/**
 * Calculate BLAKE3 hash of data (using SHA-256 as fallback)
 */
export declare function blake3Hash(data: Uint8Array): Uint8Array;
/**
 * Simple CRC32 implementation
 */
export declare function crc32(data: Uint8Array): number;
/**
 * Convert number to big-endian bytes
 */
export declare function numberToBytes(value: number, size: number): Uint8Array;
/**
 * Convert big-endian bytes to number
 */
export declare function bytesToNumber(bytes: Uint8Array): number;
/**
 * Convert string to UTF-8 bytes
 */
export declare function stringToBytes(str: string): Uint8Array;
/**
 * Convert UTF-8 bytes to string
 */
export declare function bytesToString(bytes: Uint8Array): string;
/**
 * Concatenate multiple Uint8Arrays
 */
export declare function concatBytes(...arrays: Uint8Array[]): Uint8Array;
/**
 * Compare two Uint8Arrays for equality
 */
export declare function bytesEqual(a: Uint8Array, b: Uint8Array): boolean;
/**
 * Generate random bytes
 */
export declare function randomBytes(length: number): Uint8Array;
/**
 * Get current timestamp in seconds since UNIX epoch
 */
export declare function getCurrentTimestamp(): number;
/**
 * Validate timestamp (not too far in future)
 */
export declare function isValidTimestamp(timestamp: number, maxFutureDrift?: number): boolean;
/**
 * Convert hex string to bytes
 */
export declare function hexToBytes(hex: string): Uint8Array;
/**
 * Convert bytes to hex string
 */
export declare function bytesToHex(bytes: Uint8Array): string;
/**
 * Validate creator ID format (32 bytes)
 */
export declare function isValidCreatorId(creatorId: Uint8Array): boolean;
/**
 * Generate a creator ID from string
 */
export declare function generateCreatorId(identifier: string): Uint8Array;
/**
 * Pad data to specific size
 */
export declare function padBytes(data: Uint8Array, targetSize: number, paddingByte?: number): Uint8Array;
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