/// <summary>
/// Creates a security token easily adopted into various services in the format of the <see cref="SecurityToken.ToString()"/> method.
/// The token itself is encrypted using the <see cref="AdvancedEncryptionStandardUtility.Encrypt"/> method.
/// </summary>
/// <param name="token">The <see cref="SecurityToken"/> to convert and encrypt to a byte[] representation.</param>
/// <param name="securityKey">The key to use in the encryption algorithm.</param>
/// <param name="securityInitializationVector">The initialization vector (IV) to use in the encryption algorithm.</param>
/// <returns>A security token easily adopted into various services in the format of the <see cref="SecurityToken.ToString()"/> method.</returns>
public static byte[] CreateEncryptedSecurityToken(SecurityToken token, byte[] securityKey, byte[] securityInitializationVector)
{
if (token == null)
{
throw new ArgumentNullException(nameof(token));
}
byte[] securityToken = AdvancedEncryptionStandardUtility.Encrypt(ByteConverter.FromString(token.ToString(), options =>
{
options.Encoding = Encoding.UTF8;
options.Preamble = PreambleSequence.Remove;
}), securityKey, securityInitializationVector);
return(securityToken);
}
/// <summary>
/// Creates and returns a mappable XML document of the original values and the obfuscated values.
/// </summary>
/// <returns>A mappable XML document of the original values and the obfuscated values.</returns>
public override Stream CreateMapping()
{
MemoryStream output;
MemoryStream tempOutput = null;
try
{
XmlDocument document = XmlDocumentConverter.FromStream(base.CreateMapping());
XmlNode mappingNode = document.DocumentElement;
string innerXmlOfMappingNode = mappingNode.InnerXml;
byte[] innerXmlOfMappingNodeBytes = ByteConverter.FromString(innerXmlOfMappingNode, options =>
{
options.Encoding = Encoding;
options.Preamble = PreambleSequence.Remove;
});
XmlElement encryptedNode = document.CreateElement(MappingEncryptedElement);
encryptedNode.InnerText = Convert.ToBase64String(AdvancedEncryptionStandardUtility.Encrypt(innerXmlOfMappingNodeBytes, Key, InitializationVector));
mappingNode.InnerXml = "";
mappingNode.AppendChild(encryptedNode);
tempOutput = new MemoryStream();
using (XmlWriter writer = XmlWriter.Create(tempOutput, XmlWriterUtility.CreateSettings(o => o.Encoding = Encoding)))
{
document.WriteTo(writer);
}
tempOutput.Position = 0;
output = tempOutput;
tempOutput = null;
}
finally
{
if (tempOutput != null)
{
tempOutput.Dispose();
}
}
return(output);
}