Post-Quantum Cryptography API Dilithium3 signing. Kyber768 encryption. One API call.

NIST-standardized quantum-resistant cryptography as a service. No crypto libraries to install. No key management. Sub-100μs signing on commodity hardware.

NIST-Standardized Sub-100μs Signing Managed Keys

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Why PQCaaS

Quantum-ready cryptography without the complexity.

Quantum-Ready

Core

NIST-standardized algorithms (ML-DSA, ML-KEM). Drop-in protection before Q-Day.

Dilithium3 digital signatures
Kyber768 key encapsulation
AES-256-GCM hybrid encryption
Hybrid Noise XX handshakes

Zero Setup

Simple

No crypto libraries. No key management. Sign, encrypt, and verify in one HTTP call.

One POST request to sign
One POST request to encrypt
Base64 in, base64 out
Python SDK available

Managed Keys

Secure

Private keys never leave the server. We handle generation, storage, and rotation.

Auto-generated key pairs on signup
Server-side key storage
One-click key rotation
Public key export for verification

Try It

Sign a message in one API call.

bash

# Sign a document
curl -X POST https://pq-api.cyclecore.ai/v1/sign \
  -H "X-API-Key: pq_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"message": "aGVsbG8gd29ybGQ="}'

# Response
{
  "signature": "MIIFkj...",
  "public_key": "a3f2c1...",
  "latency_us": 1842.5
}

python

from cyclecore_pq import CycleCoreClient

client = CycleCoreClient("pq_live_YOUR_KEY")
result = client.sign(b"hello world")
print(result.valid)  # True

Use Cases

Crypto & DeFi

Post-quantum wallet signing. Every transaction signed with Dilithium3, quantum-proof from day one. Protect against harvest-now-decrypt-later attacks.

Healthcare & Compliance

Attestation chains for tamper-evident audit logs. Export for regulatory review. Quantum-resistant audit trails for HIPAA and insurance verification.

Financial Services

Encrypt sensitive data with Kyber768. NIST-standardized, no algorithm migration needed. Ready for post-quantum compliance requirements.

IoT & Supply Chain

Batch signing for device attestation — up to 1,000 signatures per call. Low-latency security for real-time systems.

Secure Messaging

Hybrid Noise XX handshake for post-quantum key exchange between parties. Forward secrecy with quantum-resistant algorithms.