plans and above, and referenced by handle, never by value.
Zero Trust Policy Engine
Every API request is evaluated against a dedicated policy engine with first-deny-wins rule chains. Plan-based restrictions, quota enforcement, and method-level access control. Fail-closed by default — if the engine is unavailable, all requests are denied.
API Key Management
Generate, rotate, and revoke API keys with zero downtime. Dual HMAC-SHA256 hashing for timing-safe authentication. Brief concurrent window during rotation ensures seamless key transitions without service interruption.
USE CASES
Built for Real-World Applications
Qpher uses Key Encapsulation Mechanism (KEM) — we generate a quantum-safe shared secret that you use to encrypt files locally. Your sensitive data never leaves your infrastructure, and the API payload stays small for sub-100ms API latency.
Government & Defense
Defense secrets and diplomatic communications require protection for 25-50 years — well into the quantum computing era. Adversaries are already harvesting encrypted traffic today, waiting for quantum computers to decrypt it later (HNDL attacks). Qpher provides NIST FIPS 203/204 compliant algorithms to sign procurement contracts, encrypt classified documents, and maintain complete audit trails for government compliance. U.S. NSM-10 requires federal agencies to complete PQC migration by 2035.
Financial Services
Banking transaction records, customer KYC data, and credit card tokens need protection for decades. Qpher encrypts sensitive financial data using Kyber768 KEM — your files never leave your infrastructure. Call our API to get a quantum-safe shared secret, then encrypt locally with AES-256-GCM. Dilithium3 signatures secure contracts, transaction confirmations, and audit reports. Zero-trust policy engine and key rotation ensure ongoing compliance.
Healthcare
Protected Health Information (PHI) is a high-value target for attackers. HIPAA requires encryption of PHI at rest and in transit, and clinical trial data is typically retained for 15-25 years. Qpher encrypts sensitive EHR fields and signs prescriptions and lab reports to ensure integrity. Non-exportable keys and comprehensive audit logging satisfy HIPAA encryption requirements without changing your existing healthcare system architecture.
Legal & Compliance
Attorney-client privilege demands the highest level of confidentiality. Legal documents — contracts, litigation files, M&A due diligence — require long-term protection and verifiable signatures. Qpher's KEM enables quantum-safe encryption without uploading sensitive files to external servers. Dilithium3 signatures remain verifiable in the quantum era. Full audit trails serve as court-admissible evidence, and multi-tenant isolation ensures complete data separation.
SaaS & Technology
SaaS companies store vast amounts of customer data and need to stay ahead of security threats. 'Quantum-safe' is becoming a competitive differentiator that wins enterprise trust. Qpher's simple REST API and SDKs integrate in minutes — encrypt API secrets, user tokens, and tenant data with just a few lines of code. Sub-100ms API latency means no impact on user experience. Focus on your core product while we handle PQC infrastructure.
Critical Infrastructure
Power grids, water utilities, transportation, and telecommunications have equipment lifecycles of 20-30 years. Attacks on these systems endanger public safety. Governments worldwide are mandating quantum-safe encryption for critical infrastructure. Qpher signs firmware updates with Dilithium3 to ensure integrity, encrypts SCADA commands and telemetry data, and provides strict access control through the policy engine. Version-controlled keys support long-term key lifecycle management.
Start Building with Post-Quantum Security
Get your API key and encrypt your first payload in under five minutes. Free tier includes 5,000 API calls per month.