# Disaster Recovery for Fireblocks Key Share

TSI understands the importance of business continuity and asset accessibility, even in unforeseen circumstances. To address potential disruptions, TSI provides a disaster recovery plan with Fireblocks' tool kit, ensuring that your assets remain secure and accessible even if Fireblocks' services become unavailable.

### Fireblocks Disaster Recovery Kit

Fireblocks provides a Disaster Recovery Kit that allows TSI to regenerate the Fireblocks key share (Key Share #1) in the event that Fireblocks ceases to exist or experiences a significant service disruption. This kit is designed to ensure that users can still access and manage their funds, even if Fireblocks is no longer operational.

### How It Works

1. **Kit Generation:** After TSI's onboarding with Fireblocks, a Disaster Recovery Kit is generated. This kit contains the master key of the Fireblocks workspace, which is essentially a seed used to generate key shares.
2. **Encryption and Storage:** The kit is encrypted using a public key provided by TSI and then securely transmitted to TSI. TSI stores this encrypted kit separately from the corresponding private key.
3. **Key Reconstruction:** In a disaster recovery scenario, TSI uses the Fireblocks Recovery Tool and the following components to reconstruct the necessary key share:
   * The encrypted Disaster Recovery Kit
   * The corresponding RSA private key
   * The wallet identifier of the specific wallet being recovered

With this information, the Fireblocks Recovery Tool can decrypt the kit, use the wallet identifier, and generate the corresponding Key Share #1.

### User Key Recovery

Once TSI has recovered Fireblocks' key share (#1), users can combine it with their own key share (#2) to reconstruct their full private key. This allows them to access and manage their funds independently of the TSI platform, if necessary.

### Important Notes

* The Disaster Recovery Kit is designed specifically for recovering Fireblocks' key share. Users are still responsible for securely storing their own key share (#2) and passphrase.
* TSI will communicate the disaster recovery process to users in the event of a Fireblocks service disruption.
* This process ensures that users maintain access to their funds even in unforeseen circumstances, demonstrating TSI's commitment to security and business continuity.

Reference: <https://ncw-developers.fireblocks.com/docs/disaster-recovery>