import { EmailHeader } from "./parser";
export interface DkimParams {
    v: string;
    a: string;
    b: string;
    bh: string;
    c?: string;
    d: string;
    h: string;
    i?: string;
    l?: string;
    q?: string;
    s: string;
    t?: string;
    x?: string;
    z?: string;
}
export declare const parseDkim: (headers: EmailHeader[]) => DkimParams;
export declare const getSignature: (dkim: DkimParams) => bigint;
export declare const getNonSignatureDkim: (headers: EmailHeader[]) => string;