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BIP32 Support

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

We support generating signatures for a BIP32 child key. Perform keygen once, and generate signatures for all BIP32 child keys!

Full example:​

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

const messageHash = 'e2a159d17b7bb714aed7675d7c7d394dec8d2e4337842848104694bf89c71c03';

// We will MPC functions here
export const keyDerivation = async (session: EcdsaSession) => {
  // Keygen
  const keyshare = await session.keygen();
  console.log('Generated keyshare: ', keyshare);
  const signConfig = {
    keyshare,
    messageHash,
    derivationPath: 'm', // This is the default, use your desired path here. For e.g 'm/1/2'
  };
  const signature = await session.sign(signConfig);
  console.log('Signature:', signature);
  // Get public key of newly generated wallet
  const publicKey = keyshare.publicKeyHex;
  console.log('Public key:', publicKey);

  // Derive child public key from keyshare
  const derivedPublicKey = await keyshare.deriveChildPublicKey('m');
  console.log('Derived public key:', derivedPublicKey);
};
  • When session.sign(signConfig) is called with a derivationPath, the signature is generated for the specified BIP32 derivation path.
  • derivationPath is a string that specifies the path to the child key. It defaults to 'm' (no derivation) if not provided.