static void Main(string[] args) { // Create a new CipherData object. CipherData cd = new CipherData(); // Assign a byte array to be the CipherValue. This is a byte array representing encrypted data. cd.CipherValue = new byte[8]; // Create a new EncryptedData object. EncryptedData ed = new EncryptedData(); //Add an encryption method to the object. ed.Id = "ED"; ed.EncryptionMethod = new EncryptionMethod("http://www.w3.org/2001/04/xmlenc#aes128-cbc"); ed.CipherData = cd; //Add key information to the object. KeyInfo ki = new KeyInfo(); ki.AddClause(new KeyInfoRetrievalMethod("#EK", "http://www.w3.org/2001/04/xmlenc#EncryptedKey")); ed.KeyInfo = ki; // Create new XML document and put encrypted data into it. XmlDocument doc = new XmlDocument(); XmlElement encryptionPropertyElement = (XmlElement)doc.CreateElement("EncryptionProperty", EncryptedXml.XmlEncNamespaceUrl); EncryptionProperty ep = new EncryptionProperty(encryptionPropertyElement); ed.AddProperty(ep); // Output the resulting XML information into a file. string path = @"c:\test\MyTest.xml"; File.WriteAllText(path, ed.GetXml().OuterXml); //Console.WriteLine(ed.GetXml().OuterXml); }
static void Main(string[] args) { //Create a URI string. String uri = "http://www.woodgrovebank.com/document.xml"; // Create a Base64 transform. The input content retrieved from the // URI should be Base64-decoded before other processing. Transform base64 = new XmlDsigBase64Transform(); //Create a transform chain and add the transform to it. TransformChain tc = new TransformChain(); tc.Add(base64); //Create <CipherReference> information. CipherReference reference = new CipherReference(uri, tc); // Create a new CipherData object using the CipherReference information. // Note that you cannot assign both a CipherReference and a CipherValue // to a CipherData object. CipherData cd = new CipherData(reference); // Create a new EncryptedData object. EncryptedData ed = new EncryptedData(); //Add an encryption method to the object. ed.Id = "ED"; ed.EncryptionMethod = new EncryptionMethod("http://www.w3.org/2001/04/xmlenc#aes128-cbc"); ed.CipherData = cd; //Add key information to the object. KeyInfo ki = new KeyInfo(); ki.AddClause(new KeyInfoRetrievalMethod("#EK", "http://www.w3.org/2001/04/xmlenc#EncryptedKey")); ed.KeyInfo = ki; // Create new XML document and put encrypted data into it. XmlDocument doc = new XmlDocument(); XmlElement encryptionPropertyElement = (XmlElement)doc.CreateElement("EncryptionProperty", EncryptedXml.XmlEncNamespaceUrl); EncryptionProperty ep = new EncryptionProperty(encryptionPropertyElement); ed.AddProperty(ep); // Output the resulting XML information into a file. try { string path = @"c:\test\MyTest.xml"; File.WriteAllText(path, ed.GetXml().OuterXml); } catch (IOException e) { Console.WriteLine("File IO error. {0}", e); } }
static void Main(string[] args) { //<SNIPPET3> //<SNIPPET1> // Create a new CipherData object using a byte array to represent encrypted data. Byte[] sampledata = new byte[8]; CipherData cd = new CipherData(sampledata); //</SNIPPET1> // Create a new EncryptedData object. EncryptedData ed = new EncryptedData(); //Add an encryption method to the object. ed.Id = "ED"; ed.EncryptionMethod = new EncryptionMethod("http://www.w3.org/2001/04/xmlenc#aes128-cbc"); ed.CipherData = cd; //</SNIPPET3> //<SNIPPET2> //Add key information to the object. KeyInfo ki = new KeyInfo(); ki.AddClause(new KeyInfoRetrievalMethod("#EK", "http://www.w3.org/2001/04/xmlenc#EncryptedKey")); ed.KeyInfo = ki; //</SNIPPET2> // Create new XML document and put encrypted data into it. XmlDocument doc = new XmlDocument(); XmlElement encryptionPropertyElement = (XmlElement)doc.CreateElement("EncryptionProperty", EncryptedXml.XmlEncNamespaceUrl); EncryptionProperty ep = new EncryptionProperty(encryptionPropertyElement); ed.AddProperty(ep); // Output the resulting XML information into a file. Change the path variable to point to a directory where // the XML file should be written. string path = @"c:\test\MyTest.xml"; File.WriteAllText(path, ed.GetXml().OuterXml); }
public static void Encrypt(XmlDocument Doc, string ElementToEncrypt, RSA Alg, string KeyName) { // Check the arguments. if (Doc == null) { throw new ArgumentNullException("Doc"); } if (ElementToEncrypt == null) { throw new ArgumentNullException("ElementToEncrypt"); } if (Alg == null) { throw new ArgumentNullException("Alg"); } //////////////////////////////////////////////// // Find the specified element in the XmlDocument // object and create a new XmlElemnt object. //////////////////////////////////////////////// XmlElement elementToEncrypt = Doc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement; // Throw an XmlException if the element was not found. if (elementToEncrypt == null) { throw new XmlException("The specified element was not found"); } ////////////////////////////////////////////////// // Create a new instance of the EncryptedXml class // and use it to encrypt the XmlElement with the // a new random symmetric key. ////////////////////////////////////////////////// // Create a 256 bit Rijndael key. RijndaelManaged sessionKey = new RijndaelManaged(); sessionKey.KeySize = 256; EncryptedXml eXml = new EncryptedXml(); byte[] encryptedElement = eXml.EncryptData(elementToEncrypt, sessionKey, false); //////////////////////////////////////////////// // Construct an EncryptedData object and populate // it with the desired encryption information. //////////////////////////////////////////////// EncryptedData edElement = new EncryptedData(); edElement.Type = EncryptedXml.XmlEncElementUrl; // Create an EncryptionMethod element so that the // receiver knows which algorithm to use for decryption. edElement.EncryptionMethod = new EncryptionMethod(EncryptedXml.XmlEncAES256Url); // Encrypt the session key and add it to an EncryptedKey element. EncryptedKey ek = new EncryptedKey(); byte[] encryptedKey = EncryptedXml.EncryptKey(sessionKey.Key, Alg, false); ek.CipherData = new CipherData(encryptedKey); ek.EncryptionMethod = new EncryptionMethod(EncryptedXml.XmlEncRSA15Url); // Save some more information about the key using // the EncryptionProperty element. In this example, // we will save the value "LibVersion1". You can save // anything you want here. // Create a new "EncryptionProperty" XmlElement object. XmlElement element = new XmlDocument().CreateElement("EncryptionProperty", EncryptedXml.XmlEncNamespaceUrl); // Set the value of the EncryptionProperty" XmlElement object. element.InnerText = "LibVersion1"; // Create the EncryptionProperty object using the XmlElement object. EncryptionProperty encProp = new EncryptionProperty(element); // Add the EncryptionProperty object to the EncryptedData object. edElement.AddProperty(encProp); // Set the KeyInfo element to specify the // name of the RSA key. // Create a new KeyInfo element. edElement.KeyInfo = new KeyInfo(); // Create a new KeyInfoName element. KeyInfoName kin = new KeyInfoName(); // Specify a name for the key. kin.Value = KeyName; // Add the KeyInfoName element to the // EncryptedKey object. ek.KeyInfo.AddClause(kin); // Add the encrypted key to the // EncryptedData object. edElement.KeyInfo.AddClause(new KeyInfoEncryptedKey(ek)); // Add the encrypted element data to the // EncryptedData object. edElement.CipherData.CipherValue = encryptedElement; //////////////////////////////////////////////////// // Replace the element from the original XmlDocument // object with the EncryptedData element. //////////////////////////////////////////////////// EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false); }