Quantum-Ready Security for Blockchain
Check your wallet's quantum vulnerability in 30 seconds
DEMO SCAN RESULT
Medium-High Risk
23 transactions with exposed public keys
Assets: $100K ~ $1M at risk
Exposed Public Keys
23 txns
Reused Nonces
0 found
Large Holdings
$100K-$1M
10,847 wallets scanned · 68% at risk
Your transactions are already being collected
The Harvest Now, Decrypt Later (HNDL) threat is real — and your wallet may already be a target.
Harvest Now
Nation-state attackers are harvesting encrypted blockchain data and public keys exposed in transactions today.
Store & Wait
Petabytes of encrypted data are being stored, waiting for quantum computers powerful enough to break ECDSA.
Quantum Arrives
Cryptographically-relevant quantum computers are projected by 2030-2035. The timeline is accelerating.
Decrypt Later
Your private keys are derived from exposed public keys. All past transactions become vulnerable retroactively.
Products
Everything you need to make your blockchain application quantum-resistant. Compare ML-DSA vs SLH-DSA →
Keys & Signing
PQC key generation and hybrid attestation with ML-DSA and SLH-DSA. Drop-in replacement for ECDSA signing workflows.
Quantum Scanner
Comprehensive wallet vulnerability assessment. Analyze exposed public keys, reused nonces, and asset risk in seconds.
Safe Guard
Post-quantum policy enforcement for Safe (Gnosis) multisig wallets. Protect DAO treasuries from quantum threats.
Migration Planner
Plan and execute your ECDSA-to-PQC key transition with zero downtime. Step-by-step migration for any chain.
How It Works
Three steps to make your blockchain application quantum-ready.
Install
npm install @quantumsafe/sdkScan or Sign
import { QuantumSafe } from '@quantumsafe/sdk'
const qs = new QuantumSafe({ apiKey: '...' })
await qs.scan.wallet({
address: '0x1234...abcd',
chain: 'ethereum',
})Quantum-Ready
Built on NIST-Standardized PQC Algorithms
We implement the algorithms selected by NIST for post-quantum cryptographic standardization.
Use Cases
Quantum protection for every participant in the blockchain ecosystem.
DApp Developers
Add quantum protection to your decentralized application in just 4 lines of code. Drop-in SDK with TypeScript support.
Free / BuilderDAO Treasuries
Protect multi-sig wallets with post-quantum policy enforcement. Ensure your treasury survives the quantum transition.
Pro / EnterpriseExchanges & Custody
Enterprise-grade quantum readiness for custodial wallets. Batch scanning, managed KMS, and dedicated support.
EnterpriseSimple, Transparent Pricing
Start free. Scale as you grow. Enterprise-ready when you need it.
Free
500 API calls/month
- 1 PQC Key (BYOK)
- Quantum Scanner
- Signature Verify
- Community support
Builder
10K API calls/month
- 10 PQC Keys (BYOK)
- Hybrid Attestation
- Batch Scan (up to 10)
- Priority support
By subscribing, you agree to our Terms of Service
Pro
100K API calls/month
- 50 Keys (BYOK + KMS)
- KMS Managed Signing (AWS HSM)
- Batch Scan (up to 100)
- Priority support
By subscribing, you agree to our Terms of Service
Enterprise
Unlimited API calls
- Everything in Pro
- Safe Guard
- SLA 99.5%
- Migration Planner
- Custom Rate Limits
Frequently Asked Questions
Everything you need to know about quantum threats and post-quantum cryptography for blockchain.
QuantumSafe is a post-quantum cryptography (PQC) platform for blockchain developers, operated by Korea Advanced Materials Co., Ltd. (KOSDAQ: A062970). It provides APIs and SDKs for generating quantum-resistant digital signatures using NIST-standardized algorithms ML-DSA (FIPS 204) and SLH-DSA (FIPS 205), scanning Ethereum wallets for quantum vulnerability, and planning ECDSA-to-PQC migration paths.
Harvest Now, Decrypt Later (HNDL) is a threat model in which adversaries collect encrypted blockchain transactions today, store them, and plan to decrypt them once cryptographically-relevant quantum computers become available — projected between 2030 and 2035 by NIST and the Global Risk Institute. QuantumSafe addresses HNDL by enabling developers to generate post-quantum keys and scan existing wallets for quantum-vulnerable public key exposures.
QuantumSafe supports NIST-standardized post-quantum algorithms: ML-DSA (Module-Lattice Digital Signature Algorithm, FIPS 204) with ML-DSA-65 as the default recommendation, and SLH-DSA (Stateless Hash-Based Digital Signature Algorithm, FIPS 205). Both are designed to resist attacks from quantum computers while maintaining compatibility with existing blockchain infrastructure.
Yes, QuantumSafe offers a free tier with 500 API calls per month, 1 PQC key (BYOK), quantum wallet scanning, and signature verification. Paid plans include Builder ($19/month) with 10K API calls and 10 PQC keys, and Pro ($49/month) with 100K API calls, 50 keys, and KMS managed signing via AWS HSM.
No. QuantumSafe uses a BYOK (Bring Your Own Key) model — the server never stores your private keys. Key generation and signing happen client-side through the SDK, with only public keys and signatures transmitted to the API for verification and attestation.
QuantumSafe currently supports Ethereum for wallet vulnerability scanning, with the PQC key generation and signing APIs being blockchain-agnostic. The ML-DSA and SLH-DSA signatures can be used with any blockchain that supports custom signature schemes. Support for Bitcoin, Solana, and additional EVM-compatible chains is on the roadmap.
According to NIST and leading quantum computing researchers, cryptographically-relevant quantum computers capable of breaking ECDSA (the algorithm securing most blockchain wallets) are projected to arrive between 2030 and 2035. However, the HNDL threat means adversaries are already harvesting encrypted data today. NIST recommends beginning the migration to post-quantum cryptography now, which is why QuantumSafe provides tools to assess vulnerability and transition to quantum-safe algorithms.
Start protecting your blockchain assets today
Join developers and organizations already securing their crypto infrastructure against quantum threats.
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