export default SecureChannel;
export namespace STATE {
    const INIT: string;
    const AWAITING_RESPONSE: string;
    const AWAITING_ACK: string;
    const SECURE: string;
    const FAILED: string;
}
export namespace MSG {
    const INIT_1: string;
    export { INIT_1 as INIT };
    export const RESPONSE: string;
    export const COMPLETE: string;
    export const ACK: string;
    export const ENVELOPE: string;
    export const REKEY_SIGNAL: string;
    export const REKEY_ACK: string;
    export const CAPABILITIES: string;
}
declare class SecureChannel {
    constructor({ pinnedPublicKeyPem, sessionId, expectedSigningKeyId }?: {
        pinnedPublicKeyPem: any;
        sessionId: any;
        expectedSigningKeyId: any;
    });
    pinnedPublicKeyPem: string;
    expectedSigningKeyId: any;
    sessionId: any;
    state: string;
    privateKey: CryptoKey | null;
    publicKeyRaw: Uint8Array | null;
    c2sNonce: Uint8Array | null;
    s2cNonce: Uint8Array | null;
    sharedSecret: Uint8Array | null;
    salt: Uint8Array | null;
    generation: number;
    k_c2s: CryptoKey | null;
    k_s2c: CryptoKey | null;
    c2sSeq: bigint;
    s2cSeq: bigint;
    outboundLock: Promise<void>;
    inboundLock: Promise<void>;
    initiateHandshake(): Promise<{
        type: string;
        version: string;
        clientPublicKey: string;
        c2sNonce: string;
        sessionId: any;
    }>;
    handleResponse(msg: any): Promise<{
        type: string;
        iv: string;
        ciphertext: string;
        tag: string;
    }>;
    handleAck(msg: any): Promise<void>;
    encryptOutgoing(plainObj: any): Promise<{
        type: string;
        gen: number;
        iv: string;
        ciphertext: string;
        tag: string;
    }>;
    decryptIncoming(envelope: any): Promise<any>;
    handleRekeySignal(controlMsg: any): Promise<{
        type: string;
        gen: number;
        iv: string;
        ciphertext: string;
        tag: string;
    }>;
    isSecure(): boolean;
    isFailed(): boolean;
    installGeneration(gen: any): Promise<void>;
}