/// <summary>
/// Binds (and decrypts) an encrypted field to a string
/// </summary>
/// <param name="controllerContext">The controller context.</param>
/// <param name="bindingContext">The binding context.</param>
/// <returns>The decrypted string</returns>
public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
if (bindingContext.ModelType != typeof(string))
{
throw new InvalidOperationException("You cannot bind an object that is not a string with the CryptoBinder");
}
ValueProviderResult valueProviderResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
if (valueProviderResult == null)
{
return(null);
}
string encryptedString = valueProviderResult.AttemptedValue;
using (ICrypto crypto = new AesCrypto())
{
return(crypto.DecryptToString(encryptedString));
}
}