/// <reference types="node" />
/// <reference types="node" />
import * as crypto from 'node:crypto';
export declare class UnsuitablePrivateKeyError extends Error {
    constructor(message: string);
}
/** Type-checked wrapper on createPrivateKey. */
export declare class EcdhPrivateKey {
    key: crypto.KeyObject;
    constructor(pemEncoded: Buffer);
    exchange(publicKey: Buffer): {
        secret: Buffer;
        publicKey: Buffer;
    };
}
declare class AesGcm128Encrypter {
    key: Buffer;
    nonce: Buffer;
    seq: Uint8Array;
    constructor(key: Buffer, nonce: Buffer);
    encrypt(plaintext: Buffer): Buffer;
}
declare class AesGcm128Decrypter {
    key: Buffer;
    nonce: Buffer;
    seq: Uint8Array;
    constructor(key: Buffer, nonce: Buffer);
    decrypt(ciphertext: Buffer): Buffer;
}
declare class HpkeContext {
    encap: Buffer;
    sender: AesGcm128Encrypter;
    receiver: AesGcm128Decrypter;
    constructor(encap: Buffer, sender: AesGcm128Encrypter, receiver: AesGcm128Decrypter);
    static setupAuthS(pkR: Buffer, info: Buffer, skS: EcdhPrivateKey): HpkeContext;
    static setupBaseS(pkR: Buffer, info: Buffer): HpkeContext;
}
export declare class Session {
    context: HpkeContext;
    constructor(peerPublicKey: Buffer, ourPrivateKey: EcdhPrivateKey);
    encap(): Buffer;
    encryptMessage(message: Buffer): Buffer;
    decryptMessage(ciphertext: Buffer): Buffer;
}
export declare function BaseSeal(publicKey: Buffer, message: Buffer): {
    encap: Buffer;
    ciphertext: Buffer;
};
export {};