/** @deprecated Use {@link sha256Hash} instead. */
export declare function hashSHA256(input: string): Promise<string>;
/** @deprecated Use {@link sha256HashBuffer} instead. */
export declare function hashSHA256ToBuffer(input: string): Promise<Buffer<ArrayBuffer>>;
/**
 * Synchronously computes the SHA-256 hash of a string and returns it as a
 * lowercase hexadecimal string.
 *
 * @param input - The string to hash.
 * @returns The SHA-256 digest encoded as a 64-character hex string.
 *
 * @example
 * ```ts
 * const digest = sha256Hash("hello");
 * // "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"
 * ```
 */
export declare function sha256Hash(input: string): string;
/**
 * Synchronously computes the SHA-256 hash of a string and returns the raw
 * 32-byte digest as a {@link Buffer}.
 *
 * @param input - The string to hash.
 * @returns The SHA-256 digest as a 32-byte `Buffer`.
 *
 * @example
 * ```ts
 * const digest = sha256HashBuffer("hello");
 * digest.length; // 32
 * ```
 */
export declare function sha256HashBuffer(input: string): Buffer<ArrayBuffer>;