All Algorithms
XMSS
Quantum SafeDigital Signature algorithm
This algorithm is resistant to all known quantum attacks.
Algorithm Details
Category
Digital Signature
Quantum Safety
Quantum Safe
Key Lengths (bits)
256, 512
NIST Status
Recommended (SP 800-208)
Notes
Stateful hash-based signature scheme standardized in RFC 8391 and recommended by NIST SP 800-208. Quantum-safe with minimal security assumptions (relies only on hash function security). Requires careful state management to avoid one-time key reuse.
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