void background_DoWork(object sender, DoWorkEventArgs e)
{
// Get the RSA public key that we will use
string cert = http.Post(address, "getkey=y");
rsa.LoadCertificateFromString(cert);
// Generate the AES keys, encrypt them with the RSA public key, then send them to the PHP script.
aes.GenerateRandomKeys();
string key = Utility.ToUrlSafeBase64(rsa.Encrypt(aes.EncryptionKey));
string iv = Utility.ToUrlSafeBase64(rsa.Encrypt(aes.EncryptionIV));
string result = http.Post(address, "key=" + key + "&iv=" + iv);
// If the PHP script sends this message back, then the connection is now good.
connected = (result == "AES OK");
}
public frmMain()
{
InitializeComponent();
secure = new SecurePHPConnection();
secure.OnConnectionEstablished += new SecurePHPConnection.ConnectionEstablishedHandler(secure_OnConnectionEstablished);
secure.OnResponseReceived += new SecurePHPConnection.ResponseReceivedHandler(secure_OnResponseReceived);
// For the second test we are just going to test RSA by hard coding in the key on both the client and server sides
rsa = new RSAtoPHPCryptography();
rsa.LoadCertificateFromString("-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----");
http = new AsyncHttpControl();
http.OnHttpResponse += new AsyncHttpControl.ResponseCallback(http_OnHttpResponse);
http2 = new AsyncHttpControl();
http2.OnHttpResponse += new AsyncHttpControl.ResponseCallback(http2_OnHttpResponse);
// A simple AES test that decrypts a message with a base64 encoded 256 bit key and IV
AEStoPHPCryptography aes = new AEStoPHPCryptography("YWJjZGVmZ2hpamtsbW5vcGFiY2RlZmdoaWprbG1ub3A=", "YWJjZGVmZ2hpamtsbW5vcA==");
txtMessage2.Text = aes.Decrypt("34sFYu82zUy4Yrp22lmYN2rlLU1SmwTySx2QhjFGboc=");
}