private void DecryptEncryptedGrants(XmlNodeList encryptedGrantList, IRelDecryptor decryptor) { XmlElement encryptionMethod = null; XmlElement keyInfo = null; XmlElement cipherData = null; EncryptionMethod encryptionMethodObj = null; KeyInfo keyInfoObj = null; CipherData cipherDataObj = null; for (int i = 0, count = encryptedGrantList.Count; i < count; i++) { encryptionMethod = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/enc:EncryptionMethod", _namespaceManager) as XmlElement; keyInfo = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/dsig:KeyInfo", _namespaceManager) as XmlElement; cipherData = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/enc:CipherData", _namespaceManager) as XmlElement; if ((encryptionMethod != null) && (keyInfo != null) && (cipherData != null)) { encryptionMethodObj = new EncryptionMethod(); keyInfoObj = new KeyInfo(); cipherDataObj = new CipherData(); encryptionMethodObj.LoadXml(encryptionMethod); keyInfoObj.LoadXml(keyInfo); cipherDataObj.LoadXml(cipherData); MemoryStream toDecrypt = null; Stream decryptedContent = null; StreamReader streamReader = null; try { toDecrypt = new MemoryStream(cipherDataObj.CipherValue); decryptedContent = _relDecryptor.Decrypt(encryptionMethodObj, keyInfoObj, toDecrypt); if ((decryptedContent == null) || (decryptedContent.Length == 0)) { throw new System.Security.Cryptography.CryptographicException(SR.Cryptography_Xml_XrmlUnableToDecryptGrant); } streamReader = new StreamReader(decryptedContent); string clearContent = streamReader.ReadToEnd(); encryptedGrantList[i].ParentNode.InnerXml = clearContent; } finally { if (toDecrypt != null) { toDecrypt.Close(); } if (decryptedContent != null) { decryptedContent.Close(); } if (streamReader != null) { streamReader.Close(); } } encryptionMethodObj = null; keyInfoObj = null; cipherDataObj = null; } encryptionMethod = null; keyInfo = null; cipherData = null; } }
public override void LoadXml(XmlElement value) { if (value == null) { throw new ArgumentNullException(nameof(value)); } XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("enc", XmlNameSpace.Url[NS.XmlEncNamespaceUrl]); nsm.AddNamespace("ds", XmlNameSpace.Url[NS.XmlDsigNamespaceUrl]); Id = ElementUtils.GetAttribute(value, "Id", NS.XmlEncNamespaceUrl); Type = ElementUtils.GetAttribute(value, "Type", NS.XmlEncNamespaceUrl); MimeType = ElementUtils.GetAttribute(value, "MimeType", NS.XmlEncNamespaceUrl); Encoding = ElementUtils.GetAttribute(value, "Encoding", NS.XmlEncNamespaceUrl); Recipient = ElementUtils.GetAttribute(value, "Recipient", NS.XmlEncNamespaceUrl); XmlNode encryptionMethodNode = value.SelectSingleNode("enc:EncryptionMethod", nsm); EncryptionMethod = new EncryptionMethod(); if (encryptionMethodNode != null) { EncryptionMethod.LoadXml(encryptionMethodNode as XmlElement); } KeyInfo = new KeyInfo(); XmlNode keyInfoNode = value.SelectSingleNode("ds:KeyInfo", nsm); if (keyInfoNode != null) { KeyInfo.LoadXml(keyInfoNode as XmlElement); } XmlNode cipherDataNode = value.SelectSingleNode("enc:CipherData", nsm); if (cipherDataNode == null) { throw new System.Security.Cryptography.CryptographicException(SR.Cryptography_Xml_MissingCipherData); } CipherData = new CipherData(); CipherData.LoadXml(cipherDataNode as XmlElement); XmlNode encryptionPropertiesNode = value.SelectSingleNode("enc:EncryptionProperties", nsm); if (encryptionPropertiesNode != null) { XmlNodeList encryptionPropertyNodes = encryptionPropertiesNode.SelectNodes("enc:EncryptionProperty", nsm); if (encryptionPropertyNodes != null) { foreach (XmlNode node in encryptionPropertyNodes) { EncryptionProperty ep = new EncryptionProperty(); ep.LoadXml(node as XmlElement); EncryptionProperties.Add(ep); } } } XmlNode carriedKeyNameNode = value.SelectSingleNode("enc:CarriedKeyName", nsm); if (carriedKeyNameNode != null) { CarriedKeyName = carriedKeyNameNode.InnerText; } XmlNode referenceListNode = value.SelectSingleNode("enc:ReferenceList", nsm); if (referenceListNode != null) { XmlNodeList dataReferenceNodes = referenceListNode.SelectNodes("enc:DataReference", nsm); if (dataReferenceNodes != null) { foreach (XmlNode node in dataReferenceNodes) { DataReference dr = new DataReference(); dr.LoadXml(node as XmlElement); ReferenceList.Add(dr); } } XmlNodeList keyReferenceNodes = referenceListNode.SelectNodes("enc:KeyReference", nsm); if (keyReferenceNodes != null) { foreach (XmlNode node in keyReferenceNodes) { KeyReference kr = new KeyReference(); kr.LoadXml(node as XmlElement); ReferenceList.Add(kr); } } } _cachedXml = value; }
public override void LoadXml(XmlElement value) { if (value == null) { throw new ArgumentNullException(nameof(value)); } XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl); nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl); Id = Utils.GetAttribute(value, "Id", EncryptedXml.XmlEncNamespaceUrl); Type = Utils.GetAttribute(value, "Type", EncryptedXml.XmlEncNamespaceUrl); MimeType = Utils.GetAttribute(value, "MimeType", EncryptedXml.XmlEncNamespaceUrl); Encoding = Utils.GetAttribute(value, "Encoding", EncryptedXml.XmlEncNamespaceUrl); XmlNode encryptionMethodNode = value.SelectSingleNode("enc:EncryptionMethod", nsm); // EncryptionMethod EncryptionMethod = new EncryptionMethod(); if (encryptionMethodNode != null) { EncryptionMethod.LoadXml(encryptionMethodNode as XmlElement); } // Key Info KeyInfo = new KeyInfo(); XmlNode keyInfoNode = value.SelectSingleNode("ds:KeyInfo", nsm); if (keyInfoNode != null) { KeyInfo.LoadXml(keyInfoNode as XmlElement); } // CipherData XmlNode cipherDataNode = value.SelectSingleNode("enc:CipherData", nsm); if (cipherDataNode == null) { throw new System.Security.Cryptography.CryptographicException(SR.Cryptography_Xml_MissingCipherData); } CipherData = new CipherData(); CipherData.LoadXml(cipherDataNode as XmlElement); // EncryptionProperties XmlNode encryptionPropertiesNode = value.SelectSingleNode("enc:EncryptionProperties", nsm); if (encryptionPropertiesNode != null) { // Select the EncryptionProperty elements inside the EncryptionProperties element XmlNodeList encryptionPropertyNodes = encryptionPropertiesNode.SelectNodes("enc:EncryptionProperty", nsm); if (encryptionPropertyNodes != null) { foreach (XmlNode node in encryptionPropertyNodes) { EncryptionProperty ep = new EncryptionProperty(); ep.LoadXml(node as XmlElement); EncryptionProperties.Add(ep); } } } // Save away the cached value _cachedXml = value; }