/**
 * Signs a transaction using the PKP's public key.
 * @param {Object} params - The parameters object
 * @param {string} params.pkpPublicKey - The PKP's public key
 * @param {any} params.tx - The transaction to sign
 * @param {string} params.sigName - The name of the signature
 * @returns {Promise<string>} The signed transaction.
 */
export declare const signTx: ({ sigName, pkpPublicKey, tx, }: {
    sigName: string;
    pkpPublicKey: string;
    tx: any;
}) => Promise<string>;
//# sourceMappingURL=signTx.d.ts.map