ECDSA MPC Session API

The EcdsaSession class offers APIs that facilitate easy access to Multi-Party Computation (MPC) functionalities.

Import

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

Constructors

constructor

• new EcdsaSession(config): EcdsaSession

Creates a new ECDSA Session

Parameters

Name	Type	Description
config	SessionConfig	The configuration for the session.

Returns

EcdsaSession

Methods

export

▸ export(config): Promise<string>

Parameters

Name	Type
config	EcdsaExportConfig

Returns

Promise<string>

---

finishPresign

▸ finishPresign(config): Promise<string>

Parameters

Name	Type
config	EcdsaFinishPreSignConfig

Returns

Promise<string>

---

import

▸ import(config): Promise<Keyshare>

Import private key into MPC (client and server) keyshares

Parameters

Name	Type	Description
config	EcdsaImportConfig	The configuration for the key import.

Returns

Promise<Keyshare>

• Returns a promise that resolves to a refreshed Keyshare object.

---

keygen

▸ keygen(): Promise<Keyshare>

Generates a new Ecdsa keyshare

Returns

Promise<Keyshare>

Returns a promise that resolves to a Keyshare object.

---

preSign

▸ preSign(config): Promise<string>

Compute pre sign with the Ecdsa keyshare

Parameters

Name	Type	Description
config	EcdsaPreSignConfig	The configuration for the pre sign.

Returns

Promise<string>

• Returns a promise that resolves to a computed presign.

---

recovery

▸ recovery(keysharePublicKey): Promise<Keyshare>

Recover keyshare with public key

Parameters

Name	Type	Description
keysharePublicKey	string	Public in hex format of the existing keyshare object to be recovered.

Returns

Promise<Keyshare>

• Returns a promise that resolves to a recovered Keyshare object.

---

refresh

▸ refresh(keyshare): Promise<Keyshare>

Refreshes an existing Ecdsa keyshare

Parameters

Name	Type	Description
keyshare	Keyshare	The existing keyshare object to be refreshed.

Returns

Promise<Keyshare>

• Returns a promise that resolves to a refreshed Keyshare object.

---

sign

▸ sign(config): Promise<string>

Signs a message hash with the Ecdsa keyshare

Parameters

Name	Type	Description
config	EcdsaSignConfig	The configuration for the signing.

Returns

Promise<string>

• Returns a promise that resolves to a signature.