export declare class MD4 {
    static str(s: string): string;
    static core(x: number[], len: number): number[];
    static cmn(q: number, a: number, b: number, x: number, s: number, t: number): number;
    static ff(a: number, b: number, c: number, d: number, x: number, s: number): number;
    static gg(a: number, b: number, c: number, d: number, x: number, s: number): number;
    static hh(a: number, b: number, c: number, d: number, x: number, s: number): number;
    static safeAdd(x: number, y: number): number;
    static rol(num: number, cnt: number): number;
    static str2binl(str: string): number[];
    static binl2str(bin: number[]): string;
    static get chrsz(): number;
}
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