import { Hex } from "viem";
export type MnemonicKey = {
    mnemonic: string;
    publicKeyDER: Hex;
};
export declare function mnemonicToPublicKey(mnemonic: string): MnemonicKey;
export declare function validateMnemonic(mnemonic: string): boolean;
export declare function generateMnemonicKey(): MnemonicKey;
export declare function signWithMnemonic(mnemonic: string, msg: Hex): Promise<Hex>;