Threshold Signature Scheme (TSSig)

A form of MPC where the private key is never reconstructed at all. Instead, each participant produces a partial signature, and these are combined to form a complete digital signature. Unlike Phantom Secrets (where shares recombine inside a Toughkey), in TSSig the key never exists even ephemerally — only the final signature does. Lokblok implements TSSig directly in certified hardware, making it far stronger than software-only schemes.