Difference to Multi-Signatures
What is the difference between TSS and Multi Signatures?
The main difference between Threshold Signature Schemes (TSS) and Multi-Signatures (MS) lies in their approach to generating signatures. In TSS, the signature is created by combining vault shares using Zero-Knowledge Proofs, ensuring that no single private key is ever constructed. In contrast, MS involves multiple private keys, each contributing to the creation of the final signature.
Visualization Threshold Signatures
Visualization Multi-Signatures
Increasing the inconvenience of Multi-Signatures (MS) is the fact that lost keys cannot be re-shared, and funds often need to be migrated to maintain security, leading to lower redundancy.
Here is a comparison of different factors for TSS and MS:
Private Key Storage
No private key is constructed; uses vault shares and Zero-Knowledge Proofs
Parties having multiple private keys
On-Chain Footprint
One Single Signature signing a Transaction on-chain
Multiple Signatures signing one Transaction; visible on-chain
Redundancy
High redundancy; lost shares can be re-shared and reconfigured
Low redundancy; lost keys require fund migration
Compatibility
Multi-Chain: ECDSA and EDDSA Support
Single Chain Support
Flexibility
Can adjust signing thresholds and replace lost devices
Fixed once created; each party having one private key
Adding participants
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This comparison shows that flexibility and security prevail in TSS over MS, making it a better application for managing digital assets.
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