Key Custody

Definition

Key custody refers to the secure storage and management of private cryptographic keys. Custody solutions range from self-custody (you control keys) to third-party custody (institutions hold keys). Post-quantum custody must protect larger keys against quantum threats.

Technical Explanation

Custody types: self-custody (hardware wallets, software wallets), qualified custody (regulated institutions), and hybrid (multi-signature with shared control). Each balances security, convenience, and counterparty risk.

Post-quantum custody: longer keys require more storage. Backup procedures must handle larger data. HSMs and secure enclaves need post-quantum algorithm support. Migration from classical to quantum-resistant keys requires careful planning.

SynX Relevance

SynX supports multiple custody models—all with quantum-resistant keys. Self-custody with HD wallets, institutional custody with HSMs, or multi-signature shared custody. Your Kyber-768 and SPHINCS+ keys remain protected regardless of custody choice.

Frequently Asked Questions

Should I self-custody or use a custodian?: Self-custody: maximum control, you're responsible. Custodian: institutional protection, counterparty trust required.
How do I backup quantum-resistant keys?: Seed phrases work similarly. 24-word BIP-39 phrases recover all derived keys including quantum-resistant ones.
What's the best custody for SynX?: Depends on your needs. Personal users: hardware wallets. Institutions: qualified custodians with PQC support.

Secure quantum-resistant custody. Protect your SynX keys