Method _negotiateARDAuth

core/rfb.js:1794–1833

()

    }

    _negotiateARDAuth() {

        if (this._rfbCredentials.username === undefined ||
            this._rfbCredentials.password === undefined) {
            this.dispatchEvent(new CustomEvent(
                "credentialsrequired",
                { detail: { types: ["username", "password"] } }));
            return false;
        }

        if (this._rfbCredentials.ardPublicKey != undefined &&
            this._rfbCredentials.ardCredentials != undefined) {
            // if the async web crypto is done return the results
            this._sock.sQpushBytes(this._rfbCredentials.ardCredentials);
            this._sock.sQpushBytes(this._rfbCredentials.ardPublicKey);
            this._sock.flush();
            this._rfbCredentials.ardCredentials = null;
            this._rfbCredentials.ardPublicKey = null;
            this._rfbInitState = "SecurityResult";
            return true;
        }

        if (this._sock.rQwait("read ard", 4)) { return false; }

        let generator = this._sock.rQshiftBytes(2);   // DH base generator value

        let keyLength = this._sock.rQshift16();

        if (this._sock.rQwait("read ard keylength", keyLength*2, 4)) { return false; }

        // read the server values
        let prime = this._sock.rQshiftBytes(keyLength);  // predetermined prime modulus
        let serverPublicKey = this._sock.rQshiftBytes(keyLength); // other party's public key

        let clientKey = legacyCrypto.generateKey(
            { name: "DH", g: generator, p: prime }, false, ["deriveBits"]);
        this._negotiateARDAuthAsync(keyLength, serverPublicKey, clientKey);

        return false;
    }

    async _negotiateARDAuthAsync(keyLength, serverPublicKey, clientKey) {
        const clientPublicKey = legacyCrypto.exportKey("raw", clientKey.publicKey);