static bool TryReadEncryptionMode(ref Utf8JsonReader reader,
out EncryptionModes mode)
{
if (!reader.TryReadToken(JsonTokenType.String))
{
mode = default;
return(false);
}
if (reader.ValueTextEquals(XSalsa20Poly1305Mode))
{
mode = EncryptionModes.XSalsa20_Poly1305;
return(true);
}
if (reader.ValueTextEquals(XSalsa20Poly1305SuffixMode))
{
mode = EncryptionModes.XSalsa20_Poly1305_Suffix;
return(true);
}
if (reader.ValueTextEquals(XSalsa20Poly1305LiteMode))
{
mode = EncryptionModes.XSalsa20_Poly1305_Lite;
return(true);
}
mode = default;
return(false);
}
private static string _Encrypt(this string plainText, EncryptionModes encryptionModes)
{
string salt;
Guid guid;
switch (encryptionModes)
{
case EncryptionModes.ConstantSaltNoneUserSessionNone:
salt = System.Web.Security.Membership.GeneratePassword(EncryptionHelper.SaltLength, 0);
guid = Guid.Empty;
break;
case EncryptionModes.ConstantSaltNoneUserSession:
salt = System.Web.Security.Membership.GeneratePassword(EncryptionHelper.SaltLength, 0);
guid = EncryptionHelper.CurrentUserSessionGuid;
break;
case EncryptionModes.ConstantSaltUserSessionNone:
salt = ConstantSalt;
guid = Guid.Empty;
break;
case EncryptionModes.ConstantSaltUserSession:
salt = ConstantSalt;
guid = EncryptionHelper.CurrentUserSessionGuid;
break;
default:
throw new ArgumentOutOfRangeException("", encryptionModes, null);
}
plainText = salt + guid.ToString("D") + plainText;
return(HttpServerUtility.UrlTokenEncode(plainText._Encrypt()));
// return Convert.ToBase64String(plainText._Encrypt());
}
public static void WriteSelectProtocol(Utf8JsonWriter writer,
IPEndPoint clientEndPoint, EncryptionModes bestMode)
{
writer.WriteStartObject();
writer.WriteNumber(OpcodePropertyName,
(int)VoiceGatewayOpcode.SelectProtocol);
writer.WriteStartObject(PayloadPropertyName);
writer.WriteString(ProtocolPropertyName, UdpValue);
writer.WriteStartObject(DataPropertyName);
Span <char> tempBuffer = stackalloc char[MaximumIPv4Length];
_ = clientEndPoint.Address.TryFormat(tempBuffer, out int length);
writer.WriteString(AddressPropertyName,
tempBuffer.Slice(0, length));
writer.WriteNumber(PortPropertyName, clientEndPoint.Port);
writer.WriteString(ModePropertyName, bestMode switch
{
EncryptionModes.XSalsa20_Poly1305_Lite
=> XSalsa20Poly1305LiteMode,
_ => throw new InvalidOperationException("Unknown mode")
});
public void EncryptinDataGeneationTest([Values] EncryptionModes encryptionMode)
{
var d = EncryptionDataGenerator.Generate((byte)encryptionMode);
var ed = new EncryptionData(Protocol.GpBinaryV162, d);
Assert.That(ed.IsValid);
Assert.That((EncryptionModes)ed.EncryptionMode, Is.EqualTo(encryptionMode));
switch (encryptionMode)
{
case EncryptionModes.PayloadEncryption:
Assert.That(ed.EncryptionSecret, Is.Not.Null);
Assert.That(ed.EncryptionSecret.Length, Is.EqualTo(32));
Assert.That(ed.AuthSecret, Is.Null);
break;
case EncryptionModes.PayloadEncryptionWithIV:
Assert.That(ed.EncryptionSecret, Is.Not.Null);
Assert.That(ed.EncryptionSecret.Length, Is.EqualTo(32));
Assert.That(ed.AuthSecret, Is.Null);
break;
case EncryptionModes.PayloadEncryptionWithIVHMAC:
Assert.That(ed.EncryptionSecret, Is.Not.Null);
Assert.That(ed.EncryptionSecret.Length, Is.EqualTo(32));
Assert.That(ed.AuthSecret, Is.Not.Null);
Assert.That(ed.AuthSecret.Length, Is.EqualTo(32));
break;
case EncryptionModes.DatagramEncyption:
Assert.That(ed.EncryptionSecret, Is.Not.Null);
Assert.That(ed.EncryptionSecret.Length, Is.EqualTo(32));
Assert.That(ed.AuthSecret, Is.Not.Null);
Assert.That(ed.AuthSecret.Length, Is.EqualTo(32));
break;
case EncryptionModes.DatagramEncyptionWithRandomInitialNumbers:
Assert.That(ed.EncryptionSecret, Is.Not.Null);
Assert.That(ed.EncryptionSecret.Length, Is.EqualTo(32));
Assert.That(ed.AuthSecret, Is.Not.Null);
Assert.That(ed.AuthSecret.Length, Is.EqualTo(32));
break;
case EncryptionModes.DatagramEncyptionGCMWithRandomInitialNumbers:
Assert.That(ed.EncryptionSecret, Is.Not.Null);
Assert.That(ed.EncryptionSecret.Length, Is.EqualTo(32));
Assert.That(ed.AuthSecret, Is.Null);
break;
default:
throw new ArgumentOutOfRangeException(nameof(encryptionMode), encryptionMode, null);
}
}
public static string Encrypt(this string plainText, EncryptionModes encryptionModes = EncryptionModes.ConstantSaltNoneUserSession)
{
return(plainText._Encrypt(encryptionModes));
}
