/**
 * RC4 stream cipher (§7.6.2). Symmetric, so the same call both encrypts and
 * decrypts; used by the legacy V1/V2/V4 Standard security handlers.
 */
export declare function rc4(key: Uint8Array, data: Uint8Array): Uint8Array;
/** MD5 digest (RFC 1321) → 16 bytes; the key-derivation hash for V1/V2/V4. */
export declare function md5(input: Uint8Array): Uint8Array;
/**
 * SHA-1. Used by MS-OFFCRYPTO's standard encryption for its key derivation and
 * password verifier, and by agile encryption when the descriptor names it.
 */
export declare function sha1(input: Uint8Array): Uint8Array;
export declare function sha256(input: Uint8Array): Uint8Array;
export declare function sha512(input: Uint8Array): Uint8Array;
export declare function sha384(input: Uint8Array): Uint8Array;
export declare function aesCbcDecrypt(key: Uint8Array, iv: Uint8Array, data: Uint8Array, stripPad: boolean): Uint8Array;
/**
 * AES-ECB decrypt — every block on its own key, no chaining. MS-OFFCRYPTO's
 * standard encryption uses it for both the verifier and the package.
 */
export declare function aesEcbDecrypt(key: Uint8Array, data: Uint8Array): Uint8Array;
export declare function aesCbcEncrypt(key: Uint8Array, iv: Uint8Array, data: Uint8Array): Uint8Array;