⭐⭐⭐⭐ (4/5) for multisig; ⭐⭐⭐ (3/5) for niche protocols like MK-TESLA – strong but requires expertise. 4. Multikey Hardware (YubiKey-like, GPG smartcards) Definition: A single hardware token that can store and use multiple independent key pairs (e.g., PIV slots, GPG keys for different purposes, FIDO2 resident keys).
If you had a specific software or protocol in mind (e.g., “multikey in Redis” or “multikey in AWS KMS”), let me know and I’ll narrow the review.
❌ Key management becomes complex – which slot holds which key? ❌ Some software assumes one key per token ❌ Limited storage (e.g., YubiKey 5 holds ≤ 25 resident FIDO2 keys)
❌ Complexity – key management, coordination overhead ❌ Larger signatures or additional rounds of communication ❌ Not standardized across all systems
❌ Standard library often missing (C++, Java, Python need custom or third-party) ❌ Memory overhead for multiple key mappings if done naively
⭐⭐⭐⭐ (4/5) for multisig; ⭐⭐⭐ (3/5) for niche protocols like MK-TESLA – strong but requires expertise. 4. Multikey Hardware (YubiKey-like, GPG smartcards) Definition: A single hardware token that can store and use multiple independent key pairs (e.g., PIV slots, GPG keys for different purposes, FIDO2 resident keys).
If you had a specific software or protocol in mind (e.g., “multikey in Redis” or “multikey in AWS KMS”), let me know and I’ll narrow the review.
❌ Key management becomes complex – which slot holds which key? ❌ Some software assumes one key per token ❌ Limited storage (e.g., YubiKey 5 holds ≤ 25 resident FIDO2 keys)
❌ Complexity – key management, coordination overhead ❌ Larger signatures or additional rounds of communication ❌ Not standardized across all systems
❌ Standard library often missing (C++, Java, Python need custom or third-party) ❌ Memory overhead for multiple key mappings if done naively
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