/**
 * Hash utilities using Web Crypto API and DJB2.
 *
 * Provides `hash_sha256`, `hash_sha384`, `hash_sha512`, `hash_sha1` (Web Crypto, async)
 * and `hash_insecure` (DJB2, fast non-cryptographic).
 * For BLAKE3, see `hash_blake3` in `hash_blake3.ts`.
 *
 * @module
 */
/**
 * Computes a SHA-1 hash using Web Crypto API.
 *
 * @param data - String or binary data to hash. Strings are UTF-8 encoded.
 * @returns 40-character hexadecimal hash string
 */
export declare const hash_sha1: (data: BufferSource | string) => Promise<string>;
/**
 * Computes a SHA-256 hash using Web Crypto API.
 *
 * @param data - String or binary data to hash. Strings are UTF-8 encoded.
 * @returns 64-character hexadecimal hash string
 */
export declare const hash_sha256: (data: BufferSource | string) => Promise<string>;
/**
 * Computes a SHA-384 hash using Web Crypto API.
 *
 * @param data - String or binary data to hash. Strings are UTF-8 encoded.
 * @returns 96-character hexadecimal hash string
 */
export declare const hash_sha384: (data: BufferSource | string) => Promise<string>;
/**
 * Computes a SHA-512 hash using Web Crypto API.
 *
 * @param data - String or binary data to hash. Strings are UTF-8 encoded.
 * @returns 128-character hexadecimal hash string
 */
export declare const hash_sha512: (data: BufferSource | string) => Promise<string>;
/**
 * Computes a fast non-cryptographic hash using DJB2 algorithm.
 * Use for content comparison and cache keys, not security.
 *
 * Note: Strings use UTF-16 code units, buffers use raw bytes.
 * For non-ASCII, `hash_insecure(str) !== hash_insecure(encoder.encode(str))`.
 *
 * @param data - string or binary data to hash
 * @returns 8-character hex-encoded unsigned 32-bit hash
 */
export declare const hash_insecure: (data: BufferSource | string) => string;
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