/**
 * Fixes ASN.1 DER encoding of RSA keys to be compatible with browser Web Crypto
 *
 * This specifically targets the issue with modulus padding in SPKI format RSA keys.
 * In DER encoding, when the high bit of an INTEGER is set, a 0x00 byte must be
 * prepended to distinguish it from a negative number. Some libraries omit this padding,
 * which works in Node.js but causes browsers to reject the key.
 */
/**
 * Fixes ASN.1 DER encoding of RSA modulus to ensure proper padding
 *
 * @param publicKeyData The original public key data as ArrayBuffer
 * @returns Fixed key with proper modulus padding
 */
export declare function fixRSAModulusPadding(publicKeyData: ArrayBuffer): ArrayBuffer;