/**
 * @wharfkit/sealed-messages v1.2.0
 * https://github.com/wharfkit/sealed-messages
 *
 * @license
 * Copyright (c) 2023 Greymass Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 * 1.  Redistribution of source code must retain the above copyright notice, this
 *     list of conditions and the following disclaimer.
 * 
 * 2.  Redistribution in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 * 
 * 3.  Neither the name of the copyright holder nor the names of its contributors
 *     may be used to endorse or promote products derived from this software without
 *     specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT DESIGNED, LICENSED OR INTENDED FOR USE
 * IN THE DESIGN, CONSTRUCTION, OPERATION OR MAINTENANCE OF ANY MILITARY FACILITY.
 */
import { Struct, PublicKey, UInt64, Bytes, UInt32, Checksum512, PrivateKey } from '@wharfkit/antelope';

declare class SealedMessage extends Struct {
    from: PublicKey;
    nonce: UInt64;
    ciphertext: Bytes;
    checksum: UInt32;
}
declare function createSymmetricKey(secret: Checksum512, nonce: UInt64): Uint8Array;
declare function createIV(nonce: UInt64, secret: Checksum512): Checksum512;
declare function encryptMessage(iv: Checksum512, symmetricKey: Uint8Array, message: string): Bytes;
declare function decryptMessage(iv: Checksum512, symmetricKey: Uint8Array, message: Bytes): Uint8Array;
/**
 * Seals a message using AES encryption and a shared secret derived from given keys.
 * @param message - The message to seal
 * @param privateKey - The private key to use for encryption
 * @param publicKey - The public key to use for encryption
 * @param nonce - A nonce to use for encryption
 * @returns The sealed message as Bytes
 */
declare function sealMessage(message: string, privateKey: PrivateKey, publicKey: PublicKey, nonce: UInt64): Bytes;
declare function sealedMessagePayload(message: string, privateKey: PrivateKey, publicKey: PublicKey, nonce?: UInt64): SealedMessage;
/**
 * Decrypt a message using AES and shared secret derived from given keys.
 * @param message - The encrypted message bytes to decrypt
 * @param privateKey - The private key to use for deriving the shared secret
 * @param publicKey - The public key to use for deriving the shared secret
 * @param nonce - The nonce used in the encryption process
 * @returns The decrypted message as a UTF-8 string
 * @internal
 */
declare function unsealMessage(message: Bytes, privateKey: PrivateKey, publicKey: PublicKey, nonce: UInt64): string;

export { SealedMessage, createIV, createSymmetricKey, decryptMessage, encryptMessage, sealMessage, sealedMessagePayload, unsealMessage };