public void LoadXml(XmlElement value) { if (value == null) { throw new ArgumentNullException("value"); } XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl); XmlNode cipherValueNode = value.SelectSingleNode("enc:CipherValue", nsm); XmlNode cipherReferenceNode = value.SelectSingleNode("enc:CipherReference", nsm); if (cipherValueNode != null) { if (cipherReferenceNode != null) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_CipherValueElementRequired")); } m_cipherValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(cipherValueNode.InnerText)); } else if (cipherReferenceNode != null) { m_cipherReference = new CipherReference(); m_cipherReference.LoadXml((XmlElement)cipherReferenceNode); } else { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_CipherValueElementRequired")); } // Save away the cached value m_cachedXml = value; }
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; _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 _cachedXml = value; }
public override void LoadXml(XmlElement element) { if (element == null) { throw new ArgumentNullException(nameof(element)); } XmlNamespaceManager nsm = new XmlNamespaceManager(element.OwnerDocument.NameTable); nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl); XmlNodeList x509IssuerSerialNodes = element.SelectNodes("ds:X509IssuerSerial", nsm); XmlNodeList x509SKINodes = element.SelectNodes("ds:X509SKI", nsm); XmlNodeList x509SubjectNameNodes = element.SelectNodes("ds:X509SubjectName", nsm); XmlNodeList x509CertificateNodes = element.SelectNodes("ds:X509Certificate", nsm); XmlNodeList x509CRLNodes = element.SelectNodes("ds:X509CRL", nsm); if ((x509CRLNodes.Count == 0 && x509IssuerSerialNodes.Count == 0 && x509SKINodes.Count == 0 && x509SubjectNameNodes.Count == 0 && x509CertificateNodes.Count == 0)) // Bad X509Data tag, or Empty tag { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "X509Data"); } // Flush anything in the lists Clear(); if (x509CRLNodes.Count != 0) { _CRL = Convert.FromBase64String(Utils.DiscardWhiteSpaces(x509CRLNodes.Item(0).InnerText)); } foreach (XmlNode issuerSerialNode in x509IssuerSerialNodes) { XmlNode x509IssuerNameNode = issuerSerialNode.SelectSingleNode("ds:X509IssuerName", nsm); XmlNode x509SerialNumberNode = issuerSerialNode.SelectSingleNode("ds:X509SerialNumber", nsm); if (x509IssuerNameNode == null || x509SerialNumberNode == null) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "IssuerSerial"); } InternalAddIssuerSerial(x509IssuerNameNode.InnerText.Trim(), x509SerialNumberNode.InnerText.Trim()); } foreach (XmlNode node in x509SKINodes) { AddSubjectKeyId(Convert.FromBase64String(Utils.DiscardWhiteSpaces(node.InnerText))); } foreach (XmlNode node in x509SubjectNameNodes) { AddSubjectName(node.InnerText.Trim()); } foreach (XmlNode node in x509CertificateNodes) { AddCertificate(new X509Certificate2(Convert.FromBase64String(Utils.DiscardWhiteSpaces(node.InnerText)))); } }
internal static byte[] DecodeHexString(string s) { string hexString = Utils.DiscardWhiteSpaces(s); uint cbHex = (uint)hexString.Length / 2; byte[] hex = new byte[cbHex]; int i = 0; for (int index = 0; index < cbHex; index++) { hex[index] = (byte)((HexToByte(hexString[i]) << 4) | HexToByte(hexString[i + 1])); i += 2; } return(hex); }
public void LoadXml(XmlElement value) { if (value == null) { throw new ArgumentNullException("value"); } XmlNamespaceManager nsmgr = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsmgr.AddNamespace("enc", "http://www.w3.org/2001/04/xmlenc#"); XmlElement element = value; this.m_algorithm = Utils.GetAttribute(element, "Algorithm", "http://www.w3.org/2001/04/xmlenc#"); XmlNode node = value.SelectSingleNode("enc:KeySize", nsmgr); if (node != null) { this.KeySize = Convert.ToInt32(Utils.DiscardWhiteSpaces(node.InnerText), (IFormatProvider)null); } this.m_cachedXml = value; }
public void LoadXml(XmlElement value) { if (value == null) { throw new ArgumentNullException(nameof(value)); } _id = Utils.GetAttribute(value, "Id", SignedXml.XmlDsigNamespaceUrl); _uri = Utils.GetAttribute(value, "URI", SignedXml.XmlDsigNamespaceUrl); _type = Utils.GetAttribute(value, "Type", SignedXml.XmlDsigNamespaceUrl); if (!Utils.VerifyAttributes(value, new string[] { "Id", "URI", "Type" })) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference"); } XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl); // Transforms bool hasTransforms = false; TransformChain = new TransformChain(); XmlNodeList transformsNodes = value.SelectNodes("ds:Transforms", nsm); if (transformsNodes != null && transformsNodes.Count != 0) { if (transformsNodes.Count > 1) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms"); } hasTransforms = true; XmlElement transformsElement = transformsNodes[0] as XmlElement; if (!Utils.VerifyAttributes(transformsElement, (string[])null)) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms"); } XmlNodeList transformNodes = transformsElement.SelectNodes("ds:Transform", nsm); if (transformNodes != null) { if (transformNodes.Count != transformsElement.SelectNodes("*").Count) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms"); } if (transformNodes.Count > Utils.MaxTransformsPerReference) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms"); } foreach (XmlNode transformNode in transformNodes) { XmlElement transformElement = transformNode as XmlElement; string algorithm = Utils.GetAttribute(transformElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl); if (algorithm == null || !Utils.VerifyAttributes(transformElement, "Algorithm")) { throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform); } Transform transform = CryptoHelpers.CreateFromName <Transform>(algorithm); if (transform == null) { throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform); } AddTransform(transform); // let the transform read the children of the transformElement for data transform.LoadInnerXml(transformElement.ChildNodes); // Hack! this is done to get around the lack of here() function support in XPath if (transform is XmlDsigEnvelopedSignatureTransform) { // Walk back to the Signature tag. Find the nearest signature ancestor // Signature-->SignedInfo-->Reference-->Transforms-->Transform XmlNode signatureTag = transformElement.SelectSingleNode("ancestor::ds:Signature[1]", nsm); XmlNodeList signatureList = transformElement.SelectNodes("//ds:Signature", nsm); if (signatureList != null) { int position = 0; foreach (XmlNode node in signatureList) { position++; if (node == signatureTag) { ((XmlDsigEnvelopedSignatureTransform)transform).SignaturePosition = position; break; } } } } } } } // DigestMethod XmlNodeList digestMethodNodes = value.SelectNodes("ds:DigestMethod", nsm); if (digestMethodNodes == null || digestMethodNodes.Count == 0 || digestMethodNodes.Count > 1) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestMethod"); } XmlElement digestMethodElement = digestMethodNodes[0] as XmlElement; _digestMethod = Utils.GetAttribute(digestMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl); if (_digestMethod == null || !Utils.VerifyAttributes(digestMethodElement, "Algorithm")) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestMethod"); } // DigestValue XmlNodeList digestValueNodes = value.SelectNodes("ds:DigestValue", nsm); if (digestValueNodes == null || digestValueNodes.Count == 0 || digestValueNodes.Count > 1) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestValue"); } XmlElement digestValueElement = digestValueNodes[0] as XmlElement; _digestValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(digestValueElement.InnerText)); if (!Utils.VerifyAttributes(digestValueElement, (string[])null)) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestValue"); } // Verify that there aren't any extra nodes that aren't allowed int expectedChildNodeCount = hasTransforms ? 3 : 2; if (value.SelectNodes("*").Count != expectedChildNodeCount) { throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference"); } // cache the Xml _cachedXml = value; }
public void LoadXml(XmlElement value) { // Make sure we don't get passed null if (value == null) { throw new ArgumentNullException("value"); } // Signature XmlElement signatureElement = value; if (!signatureElement.LocalName.Equals("Signature")) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature"); } // Id attribute -- optional m_id = Utils.GetAttribute(signatureElement, "Id", SignedXml.XmlDsigNamespaceUrl); XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl); // SignedInfo XmlElement signedInfoElement = signatureElement.SelectSingleNode("ds:SignedInfo", nsm) as XmlElement; if (signedInfoElement == null) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo"); } this.SignedInfo = new SignedInfo(); this.SignedInfo.LoadXml(signedInfoElement); // SignatureValue XmlElement signatureValueElement = signatureElement.SelectSingleNode("ds:SignatureValue", nsm) as XmlElement; if (signatureValueElement == null) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo/SignatureValue"); } m_signatureValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(signatureValueElement.InnerText)); m_signatureValueId = Utils.GetAttribute(signatureValueElement, "Id", SignedXml.XmlDsigNamespaceUrl); XmlNodeList keyInfoNodes = signatureElement.SelectNodes("ds:KeyInfo", nsm); m_keyInfo = new KeyInfo(); if (keyInfoNodes != null) { foreach (XmlNode node in keyInfoNodes) { XmlElement keyInfoElement = node as XmlElement; if (keyInfoElement != null) { m_keyInfo.LoadXml(keyInfoElement); } } } XmlNodeList objectNodes = signatureElement.SelectNodes("ds:Object", nsm); m_embeddedObjects.Clear(); if (objectNodes != null) { foreach (XmlNode node in objectNodes) { XmlElement objectElement = node as XmlElement; if (objectElement != null) { DataObject dataObj = new DataObject(); dataObj.LoadXml(objectElement); m_embeddedObjects.Add(dataObj); } } } // Select all elements that have Id attributes XmlNodeList nodeList = signatureElement.SelectNodes("//*[@Id]", nsm); if (nodeList != null) { foreach (XmlNode node in nodeList) { m_referencedItems.Add(node); } } }
public void LoadXml(XmlElement value) { if (value == null) { throw new ArgumentNullException("value"); } m_id = Utils.GetAttribute(value, "Id", SignedXml.XmlDsigNamespaceUrl); m_uri = Utils.GetAttribute(value, "URI", SignedXml.XmlDsigNamespaceUrl); m_type = Utils.GetAttribute(value, "Type", SignedXml.XmlDsigNamespaceUrl); XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl); // Transforms this.TransformChain = new TransformChain(); XmlElement transformsElement = value.SelectSingleNode("ds:Transforms", nsm) as XmlElement; if (transformsElement != null) { XmlNodeList transformNodes = transformsElement.SelectNodes("ds:Transform", nsm); if (transformNodes != null) { foreach (XmlNode transformNode in transformNodes) { XmlElement transformElement = transformNode as XmlElement; string algorithm = Utils.GetAttribute(transformElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl); Transform transform = CryptoConfig.CreateFromName(algorithm) as Transform; if (transform == null) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UnknownTransform")); } AddTransform(transform); // let the transform read the children of the transformElement for data transform.LoadInnerXml(transformElement.ChildNodes); // Hack! this is done to get around the lack of here() function support in XPath if (transform is XmlDsigEnvelopedSignatureTransform) { // Walk back to the Signature tag. Find the nearest signature ancestor // Signature-->SignedInfo-->Reference-->Transforms-->Transform XmlNode signatureTag = transformElement.SelectSingleNode("ancestor::ds:Signature[1]", nsm); XmlNodeList signatureList = transformElement.SelectNodes("//ds:Signature", nsm); if (signatureList != null) { int position = 0; foreach (XmlNode node in signatureList) { position++; if (node == signatureTag) { ((XmlDsigEnvelopedSignatureTransform)transform).SignaturePosition = position; break; } } } } } } } // DigestMethod XmlElement digestMethodElement = value.SelectSingleNode("ds:DigestMethod", nsm) as XmlElement; if (digestMethodElement == null) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Reference/DigestMethod"); } m_digestMethod = Utils.GetAttribute(digestMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl); // DigestValue XmlElement digestValueElement = value.SelectSingleNode("ds:DigestValue", nsm) as XmlElement; if (digestValueElement == null) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Reference/DigestValue"); } m_digestValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(digestValueElement.InnerText)); // cache the Xml m_cachedXml = value; }
public void LoadXml(XmlElement value) { // Make sure we don't get passed null if (value == null) { throw new ArgumentNullException("value"); } // Signature XmlElement signatureElement = value; if (!signatureElement.LocalName.Equals("Signature")) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature"); } // Attributes m_id = Utils.GetAttribute(signatureElement, "Id", SignedXml.XmlDsigNamespaceUrl); if (!Utils.VerifyAttributes(signatureElement, "Id")) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature"); } XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable); nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl); int expectedChildNodes = 0; // SignedInfo XmlNodeList signedInfoNodes = signatureElement.SelectNodes("ds:SignedInfo", nsm); if (signedInfoNodes == null || signedInfoNodes.Count == 0 || (!Utils.GetAllowAdditionalSignatureNodes() && signedInfoNodes.Count > 1)) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo"); } XmlElement signedInfoElement = signedInfoNodes[0] as XmlElement; expectedChildNodes += signedInfoNodes.Count; this.SignedInfo = new SignedInfo(); this.SignedInfo.LoadXml(signedInfoElement); // SignatureValue XmlNodeList signatureValueNodes = signatureElement.SelectNodes("ds:SignatureValue", nsm); if (signatureValueNodes == null || signatureValueNodes.Count == 0 || (!Utils.GetAllowAdditionalSignatureNodes() && signatureValueNodes.Count > 1)) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignatureValue"); } XmlElement signatureValueElement = signatureValueNodes[0] as XmlElement; expectedChildNodes += signatureValueNodes.Count; m_signatureValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(signatureValueElement.InnerText)); m_signatureValueId = Utils.GetAttribute(signatureValueElement, "Id", SignedXml.XmlDsigNamespaceUrl); if (!Utils.VerifyAttributes(signatureValueElement, "Id")) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignatureValue"); } // KeyInfo - optional single element XmlNodeList keyInfoNodes = signatureElement.SelectNodes("ds:KeyInfo", nsm); m_keyInfo = new KeyInfo(); if (keyInfoNodes != null) { if (!Utils.GetAllowAdditionalSignatureNodes() && keyInfoNodes.Count > 1) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "KeyInfo"); } foreach (XmlNode node in keyInfoNodes) { XmlElement keyInfoElement = node as XmlElement; if (keyInfoElement != null) { m_keyInfo.LoadXml(keyInfoElement); } } expectedChildNodes += keyInfoNodes.Count; } // Object - zero or more elements allowed XmlNodeList objectNodes = signatureElement.SelectNodes("ds:Object", nsm); m_embeddedObjects.Clear(); if (objectNodes != null) { foreach (XmlNode node in objectNodes) { XmlElement objectElement = node as XmlElement; if (objectElement != null) { DataObject dataObj = new DataObject(); dataObj.LoadXml(objectElement); m_embeddedObjects.Add(dataObj); } } expectedChildNodes += objectNodes.Count; } // Select all elements that have Id attributes XmlNodeList nodeList = signatureElement.SelectNodes("//*[@Id]", nsm); if (nodeList != null) { foreach (XmlNode node in nodeList) { m_referencedItems.Add(node); } } // Verify that there aren't any extra nodes that aren't allowed if (!Utils.GetAllowAdditionalSignatureNodes() && (signatureElement.SelectNodes("*").Count != expectedChildNodes)) { throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature"); } }