export function _hmac_key(hash: any, password: any): Uint8Array;
export class hmac_constructor {
    constructor(options: any);
    hash: any;
    BLOCK_SIZE: any;
    HMAC_SIZE: any;
    key: Uint8Array;
    verify: any;
    result: any;
    reset(options: any): hmac_constructor;
    process(data: any): hmac_constructor;
    finish(): hmac_constructor;
    _hmac_init_verify(verify: any): void;
}