internal static IAuthenticationMethod DeriveAuthenticationMethod(IAuthenticationMethod currentAuthenticationMethod, AuthenticationResult deviceCredentials)
{
string deviceId = deviceCredentials.DeviceId;
switch (deviceCredentials.Scope)
{
case AuthenticationScope.None:
var policyKeyAuth = currentAuthenticationMethod as DeviceAuthenticationWithSharedAccessPolicyKey;
if (policyKeyAuth != null)
{
return new DeviceAuthenticationWithSharedAccessPolicyKey(deviceId, policyKeyAuth.PolicyName, policyKeyAuth.Key);
}
var deviceKeyAuth = currentAuthenticationMethod as DeviceAuthenticationWithRegistrySymmetricKey;
if (deviceKeyAuth != null)
{
return new DeviceAuthenticationWithRegistrySymmetricKey(deviceId, deviceKeyAuth.DeviceId);
}
var deviceTokenAuth = currentAuthenticationMethod as DeviceAuthenticationWithToken;
if (deviceTokenAuth != null)
{
return new DeviceAuthenticationWithToken(deviceId, deviceTokenAuth.Token);
}
throw new InvalidOperationException("");
case AuthenticationScope.SasToken:
return new DeviceAuthenticationWithToken(deviceId, deviceCredentials.Secret);
case AuthenticationScope.DeviceKey:
return new DeviceAuthenticationWithRegistrySymmetricKey(deviceId, deviceCredentials.Secret);
case AuthenticationScope.HubKey:
return new DeviceAuthenticationWithSharedAccessPolicyKey(deviceId, deviceCredentials.PolicyName, deviceCredentials.Secret);
default:
throw new InvalidOperationException("Unexpected AuthenticationScope value: " + deviceCredentials.Scope);
}
}
