Key Recovery

Please refer to the Session creation section to learn how to create a new session.

Full example:

ECDSA

App.tsx

import { EcdsaSession } from '@silencelaboratories/silent-shard-sdk';

export const recovery = async (session: EcdsaSession) => {
  // Creating a new keyshare for demo purpose. In real application, you can use an existing keyshare.
  const keyshare = await session.keygen();
  console.log('Keyshare: ', keyshare.keyIdBase64);

  const recoveredKeyshare = await session.recovery(keyshare.publicKeyHex);
  console.log('Recovered keyshare: ', recoveredKeyshare.keyIdBase64);
};

EdDSA

App.tsx

import { EddsaSession } from '@silencelaboratories/silent-shard-sdk';

export const recovery = async (session: EddsaSession) => {
  // Creating a new keyshare for demo purpose. In real application, you can use an existing keyshare.
  const keyshare = await session.keygen();
  console.log('Keyshare: ', keyshare.keyIdBase64);

  const recoveredKeyshare = await session.recovery(keyshare.publicKeyHex);
  console.log('Recovered keyshare: ', recoveredKeyshare.keyIdBase64);
};

• When session.recovery(keyshare) is called, the app and the server exchange message to "recover" the MPC wallet. Refer to Key Recovery for more details.
• publicKeyHex is the public key of the client's share of the MPC wallet to be recovered.
• This process enhances the long-term security of the MPC wallet by proactively updating the client's and server's secret shares.
• The wallet's public address or key remains unchanged during this process.
• The recoveredKeyshare object is of type ECDSA Keyshare or EdDSA Keyshare and represents the client's new share of the MPC wallet.