import { Hex } from "viem";
export declare function isDERPubKey(pubKeyHex: Hex): boolean;
export declare function derKeytoContractFriendlyKey(pubKeyHex: Hex): [Hex, Hex];
export declare function contractFriendlyKeyToDER(accountPubkey: readonly [Hex, Hex]): Hex;
export declare function parseAndNormalizeSig(derSig: Hex): {
    r: bigint;
    s: bigint;
};