public void Encrypt_X509_XmlNull()
{
var certificate = TestHelpers.GetSampleX509Certificate();
XmlEncryption exml = new XmlEncryption();
Assert.Throws <ArgumentNullException>(() => exml.Encrypt(null, certificate.Item1));
}
public void Encrypt_DecryptDocument_AES()
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
string xml = "<root> <child>sample</child> </root>";
doc.LoadXml(xml);
var aes = CipherUtilities.GetCipher("AES/CBC/ZEROBYTEPADDING");
var random = new SecureRandom();
var ivdata = new byte[128 / 8];
var keydata = new byte[256 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
XmlEncryption exml = new XmlEncryption();
exml.AddKeyNameMapping("aes", param);
EncryptedData ed = exml.Encrypt(doc.DocumentElement, "aes");
doc.LoadXml(ed.GetXml().OuterXml);
XmlDecryption exmlDecryptor = new XmlDecryption(doc);
exmlDecryptor.AddKeyNameMapping("aes", param);
exmlDecryptor.DecryptDocument();
Assert.Equal(xml, doc.OuterXml);
}
public static void Encrypt(Stream toEncrypt, RsaKeyParameters key, out KeyInfo keyInfo, out EncryptionMethod encryptionMethod, out CipherData cipherData)
{
var random = new SecureRandom();
var keyData = new byte[128 / 8];
var ivData = new byte[128 / 8];
random.NextBytes(ivData);
random.NextBytes(keyData);
var sessionKey = new ParametersWithIV(new KeyParameter(keyData), ivData);
encryptionMethod = new EncryptionMethod(NS.XmlEncAES128Url);
keyInfo = new KeyInfo();
EncryptedKey encKey;
keyInfo.AddClause(
new KeyInfoEncryptedKey(
encKey = new EncryptedKey()
{
CipherData = new CipherData(XmlEncryption.EncryptKey(keyData, key, useOAEP: true)),
EncryptionMethod = new EncryptionMethod(NS.XmlEncRSAOAEPUrl)
}));
encKey.KeyInfo.AddClause(new RsaKeyValue(key));
byte[] dataToEncrypt = new byte[toEncrypt.Length];
toEncrypt.Read(dataToEncrypt, 0, (int)toEncrypt.Length);
var encryptedXml = new XmlEncryption();
encryptedXml.SetPadding("PKCS7");
encryptedXml.SetMode("CBC");
byte[] encryptedData = encryptedXml.EncryptData(dataToEncrypt, sessionKey);
cipherData = new CipherData(encryptedData);
}
public void DecryptEncryptedKey_KeyInfoEncryptedKey()
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
string xml = "<root> <child>sample</child> </root>";
doc.LoadXml(xml);
var random = new SecureRandom();
var keydata = new byte[256 / 8];
random.NextBytes(keydata);
var param = new KeyParameter(keydata);
keydata = new byte[128 / 8];
random.NextBytes(keydata);
var innerParam = new KeyParameter(keydata);
keydata = new byte[192 / 8];
random.NextBytes(keydata);
var outerParam = new KeyParameter(keydata);
XmlDecryption exml = new XmlDecryption(doc);
exml.AddKeyNameMapping("aes", param);
EncryptedKey ekey = new EncryptedKey();
byte[] encKeyBytes = XmlEncryption.EncryptKey(outerParam.GetKey(), param);
ekey.CipherData = new CipherData(encKeyBytes);
ekey.EncryptionMethod = new EncryptionMethod(NS.XmlEncAES256Url);
ekey.Id = "Key_ID";
ekey.KeyInfo = new KeyInfo();
ekey.KeyInfo.AddClause(new KeyInfoName("aes"));
KeyInfo topLevelKeyInfo = new KeyInfo();
topLevelKeyInfo.AddClause(new KeyInfoEncryptedKey(ekey));
EncryptedKey ekeyTopLevel = new EncryptedKey();
byte[] encTopKeyBytes = XmlEncryption.EncryptKey(innerParam.GetKey(), outerParam);
ekeyTopLevel.CipherData = new CipherData(encTopKeyBytes);
ekeyTopLevel.EncryptionMethod = new EncryptionMethod(NS.XmlEncAES256Url);
ekeyTopLevel.KeyInfo = topLevelKeyInfo;
doc.LoadXml(ekeyTopLevel.GetXml().OuterXml);
byte[] decryptedKey = exml.DecryptEncryptedKey(ekeyTopLevel);
Assert.Equal(innerParam.GetKey(), decryptedKey);
EncryptedData eData = new EncryptedData();
eData.EncryptionMethod = new EncryptionMethod(NS.XmlEncAES256Url);
eData.KeyInfo = topLevelKeyInfo;
var decryptedAlg = exml.GetDecryptionKey(eData, NS.None);
Assert.Equal(outerParam.GetKey(), ((KeyParameter)decryptedAlg).GetKey());
}
public void DecryptData_CipherReference_InvalidUri()
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
string xml = "<root> <child>sample</child> </root>";
doc.LoadXml(xml);
var random = new SecureRandom();
var ivdata = new byte[128 / 8];
var keydata = new byte[256 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
XmlEncryption exml = new XmlEncryption();
XmlDecryption dexml = new XmlDecryption();
exml.AddKeyNameMapping("aes", param);
EncryptedData ed = exml.Encrypt(doc.DocumentElement, "aes");
ed.CipherData = new CipherData();
ed.CipherData.CipherReference = new CipherReference("invaliduri");
Action decrypt = () => dexml.DecryptData(ed, param);
Assert.Throws <System.Security.Cryptography.CryptographicException>(decrypt);
}
public void EncryptKey_RSA_KeyDataNull()
{
var keyGen = GeneratorUtilities.GetKeyPairGenerator("RSA");
keyGen.Init(new KeyGenerationParameters(new SecureRandom(), 1024));
var pair = keyGen.GenerateKeyPair();
Assert.Throws <ArgumentNullException>(() => XmlEncryption.EncryptKey(null, (RsaKeyParameters)pair.Public, false));
}
public void EncryptData_Xml_SymmetricAlgorithmNull()
{
XmlDocument doc = new XmlDocument();
doc.LoadXml("<root />");
XmlEncryption ex = new XmlEncryption();
Assert.Throws <ArgumentNullException>(() => ex.EncryptData(doc.DocumentElement, null, true));
}
public void Encrypt_MissingKey()
{
XmlDocument doc = new XmlDocument();
doc.LoadXml("<root />");
XmlEncryption exml = new XmlEncryption();
Assert.Throws <System.Security.Cryptography.CryptographicException>(() => exml.Encrypt(doc.DocumentElement, "aes"));
}
public void Encrypt_KeyNameNull()
{
XmlDocument doc = new XmlDocument();
doc.LoadXml("<root />");
XmlEncryption exml = new XmlEncryption();
string keyName = null;
Assert.Throws <ArgumentNullException>(() => exml.Encrypt(doc.DocumentElement, keyName));
}
public void Encrypt_X509_CertificateNull()
{
XmlDocument doc = new XmlDocument();
doc.LoadXml("<root />");
XmlEncryption exml = new XmlEncryption();
X509Certificate certificate = null;
Assert.Throws <ArgumentNullException>(() => exml.Encrypt(doc.DocumentElement, certificate));
}
public void RoundtripSample1()
{
using (StringWriter sw = new StringWriter())
{
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
doc.LoadXml("<root> <child>sample</child> </root>");
XmlElement body = doc.DocumentElement;
var aes = CipherUtilities.GetCipher("AES/CBC/ZEROBYTEPADDING");
var ivdata = Convert.FromBase64String("pBUM5P03rZ6AE4ZK5EyBrw==");
var keydata = Convert.FromBase64String("o/ilseZu+keLBBWGGPlUHweqxIPc4gzZEFWr2nBt640=");
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
XmlEncryption exml = new XmlEncryption();
byte[] encrypted = exml.EncryptData(body, param, false);
EncryptedData edata = new EncryptedData();
edata.Type = XmlNameSpace.Url[NS.XmlEncElementUrl];
edata.EncryptionMethod = new EncryptionMethod(NS.XmlEncAES256Url);
EncryptedKey ekey = new EncryptedKey();
byte[] encKeyBytes = keydata;
ekey.CipherData = new CipherData(encKeyBytes);
ekey.EncryptionMethod = new EncryptionMethod(NS.XmlEncRSA15Url);
DataReference dr = new DataReference();
dr.Uri = "_0";
ekey.AddReference(dr);
edata.KeyInfo.AddClause(new KeyInfoEncryptedKey(ekey));
ekey.KeyInfo.AddClause(new RsaKeyValue());
edata.CipherData.CipherValue = encrypted;
XmlDecryption.ReplaceElement(doc.DocumentElement, edata, false);
doc.Save(new XmlTextWriter(sw));
}
{
var aes = CipherUtilities.GetCipher("AES/CBC/ZEROBYTEPADDING");
var random = new SecureRandom();
var ivdata = new byte[aes.GetBlockSize()];
var keydata = Convert.FromBase64String("o/ilseZu+keLBBWGGPlUHweqxIPc4gzZEFWr2nBt640=");
random.NextBytes(ivdata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
doc.LoadXml(sw.ToString());
XmlDecryption encxml = new XmlDecryption(doc);
EncryptedData edata = new EncryptedData();
edata.LoadXml(doc.DocumentElement);
encxml.ReplaceData(doc.DocumentElement, encxml.DecryptData(edata, param));
}
}
}
public void EncryptKey_KeyNull()
{
var random = new SecureRandom();
var ivdata = new byte[128 / 8];
var keydata = new byte[256 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
Assert.Throws <ArgumentNullException>(() => XmlEncryption.EncryptKey(null, new KeyParameter(keydata)));
}
public void EncryptKey_RSA_UseOAEP()
{
byte[] data = Encoding.ASCII.GetBytes("12345678");
var keyGen = GeneratorUtilities.GetKeyPairGenerator("RSA");
keyGen.Init(new KeyGenerationParameters(new SecureRandom(), 1024));
var pair = keyGen.GenerateKeyPair();
byte[] encryptedData = XmlEncryption.EncryptKey(data, (RsaKeyParameters)pair.Public, true);
byte[] decryptedData = XmlDecryption.DecryptKey(encryptedData, (RsaKeyParameters)pair.Private, true);
Assert.Equal(data, decryptedData);
}
public void DecryptData_CipherReference_IdUri()
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
string xml = "<root> <child>sample</child> </root>";
doc.LoadXml(xml);
var random = new SecureRandom();
var ivdata = new byte[128 / 8];
var keydata = new byte[256 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
XmlEncryption exml = new XmlEncryption(doc);
XmlDecryption dexml = new XmlDecryption(doc);
string cipherValue = Convert.ToBase64String(exml.EncryptData(Encoding.UTF8.GetBytes(xml), param));
EncryptedData ed = new EncryptedData();
ed.Type = XmlNameSpace.Url[NS.XmlEncElementUrl];
ed.EncryptionMethod = new EncryptionMethod(NS.XmlEncAES256Url);
ed.CipherData = new CipherData();
ed.CipherData.CipherReference = new CipherReference("#ID_0");
string xslt = "<xsl:stylesheet version=\"1.0\" xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\"><xsl:template match = \"/\"><xsl:value-of select=\".\" /></xsl:template></xsl:stylesheet>";
XmlDsigXsltTransform xsltTransform = new XmlDsigXsltTransform();
XmlDocument xsltDoc = new XmlDocument();
xsltDoc.LoadXml(xslt);
xsltTransform.LoadInnerXml(xsltDoc.ChildNodes);
ed.CipherData.CipherReference.AddTransform(xsltTransform);
ed.CipherData.CipherReference.AddTransform(new XmlDsigBase64Transform());
doc.LoadXml("<root></root>");
XmlNode encryptedDataNode = doc.ImportNode(ed.GetXml(), true);
doc.DocumentElement.AppendChild(encryptedDataNode);
XmlElement cipherDataByReference = doc.CreateElement("CipherData");
cipherDataByReference.SetAttribute("ID", "ID_0");
cipherDataByReference.InnerText = cipherValue;
doc.DocumentElement.AppendChild(cipherDataByReference);
string decryptedXmlString = Encoding.UTF8.GetString(dexml.DecryptData(ed, param));
Assert.Equal(xml, decryptedXmlString);
}
public void EncryptData_Xml_XmlElementNull()
{
XmlEncryption ex = new XmlEncryption();
var random = new SecureRandom();
var ivdata = new byte[128 / 8];
var keydata = new byte[256 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
Assert.Throws <ArgumentNullException>(() => ex.EncryptData(null, param, true));
}
public void AddKeyNameMapping_KeyNameNull()
{
XmlEncryption exml = new XmlEncryption();
var random = new SecureRandom();
var ivdata = new byte[128 / 8];
var keydata = new byte[256 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
Assert.Throws <ArgumentNullException>(() => exml.AddKeyNameMapping(null, param));
}
public void EncryptKey_AES()
{
var random = new SecureRandom();
var keydata = new byte[256 / 8];
random.NextBytes(keydata);
var param = new KeyParameter(keydata);
byte[] key = Encoding.ASCII.GetBytes("123456781234567812345678");
byte[] encryptedKey = XmlEncryption.EncryptKey(key, param);
Assert.NotNull(encryptedKey);
Assert.Equal(key, XmlDecryption.DecryptKey(encryptedKey, param));
}
private static void EncryptElement(XmlDocument doc, string elementName, ICipherParameters key)
{
var elementToEncrypt = (XmlElement)doc.GetElementsByTagName(elementName)[0];
var encryptedXml = new XmlEncryption();
var encryptedData = new EncryptedData()
{
Type = XmlNameSpace.Url[NS.XmlEncElementUrl],
EncryptionMethod = new EncryptionMethod(GetEncryptionMethodName(key))
};
encryptedData.CipherData.CipherValue = encryptedXml.EncryptData(elementToEncrypt, key, false);
XmlDecryption.ReplaceElement(elementToEncrypt, encryptedData, false);
}
public void DecryptKey_AESCorruptedKey8Bytes()
{
var random = new SecureRandom();
var keydata = new byte[256 / 8];
random.NextBytes(keydata);
var param = new KeyParameter(keydata);
byte[] key = Encoding.ASCII.GetBytes("12345678");
byte[] encryptedKey = XmlEncryption.EncryptKey(key, param);
encryptedKey[0] ^= 0xFF;
Assert.Throws <System.Security.Cryptography.CryptographicException>(() => XmlDecryption.DecryptKey(encryptedKey, param));
}
public void Properties()
{
XmlEncryption exml = new XmlEncryption();
exml.SetXmlDSigSearchDepth(10);
exml.SetResolver(null);
exml.SetPadding("NOPADDING");
exml.SetMode("CBC");
exml.SetEncoding(Encoding.ASCII);
exml.Recipient = "Recipient";
Assert.Equal(10, exml.GetXmlDSigSearchDepth());
Assert.Null(exml.GetResolver());
Assert.Equal("NOPADDING", exml.GetPadding());
Assert.Equal("CBC", exml.GetMode());
Assert.Equal(Encoding.ASCII, exml.GetEncoding());
Assert.Equal("Recipient", exml.Recipient);
}
private void CheckEncryptionMethod(object algorithm, string uri)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml("<root />");
XmlEncryption exml = new XmlEncryption();
exml.AddKeyNameMapping("key", algorithm);
EncryptedData edata = exml.Encrypt(doc.DocumentElement, "key");
IEnumerator keyInfoEnum = edata.KeyInfo.GetEnumerator();
keyInfoEnum.MoveNext();
KeyInfoEncryptedKey kiEncKey = keyInfoEnum.Current as KeyInfoEncryptedKey;
Assert.NotNull(edata);
Assert.Equal(uri, XmlNameSpace.Url[kiEncKey.GetEncryptedKey().EncryptionMethod.KeyAlgorithm]);
Assert.NotNull(edata.CipherData.CipherValue);
}
public void GetDecryptionKey_CarriedKeyName()
{
var random = new SecureRandom();
var ivdata = new byte[128 / 8];
var keydata = new byte[256 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var param = new ParametersWithIV(new KeyParameter(keydata), ivdata);
keydata = new byte[128 / 8];
random.NextBytes(ivdata);
random.NextBytes(keydata);
var innerParam = new ParametersWithIV(new KeyParameter(keydata), ivdata);
EncryptedData edata = new EncryptedData();
edata.KeyInfo = new KeyInfo();
edata.KeyInfo.AddClause(new KeyInfoName("aes"));
EncryptedKey ekey = new EncryptedKey();
byte[] encKeyBytes = XmlEncryption.EncryptKey(((KeyParameter)innerParam.Parameters).GetKey(), (KeyParameter)param.Parameters);
ekey.CipherData = new CipherData(encKeyBytes);
ekey.EncryptionMethod = new EncryptionMethod(NS.XmlEncAES256Url);
ekey.CarriedKeyName = "aes";
ekey.KeyInfo = new KeyInfo();
ekey.KeyInfo.AddClause(new KeyInfoName("another_aes"));
XmlDocument doc = new XmlDocument();
doc.LoadXml(ekey.GetXml().OuterXml);
XmlDecryption exml = new XmlDecryption(doc);
exml.AddKeyNameMapping("another_aes", param);
var decryptedAlg = exml.GetDecryptionKey(edata, NS.XmlEncAES256Url);
Assert.IsType <KeyParameter>(decryptedAlg);
Assert.Equal(((KeyParameter)innerParam.Parameters).GetKey(), ((KeyParameter)decryptedAlg).GetKey());
}
private XmlDocument GetTransformedOutput(XmlDocument doc, string nodeToEncrypt)
{
var aes = CipherUtilities.GetCipher("AES/CBC/PKCS7");
var random = new SecureRandom();
var keyData = new byte[aes.GetBlockSize()];
var ivData = new byte[aes.GetBlockSize()];
random.NextBytes(ivData);
random.NextBytes(keyData);
var key = new ParametersWithIV(new KeyParameter(keyData), ivData);
var encryptedXml = new XmlEncryption();
encryptedXml.AddKeyNameMapping("aes", key);
XmlElement elementToEncrypt = (XmlElement)doc.DocumentElement.SelectSingleNode(nodeToEncrypt);
EncryptedData encryptedData = encryptedXml.Encrypt(elementToEncrypt, "aes");
XmlDecryption.ReplaceElement(elementToEncrypt, encryptedData, false);
XmlNamespaceManager xmlNamespaceManager = new XmlNamespaceManager(doc.NameTable);
xmlNamespaceManager.AddNamespace("enc", XmlNameSpace.Url[NS.XmlEncNamespaceUrl]);
XmlElement encryptedNode = (XmlElement)doc.DocumentElement.SelectSingleNode("//enc:EncryptedData", xmlNamespaceManager);
encryptedNode.SetAttribute("ID", "#_0");
transform.LoadInput(doc);
var dencryptedXml = new XmlDecryption();
dencryptedXml.AddKeyNameMapping("aes", key);
transform.XmlDecryption = dencryptedXml;
XmlDocument transformedDocument = (XmlDocument)transform.GetOutput();
transform.XmlDecryption = null;
return(transformedDocument);
}
private static void Encrypt(XmlDocument doc, string elementName, string encryptionElementID, RsaKeyParameters rsaKey, string keyName, bool useOAEP)
{
var elementToEncrypt = (XmlElement)doc.GetElementsByTagName(elementName)[0];
var sessionKeyData = EncryptingAndDecryptingSymmetric.GenerateBlock(256);
var sessionKeyIV = EncryptingAndDecryptingSymmetric.GenerateBlock(128);
var sessionKey = new ParametersWithIV(new KeyParameter(sessionKeyData), sessionKeyIV);
var encryptedKey = new EncryptedKey()
{
CipherData = new CipherData(XmlEncryption.EncryptKey(sessionKeyData, rsaKey, useOAEP)),
EncryptionMethod = new EncryptionMethod(useOAEP ? NS.XmlEncRSAOAEPUrl : NS.XmlEncRSA15Url)
};
encryptedKey.AddReference(new DataReference()
{
Uri = "#" + encryptionElementID
});
var encryptedData = new EncryptedData()
{
Type = XmlNameSpace.Url[NS.XmlEncElementUrl],
Id = encryptionElementID,
EncryptionMethod = new EncryptionMethod(NS.XmlEncAES256Url)
};
encryptedData.KeyInfo.AddClause(new KeyInfoEncryptedKey(encryptedKey));
encryptedKey.KeyInfo.AddClause(new KeyInfoName()
{
Value = keyName
});
var encryptedXml = new XmlEncryption();
encryptedData.CipherData.CipherValue = encryptedXml.EncryptData(elementToEncrypt, sessionKey, false);
XmlDecryption.ReplaceElement(elementToEncrypt, encryptedData, false);
}
internal static SamlResponse Parse(string xml, IConfiguration configuration)
{
var samlXml = new XmlDocument();
samlXml.LoadXml(xml);
try
{
XmlEncryption.DecryptXml(
(RSACng)configuration.SamlCertificate.GetRSAPrivateKey(),
samlXml,
new[] { "//*[local-name() = 'EncryptedID']", "//*[local-name() = 'EncryptedAttribute']" });
}
catch (Exception e)
{
throw new CommunicatorException("Error decrypting data. See inner exception for more details.", e);
}
var doc = ResponseType.Deserialize(samlXml.InnerXml);
return(new SamlResponse(doc));
}
public void Encrypt_X509()
{
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
string xml = "<root> <child>sample</child> </root>";
doc.LoadXml(xml);
var certificate = TestHelpers.GetSampleX509Certificate();
XmlEncryption exml = new XmlEncryption();
EncryptedData ed = exml.Encrypt(doc.DocumentElement, certificate.Item1);
Assert.NotNull(ed);
doc.LoadXml(ed.GetXml().OuterXml);
XmlNamespaceManager nm = new XmlNamespaceManager(doc.NameTable);
nm.AddNamespace("enc", XmlNameSpace.Url[NS.XmlEncNamespaceUrl]);
Assert.NotNull(doc.SelectSingleNode("//enc:EncryptedKey", nm));
Assert.DoesNotContain("sample", doc.OuterXml);
}
internal static SamlResponse Parse(string xml, IConfiguration configuration)
{
var samlXml = new XmlDocument();
samlXml.LoadXml(xml);
ICollection <SamlAttributesEncryptionKey> encryptedAttributesEncryptionKeys = new Collection <SamlAttributesEncryptionKey>();
try
{
encryptedAttributesEncryptionKeys = XmlEncryption.DecryptXml(
configuration.SamlCertificate.PrivateKey as RSACryptoServiceProvider,
samlXml,
new[] { "//*[local-name() = 'EncryptedID']", "//*[local-name() = 'EncryptedAttribute']" });
}
catch (Exception e)
{
throw new CommunicatorException("Error decrypting data. See inner exception for more details.", e);
}
var doc = ResponseType.Deserialize(samlXml.InnerXml);
return(new SamlResponse(doc, encryptedAttributesEncryptionKeys));
}
public void PropagatedNamespaces_XmlDecryptionTransform(bool addPropagatedNamespace, string expectedResult)
{
XmlDocument baseDocument = new XmlDocument();
baseDocument.LoadXml("<a><b><c xmlns=\"urn:foo\"/></b></a>");
var aes = CipherUtilities.GetCipher("AES/CBC/PKCS7");
var random = new SecureRandom();
var keyData = new byte[aes.GetBlockSize()];
var ivData = new byte[aes.GetBlockSize()];
random.NextBytes(ivData);
random.NextBytes(keyData);
var key = new ParametersWithIV(new KeyParameter(keyData), ivData);
XmlEncryption encryptedXml = new XmlEncryption(baseDocument);
XmlDecryption decryptedXml = new XmlDecryption(baseDocument);
encryptedXml.AddKeyNameMapping("key", key);
decryptedXml.AddKeyNameMapping("key", key);
XmlElement bElement = (XmlElement)baseDocument.DocumentElement.SelectSingleNode("b");
EncryptedData encryptedData = encryptedXml.Encrypt(bElement, "key");
XmlDecryption.ReplaceElement(bElement, encryptedData, false);
XmlDecryptionTransform decryptionTransform = new XmlDecryptionTransform();
decryptionTransform.XmlDecryption = decryptedXml;
decryptionTransform.LoadInput(baseDocument);
if (addPropagatedNamespace)
{
decryptionTransform.PropagatedNamespaces.Add("f", "urn:foo");
}
XmlDocument decryptedDocument = (XmlDocument)decryptionTransform.GetOutput(typeof(XmlDocument));
Assert.Equal(expectedResult, decryptedDocument.OuterXml);
}
private static void Encrypt(XmlDocument doc, string elementName, string encryptionElementID, ICipherParameters key, string keyName, Func <ICipherParameters> innerKeyFactory)
{
var elementToEncrypt = (XmlElement)doc.GetElementsByTagName(elementName)[0];
ICipherParameters innerKey = innerKeyFactory();
var encryptedKey = new EncryptedKey()
{
CipherData = new CipherData(XmlEncryption.EncryptKey(((KeyParameter)((ParametersWithIV)innerKey).Parameters).GetKey(), (KeyParameter)((ParametersWithIV)key).Parameters)),
EncryptionMethod = new EncryptionMethod(EncryptingAndDecryptingSymmetric.GetEncryptionMethodName(key, keyWrap: true))
};
encryptedKey.AddReference(new DataReference()
{
Uri = "#" + encryptionElementID
});
var encryptedData = new EncryptedData()
{
Type = XmlNameSpace.Url[NS.XmlEncElementUrl],
Id = encryptionElementID,
EncryptionMethod = new EncryptionMethod(EncryptingAndDecryptingSymmetric.GetEncryptionMethodName(innerKey, keyWrap: false))
};
encryptedData.KeyInfo.AddClause(new KeyInfoEncryptedKey(encryptedKey));
encryptedKey.KeyInfo.AddClause(new KeyInfoName()
{
Value = keyName
});
var encryptedXml = new XmlEncryption();
encryptedData.CipherData.CipherValue = encryptedXml.EncryptData(elementToEncrypt, innerKey, false);
XmlDecryption.ReplaceElement(elementToEncrypt, encryptedData, false);
}
public static void DecryptWithCertificate_NotInStore()
{
const string SecretMessage = "Grilled cheese is tasty";
XmlDocument document = new XmlDocument();
document.LoadXml($"<data><secret>{SecretMessage}</secret></data>");
XmlElement toEncrypt = (XmlElement)document.DocumentElement.FirstChild;
var cert = TestHelpers.GetSampleX509Certificate();
XmlEncryption encryptor = new XmlEncryption(document);
EncryptedData encryptedElement = encryptor.Encrypt(toEncrypt, cert.Item1);
XmlDecryption.ReplaceElement(toEncrypt, encryptedElement, false);
XmlDocument document2 = new XmlDocument();
document2.LoadXml(document.OuterXml);
XmlDecryption decryptor = new XmlDecryption(document2);
Assert.Throws <System.Security.Cryptography.CryptographicException>(() => decryptor.DecryptDocument());
Assert.DoesNotContain(SecretMessage, document2.OuterXml);
}
