Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / ManagedLibraries / Security / System / Security / Cryptography / Xml / EncryptedType.cs / 1305376 / EncryptedType.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //[....] // // // EncryptedType.cs // // This object implements the abstract type from which EncryptedData and EncrytpedKey derive. // // 04/01/2002 // namespace System.Security.Cryptography.Xml { using System; using System.Collections; using System.Xml; [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public abstract class EncryptedType { private string m_id; private string m_type; private string m_mimeType; private string m_encoding; private EncryptionMethod m_encryptionMethod; private CipherData m_cipherData; private EncryptionPropertyCollection m_props; private KeyInfo m_keyInfo; internal XmlElement m_cachedXml = null; internal bool CacheValid { get { return (m_cachedXml != null); } } public virtual string Id { get { return m_id; } set { m_id = value; m_cachedXml = null; } } public virtual string Type { get { return m_type; } set { m_type = value; m_cachedXml = null; } } public virtual string MimeType { get { return m_mimeType; } set { m_mimeType = value; m_cachedXml = null; } } public virtual string Encoding { get { return m_encoding; } set { m_encoding = value; m_cachedXml = null; } } public KeyInfo KeyInfo { get { if (m_keyInfo == null) m_keyInfo = new KeyInfo(); return m_keyInfo; } set { m_keyInfo = value; } } public virtual EncryptionMethod EncryptionMethod { get { return m_encryptionMethod; } set { m_encryptionMethod = value; m_cachedXml = null; } } public virtual EncryptionPropertyCollection EncryptionProperties { get { if (m_props == null) m_props = new EncryptionPropertyCollection(); return m_props; } } public void AddProperty(EncryptionProperty ep) { this.EncryptionProperties.Add(ep); } public virtual CipherData CipherData { get { if (m_cipherData == null) m_cipherData = new CipherData(); return m_cipherData; } set { if (value == null) throw new ArgumentNullException("value"); m_cipherData = value; m_cachedXml = null; } } public abstract void LoadXml (XmlElement value); public abstract XmlElement GetXml(); } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public class EncryptionMethod { private XmlElement m_cachedXml = null; private int m_keySize = 0; private string m_algorithm; public EncryptionMethod () { m_cachedXml = null; } public EncryptionMethod (string algorithm) { m_algorithm = algorithm; m_cachedXml = null; } private bool CacheValid { get { return (m_cachedXml != null); } } public int KeySize { get { return m_keySize; } set { if (value <= 0) throw new ArgumentOutOfRangeException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidKeySize")); m_keySize = value; m_cachedXml = null; } } public string KeyAlgorithm { get { return m_algorithm; } set { m_algorithm = value; m_cachedXml = null; } } public XmlElement GetXml() { if (CacheValid) return(m_cachedXml); XmlDocument document = new XmlDocument(); document.PreserveWhitespace = true; return GetXml(document); } internal XmlElement GetXml (XmlDocument document) { // Create the EncryptionMethod element XmlElement encryptionMethodElement = (XmlElement) document.CreateElement("EncryptionMethod", EncryptedXml.XmlEncNamespaceUrl); if (!String.IsNullOrEmpty(m_algorithm)) encryptionMethodElement.SetAttribute("Algorithm", m_algorithm); if (m_keySize > 0) { // Construct a KeySize element XmlElement keySizeElement = document.CreateElement("KeySize", EncryptedXml.XmlEncNamespaceUrl); keySizeElement.AppendChild(document.CreateTextNode(m_keySize.ToString(null, null))); encryptionMethodElement.AppendChild(keySizeElement); } return encryptionMethodElement; } public void LoadXml(XmlElement value) { if (value == null) throw new ArgumentNullException("value"); XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl); XmlElement encryptionMethodElement = value; m_algorithm = Utils.GetAttribute(encryptionMethodElement, "Algorithm", EncryptedXml.XmlEncNamespaceUrl); XmlNode keySizeNode = value.SelectSingleNode("enc:KeySize", nsm); if (keySizeNode != null) { KeySize = Convert.ToInt32(Utils.DiscardWhiteSpaces(keySizeNode.InnerText), null); } // Save away the cached value m_cachedXml = value; } } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class EncryptionProperty { private string m_target; private string m_id; private XmlElement m_elemProp; private XmlElement m_cachedXml = null; // We are being lax here as per the spec public EncryptionProperty() {} public EncryptionProperty(XmlElement elementProperty) { if (elementProperty == null) throw new ArgumentNullException("elementProperty"); if (elementProperty.LocalName != "EncryptionProperty" || elementProperty.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidEncryptionProperty")); m_elemProp = elementProperty; m_cachedXml = null; } public string Id { get { return m_id; } } public string Target { get { return m_target; } } public XmlElement PropertyElement { get { return m_elemProp; } set { if (value == null) throw new ArgumentNullException("value"); if (value.LocalName != "EncryptionProperty" || value.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidEncryptionProperty")); m_elemProp = value; m_cachedXml = null; } } private bool CacheValid { get { return (m_cachedXml != null); } } public XmlElement GetXml() { if (CacheValid) return m_cachedXml; XmlDocument document = new XmlDocument(); document.PreserveWhitespace = true; return GetXml(document); } internal XmlElement GetXml (XmlDocument document) { return document.ImportNode(m_elemProp, true) as XmlElement; } public void LoadXml(XmlElement value) { if (value == null) throw new ArgumentNullException("value"); if (value.LocalName != "EncryptionProperty" || value.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidEncryptionProperty")); // cache the Xml m_cachedXml = value; m_id = Utils.GetAttribute(value, "Id", EncryptedXml.XmlEncNamespaceUrl); m_target = Utils.GetAttribute(value, "Target", EncryptedXml.XmlEncNamespaceUrl); m_elemProp = value; } } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class EncryptionPropertyCollection : IList { private ArrayList m_props; public EncryptionPropertyCollection() { m_props = new ArrayList(); } public IEnumerator GetEnumerator() { return m_props.GetEnumerator(); } public int Count { get { return m_props.Count; } } ///int IList.Add(Object value) { if (!(value is EncryptionProperty)) throw new ArgumentException(SecurityResources.GetResourceString("Cryptography_Xml_IncorrectObjectType"), "value"); return m_props.Add(value); } public int Add(EncryptionProperty value) { return m_props.Add(value); } public void Clear() { m_props.Clear(); } /// bool IList.Contains(Object value) { if (!(value is EncryptionProperty)) throw new ArgumentException(SecurityResources.GetResourceString("Cryptography_Xml_IncorrectObjectType"), "value"); return m_props.Contains(value); } public bool Contains(EncryptionProperty value) { return m_props.Contains(value); } /// int IList.IndexOf(Object value) { if (!(value is EncryptionProperty)) throw new ArgumentException(SecurityResources.GetResourceString("Cryptography_Xml_IncorrectObjectType"), "value"); return m_props.IndexOf(value); } public int IndexOf(EncryptionProperty value) { return m_props.IndexOf(value); } /// void IList.Insert(int index, Object value) { if (!(value is EncryptionProperty)) throw new ArgumentException(SecurityResources.GetResourceString("Cryptography_Xml_IncorrectObjectType"), "value"); m_props.Insert(index, value); } public void Insert(int index, EncryptionProperty value) { m_props.Insert(index, value); } /// void IList.Remove(Object value) { if (!(value is EncryptionProperty)) throw new ArgumentException(SecurityResources.GetResourceString("Cryptography_Xml_IncorrectObjectType"), "value"); m_props.Remove(value); } public void Remove(EncryptionProperty value) { m_props.Remove(value); } public void RemoveAt(int index) { m_props.RemoveAt(index); } public Boolean IsFixedSize { get { return m_props.IsFixedSize; } } public Boolean IsReadOnly { get { return m_props.IsReadOnly; } } public EncryptionProperty Item(int index) { return (EncryptionProperty) m_props[index]; } [System.Runtime.CompilerServices.IndexerName ("ItemOf")] public EncryptionProperty this[int index] { get { return (EncryptionProperty) ((IList) this)[index]; } set { ((IList) this)[index] = value; } } /// Object IList.this[int index] { get { return m_props[index]; } set { if (!(value is EncryptionProperty)) throw new ArgumentException(SecurityResources.GetResourceString("Cryptography_Xml_IncorrectObjectType"), "value"); m_props[index] = value; } } /// public void CopyTo(Array array, int index) { m_props.CopyTo(array, index); } public void CopyTo(EncryptionProperty[] array, int index) { m_props.CopyTo(array, index); } public Object SyncRoot { get { return m_props.SyncRoot; } } public bool IsSynchronized { get { return m_props.IsSynchronized; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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