export declare class CryptoUtil {
    static A0_IDENTIFIER: Uint8Array;
    static blake2b256(val: any): Uint8Array;
    static uia2hex(arrayBuffer: any, ignorePrefix?: boolean): string;
    static hex2ua(hex: any): Uint8Array;
    static createA0Address(publicKeyBuffer: any): string;
    static concatBuffer(buffer1: Uint8Array, buffer2: Uint8Array, length: any): Uint8Array;
    static convertnAmpBalanceToAION(balance: any): number;
    static convertAIONTonAmpBalance(balance: any): number;
}