/**
 * Encode bytes to Base32 string
 *
 * @remarks
 * Performance: Uses array.join() instead of string concatenation
 * to avoid creating intermediate strings in the hot path.
 *
 * @param input - Bytes or string to encode
 * @param withPadding - Whether to include padding (default: true)
 *
 * @returns Base32 encoded string
 */
export declare const base32Encode: (input: string | Uint8Array, withPadding?: boolean) => string;
/**
 * Decode Base32 string to bytes
 *
 * @remarks
 * Security: Case-insensitive decoding per RFC 4648 recommendation.
 * Performance: Uses Map lookup for O(1) character value retrieval.
 * Performance: Pre-allocates output array based on input length.
 *
 * @param base32 - Base32 string to decode (case-insensitive)
 *
 * @throws ({@link InternalError}) - if invalid Base32 character is found
 *
 * @returns Decoded bytes
 */
export declare const base32Decode: (base32: string) => Uint8Array;