export declare function toUtf8(str: string): Uint8Array;
export declare function fromUtf8(data: Uint8Array): string;
export declare function toBase64(data: Record<string, any>): string;
export declare function fromBase64(payload: string): Record<string, any>;
export declare function fromBase64ToString(payload: string): string;
export declare const encodeStringToBase64: (data: string) => string;
export declare const encodeBase64ToString: (data: string) => string;
export declare const hexToBase64String: (hexString: string) => string;
export declare const base64ToHexString: (base64String: string) => string;