⭐⭐⭐⭐ (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).
Tagging systems, permissions lists, event participants, any “many-to-many” flattened into a document. multikey
❌ Only one array field per compound index (MongoDB limitation) ❌ Index size can explode if arrays are huge (each element → one index entry) ❌ Performance degrades with very high cardinality arrays (many unique values per document) ⭐⭐⭐⭐ (4/5) for multisig; ⭐⭐⭐ (3/5) for niche
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. ⭐⭐⭐⭐ (4/5) for multisig
