vendor · quantum risk
Quantum-safe SSH products | Quantum-Safe Claims & Education
Verdict
“Quantum-safe SSH” claims need version-level proof. Most fleets still use classical host keys (RSA/ECDSA/Ed25519); track OpenSSH and vendor PQ experiments carefully.
Overview
SSH is a high-value admin surface. Category pages guide questions; host-key and certificate pages cover operational inventory.
Cryptographic profile
- Signatures: SSH host and user keys, Optional PQ/hybrid key exchange (implementation-specific)
- Hash: Key fingerprints
- Public-key exposure: Remote admin identities and bastions.
Claim scrutiny (buyer checklist)
Marketing / stated claims
- Post-quantum SSH
- Quantum-resistant remote access
Open questions
- Which PQ SSH KEMs are interoperable in your fleet?
Educational analysis only. Verify primary sources, specs, and audits yourself before any financial or procurement decision.
What breaks
- Decade-old RSA host keys
- PQ demos not in enterprise support channels
- Bastions left classical while apps hybridize
Mitigations
- Inventory host key algorithms
- SSH certificates for agility
- Follow OpenSSH release notes for PQ work
FAQ
Is Ed25519 quantum-safe?
No—strong classically, not post-quantum.
Related?
/is-quantum-proof/ssh and ssh-host-keys
Key concepts (technical dictionary)
Terms used on this page — open a definition: