/**
 * Encrypt message for given recipient's public key.
 *
 * @param  publicKeyTo Recipient's public key (65 bytes)
 * @param  msg The message being encrypted
 * @return A promise that resolves with the ECIES structure serialized
 */
export declare function encrypt(publicKeyTo: Uint8Array, msg: Uint8Array): Promise<Uint8Array>;
/**
 * Decrypt message using given private key.
 *
 * @param privateKey A 32-byte private key of recipient of the message
 * @param encrypted ECIES serialized structure (result of ECIES encryption)
 * @returns The clear text
 * @throws Error If decryption fails
 */
export declare function decrypt(privateKey: Uint8Array, encrypted: Uint8Array): Promise<Uint8Array>;