import { Bitcoind } from '../../types';
type WalletPassphraseParams = {
    bitcoind: Bitcoind;
    passphrase: string;
    timeout: number;
};
/**
 * walletpassphrase "passphrase" timeout
 *
 * Stores the wallet decryption key in memory for 'timeout' seconds.
 * This is needed prior to performing transactions related to private keys such as sending bitcoins
 * Note:
 * Issuing the walletpassphrase command while the wallet is already unlocked will set a new unlock
 * time that overrides the old one.
 *
 */
export declare function walletPassphrase(params: WalletPassphraseParams): Promise<any>;
export {};