# Multi-Party Computation (MPC)

*Category: Phantom Secrets™.*

A cryptographic process where multiple parties jointly compute on a secret without any one party seeing the whole secret. In Phantom Secrets, recovery agents regenerate temporary secret shares, which are recombined inside a Toughkey to produce a usable private key for signing or encryption. The key exists only ephemerally, then is destroyed — ensuring no key persists at rest.

**Read more:** [/insights/alternatives-to-mpc-custody](https://www.lokblok.co/insights/alternatives-to-mpc-custody)

## Related terms in Phantom Secrets™

- [Phantomizing](https://www.lokblok.co/glossary/phantomizing)
- [Regen Tokens](https://www.lokblok.co/glossary/regen-tokens)
- [Ephemeral](https://www.lokblok.co/glossary/ephemeral)
- [Toughkey™](https://www.lokblok.co/glossary/toughkey)
- [Threshold Secret Sharing (TSShr)](https://www.lokblok.co/glossary/threshold-secret-sharing)
- [Threshold Signature Scheme (TSSig)](https://www.lokblok.co/glossary/threshold-signature-scheme)
- [Hierarchical Signatures](https://www.lokblok.co/glossary/hierarchical-signatures)
- [Business-Logic-Enforced Cryptography](https://www.lokblok.co/glossary/business-logic-enforced-cryptography)

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