Migrate your entire cryptographic stack to post-quantum algorithms through a single API. No rip-and-replace. No infrastructure rebuild. No downtime. ML-DSA, ML-KEM, FALCON, and SLH-DSA production-ready today on hardware you already own.
The question is no longer whether quantum computers will break classical cryptography. The question is when. NIST has finalized its first post-quantum standards (FIPS 203, 204, and 205), and the timeline for deprecating RSA and ECDSA is already in motion. Federal agencies face a 2035 deadline to migrate all cryptographic systems to quantum-resistant algorithms. Financial regulators are following. Cyber insurance carriers are asking about quantum readiness in renewal questionnaires today.
The real urgency comes from a threat that is already active: harvest-now, decrypt-later (HNDL). Nation-state adversaries are collecting encrypted traffic today with the intention of decrypting it when quantum computers become available. Data with long confidentiality requirements — medical records, financial transactions, government communications, legal documents, trade secrets — is vulnerable right now, not in some theoretical future. Every day your organization transmits data encrypted with RSA-2048 or ECDSA P-256, that data enters a collection pipeline that may never expire.
The NIST Post-Quantum Cryptography Standardization project has been running since 2016. The algorithms are finalized. The standards are published. The question facing every CISO and infrastructure team is not "should we migrate?" but "how fast can we migrate without breaking production?"
Traditional cryptographic migration is a full infrastructure rebuild. Replace your HSMs. Replace your certificate authority. Replace your key management system. Replace your TLS termination. Replace every integration that touches a cryptographic primitive. Test everything. Hope nothing breaks. Deploy over a maintenance window that somehow doesn't exist in a 24/7 operation.
This is how the industry migrated from SHA-1 to SHA-256, and it took most organizations 3-5 years. The post-quantum migration is an order of magnitude larger. You are not swapping one algorithm for a compatible replacement. You are changing fundamental mathematical structures: replacing integer factorization and elliptic curve discrete logarithms with lattice problems, hash-based constructions, and structured lattices. Key sizes change. Signature sizes change. Handshake latencies change. Every downstream system that validates a signature or negotiates a key must be updated.
The cost is staggering. A mid-size bank with 200 internal applications, 50 external integrations, and a mix of on-premise and cloud infrastructure faces an estimated $15-40 million rip-and-replace migration over 18-36 months. During that period, the organization runs mixed cryptographic states with incomplete protection, expanding the attack surface instead of shrinking it.
H33 takes a fundamentally different approach. Instead of replacing your infrastructure, you wrap it. Your existing authentication flows, key management systems, HSMs, and certificate authorities continue operating exactly as they do today. H33 adds a post-quantum cryptographic layer through a REST API that sits alongside your existing stack.
When your application authenticates a user today using Ed25519 or RSA, that authentication continues to work. H33 adds an ML-DSA signature to the same authentication event. When your system negotiates a TLS session using ECDH, that negotiation continues to work. H33 adds an ML-KEM key encapsulation to the same session. The classical cryptography provides backward compatibility. The post-quantum cryptography provides forward security.
This is not a shim or a proxy. H33 is a production cryptographic engine running 2.2 million authentications per second with 42-microsecond per-authentication latency. The post-quantum operations happen at the speed of the API call, not at the speed of a hardware migration project. You can be post-quantum protected on your first authenticated call, not after your last HSM replacement.
No rip-and-replace. Your existing infrastructure stays. H33 wraps it with post-quantum cryptography through a REST API. First API call to production PQ coverage in under a week.
Five phases from assessment to full post-quantum operation. Each phase is independently valuable. You don't need to complete all five to be protected.
Inventory all cryptographic touchpoints in your infrastructure. Identify which algorithms are in use, where keys are stored, which data has long-term confidentiality requirements, and which systems face regulatory deadlines. H33's quantum readiness assessment automates discovery across APIs, certificates, key stores, and configuration files. Typical duration: 1-2 weeks.
Deploy H33's API on a single authentication flow or signing operation. This is not a test environment — it is production post-quantum protection for one system. Validate latency, throughput, key sizes, and integration patterns. Confirm that existing systems are unaffected. Typical duration: 1-3 days.
Extend post-quantum coverage to all authentication, signature, and key exchange operations across your infrastructure. H33 operates in hybrid mode during conversion: every operation carries both classical and post-quantum cryptographic protection simultaneously. Typical duration: 4-12 weeks depending on system count.
Independent verification of every post-quantum operation. H33 provides cryptographic proof that each authentication, signature, and key exchange used the claimed algorithm, key, and parameters. Verification is deterministic and reproducible through the HATS specification. Typical duration: ongoing, automated.
Continuous monitoring of cryptographic health across your infrastructure. Algorithm usage dashboards, key rotation alerts, certificate expiration tracking, and anomaly detection for cryptographic operations. Crypto agility means you can rotate algorithms without redeploying if NIST revises standards or new attacks are discovered. Typical duration: permanent.
Post-quantum migration covers every cryptographic operation in your infrastructure that depends on the hardness of integer factorization (RSA), discrete logarithms (DH, DSA), or elliptic curve discrete logarithms (ECDSA, ECDH, Ed25519). Here is what changes and what stays the same.
| Operation | Classical (Vulnerable) | Post-Quantum (H33) | Migration Method |
|---|---|---|---|
| Authentication Signatures | Ed25519, ECDSA, RSA-2048 | ML-DSA-65 (FIPS 204) | API wrap |
| Document Signing | RSA-4096, ECDSA P-384 | SLH-DSA (FIPS 205) | API wrap |
| Key Exchange | ECDH P-256, X25519 | ML-KEM-768 (FIPS 203) | API wrap |
| TLS Sessions | ECDHE + RSA/ECDSA | ML-KEM + ML-DSA hybrid | Gateway proxy |
| Attestation | Not applicable | H33-74 (74-byte PQ attestation) | API addition |
| Governance Records | SHA-256 + ECDSA logs | SHA3-256 + ML-DSA chains | API wrap |
| Symmetric Encryption | AES-256-GCM | AES-256-GCM (unchanged) | No change needed |
| Hash Functions | SHA-256, SHA-384 | SHA-256, SHA3-256 (unchanged) | No change needed |
Symmetric cryptography and hash functions are quantum-resistant. AES-256 and SHA-256 remain secure against known quantum algorithms (Grover's algorithm provides at most a square-root speedup, which AES-256 absorbs). Migration focuses exclusively on public-key operations.
The cost, risk, and timeline differences between traditional cryptographic migration and H33's API-first approach.
| Dimension | Rip-and-Replace | H33 API Conversion |
|---|---|---|
| Time to First PQ Operation | 6-18 months | Under 1 week |
| Full Migration Timeline | 18-36 months | 8-16 weeks |
| Infrastructure Changes | HSMs, CAs, KMS, TLS stacks, all integrations | API calls added to existing flows |
| Downtime Required | Multiple maintenance windows per system | Zero downtime |
| Backward Compatibility | Breaks classical integrations during transition | Hybrid mode preserves all classical operations |
| Estimated Cost (Mid-Size Bank) | $15-40 million | API subscription (usage-based pricing) |
| Compliance Gap During Migration | Mixed cryptographic state creates audit exceptions | Hybrid mode satisfies both classical and PQ requirements |
| Vendor Lock-In | Locked to HSM vendor's PQ timeline | Algorithm-agile; switch families via API |
| Algorithm Agility | Requires another hardware replacement cycle | API parameter change; no redeployment |
| Independent Verification | Vendor-dependent attestation | HATS-conformant, independently reproducible |
Every industry faces the same quantum threat, but the migration priorities and regulatory pressures differ. Here is how H33's API-first approach maps to specific sectors.
Banks hold data with 7-30 year retention requirements. Wire transfer authentication, SWIFT messaging signatures, and inter-bank key exchange are all vulnerable to harvest-now, decrypt-later. Federal regulators (OCC, FDIC, Federal Reserve) have issued guidance on quantum-readiness planning. H33 provides post-quantum authentication for transaction signing, wire verification, and account access without replacing core banking platforms.
Priority: Transaction signatures, wire authentication, inter-bank messaging
Banking solutions →CNSA 2.0 mandates are not optional. Federal agencies must migrate to ML-KEM for key exchange by 2030 and ML-DSA for signatures by 2033, with full deprecation of classical public-key cryptography by 2035. H33 enables agencies to meet these deadlines without multi-year infrastructure replacement projects. FedRAMP-compatible deployment options available.
Priority: Classified data protection, identity verification, cross-agency authentication
Government solutions →Protected health information (PHI) must remain confidential for the patient's lifetime plus retention requirements. A 30-year-old patient's records encrypted today with ECDSA need to remain secure until 2080 or beyond. HIPAA does not yet mandate post-quantum cryptography, but the harvest-now, decrypt-later threat makes PQ migration an immediate patient safety issue. H33 provides HIPAA BAA-covered post-quantum authentication and attestation.
Priority: PHI encryption, clinical system authentication, medical device attestation
Healthcare solutions →Every blockchain transaction ever recorded is authenticated with ECDSA. When quantum computers can solve the elliptic curve discrete logarithm problem, every historical private key is recoverable from its public key. This is not a future problem — it is a present-value calculation. H33 provides post-quantum attestation for on-chain transactions, wallet authentication, and smart contract governance without modifying consensus layers.
Priority: Wallet authentication, transaction attestation, governance signatures
Conversion guide →With an API-first approach, initial integration takes days, not months. A pilot deployment covering authentication signatures can be live in under a week. Full conversion of all cryptographic touchpoints typically completes in 8-16 weeks depending on the number of systems involved, compared to 12-24 months for traditional rip-and-replace approaches.
No. H33 operates as an API layer that wraps your existing infrastructure. Your HSMs, key stores, and certificate authorities continue operating. H33 adds post-quantum signature and key exchange capabilities on top of what you already have, so existing classical cryptography remains functional during and after migration.
H33 supports all four NIST-standardized post-quantum algorithms: ML-DSA (FIPS 204, formerly Dilithium) for digital signatures, ML-KEM (FIPS 203, formerly Kyber) for key encapsulation, SLH-DSA (FIPS 205, formerly SPHINCS+) for stateless hash-based signatures, and FN-DSA (formerly FALCON) for compact lattice-based signatures. These span three independent hardness assumptions: MLWE lattices, NTRU lattices, and stateless hash functions.
Yes. H33 supports hybrid mode where classical algorithms like Ed25519 and ECDH run alongside post-quantum algorithms like ML-DSA and ML-KEM simultaneously. This provides backward compatibility with existing systems while adding quantum resistance. You can drop the classical layer when your organization is ready.
H33 processes 2.2 million authentications per second on production hardware with a per-authentication latency of 42 microseconds. Post-quantum signatures are larger than classical ones (ML-DSA signatures are approximately 2.4 KB vs 64 bytes for Ed25519), but H33-74 attestation compresses the verification footprint to just 74 bytes per attestation while maintaining full post-quantum security.
Yes. H33 maintains SOC 2 Type II certification, HIPAA BAA support, and PCI DSS-compatible architecture. Post-quantum migration through H33 strengthens your compliance posture because regulators are increasingly requiring quantum-readiness planning. The migration itself does not disrupt existing compliance certifications because H33 operates as an additional security layer, not a replacement.
Get your API key and deploy post-quantum cryptography in production today. No infrastructure changes. No downtime. No rip-and-replace.