public void DecryptEncryptedKey_Empty()
{
XmlDecryption ex = new XmlDecryption();
EncryptedKey ek = new EncryptedKey();
Assert.Null(ex.DecryptEncryptedKey(ek));
}
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 DecryptEncryptedKey_Null()
{
XmlDecryption ex = new XmlDecryption();
Assert.Throws <ArgumentNullException>(() => ex.DecryptEncryptedKey(null));
}