/**
 * Convert a single byte to uppercase hex string
 */
export declare function byteToHex(byte: number): string;
/**
 * Convert a Uint8Array to uppercase hex string
 */
export declare function bytesToHex(bytes: Uint8Array): string;
/**
 * Convert a number to uppercase hex string with specified padding
 */
export declare function numberToHex(num: number, padLength?: number): string;
/**
 * Convert hex string to Uint8Array
 */
export declare function hexToBytes(hex: string): Uint8Array;
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