public void TestAnonymizeEnergiemengeEncryptionRoundtrip()
{
BO4E.StaticLogger.Logger = new Microsoft.Extensions.Logging.Debug.DebugLogger("Testlogger", (log, level) => { return(true); });
Energiemenge em = new Energiemenge()
{
LokationsId = "DE0123456789012345678901234567890",
LokationsTyp = BO4E.ENUM.Lokationstyp.MeLo,
Energieverbrauch = new List <Verbrauch>()
{
new Verbrauch()
{
Wert = 123.456M,
Wertermittlungsverfahren = BO4E.ENUM.Wertermittlungsverfahren.MESSUNG,
Obiskennzahl = "1-2-3-4",
Einheit = BO4E.ENUM.Mengeneinheit.KWH
}
}
};
//ENCRYPTION
var encConf = new AnonymizerConfiguration();
encConf.SetOption(DataCategory.POD, AnonymizerApproach.ENCRYPT);
Energiemenge encryptedEm;
using (Anonymizer anonymizer = new Anonymizer(encConf))
{
X509Certificate2 x509certPubl = new X509Certificate2(X509Certificate2.CreateFromCertFile("anonymizerTests/certificates/publicX509Cert.crt"));
anonymizer.SetPublicKey(x509certPubl);
encryptedEm = anonymizer.ApplyOperations <Energiemenge>(em);
}
//DECRYPTION
var decConf = new AnonymizerConfiguration();
decConf.SetOption(DataCategory.POD, AnonymizerApproach.DECRYPT);
Energiemenge decryptedEm;
using (Anonymizer decryptingAnonymizer = new Anonymizer(decConf))
{
AsymmetricCipherKeyPair keyPair;
using (var reader = File.OpenText(@"anonymizerTests/certificates/privateKey.pem")) // file containing RSA PKCS1 private key
{
keyPair = (AsymmetricCipherKeyPair) new PemReader(reader).ReadObject();
}
decryptingAnonymizer.SetPrivateKey(keyPair.Private);
decryptedEm = decryptingAnonymizer.ApplyOperations <Energiemenge>(encryptedEm);
}
Assert.AreEqual(em.LokationsId, decryptedEm.LokationsId);
Assert.IsFalse(Anonymizer.HasHashedKey(em));
}
public void TestOperations()
{
BO4E.StaticLogger.Logger = new Microsoft.Extensions.Logging.Debug.DebugLogger("Testlogger", (log, level) => { return(true); });
string[] files = Directory.GetFiles($"anonymizerTests/masterdata/", "*.json"); //
foreach (string testFile in files)
{
JObject json;
using (StreamReader r = new StreamReader(testFile))
{
string jsonString = r.ReadToEnd();
json = JObject.Parse(jsonString);
}
BusinessObject bo;
using (Anonymizer a = new Anonymizer(new AnonymizerConfiguration()))
{
bo = JsonConvert.DeserializeObject <BusinessObject>(json["input"].ToString());
Assert.IsTrue(bo.Equals(a.ApplyOperations <BusinessObject>(bo)));
}
AnonymizerConfiguration ac = new AnonymizerConfiguration();
HashSet <AnonymizerApproach> allApproaches = new HashSet <AnonymizerApproach>();;
Dictionary <string, string> operations = JsonConvert.DeserializeObject <Dictionary <string, string> >(((JObject)json["operations"]).ToString());
//Assert.AreEqual(json["input"].ToString(), resultJobject.ToString(), "Anonymizer without configuration should return the original message");
foreach (string key in operations.Keys)
{
Enum.TryParse(key, out DataCategory option);
Enum.TryParse(operations[key], out AnonymizerApproach approach);
Assert.IsNotNull(option, "Option invalid. Check test file " + testFile);
Assert.IsNotNull(approach, "Approach invalid, Check test file " + testFile);
ac.SetOption(option, approach);
allApproaches.Add(approach);
}
using (Anonymizer a = new Anonymizer(ac))
{
if (ac.operations.ContainsValue(AnonymizerApproach.ENCRYPT))
{
X509Certificate2 x509certPubl = new X509Certificate2(X509Certificate2.CreateFromCertFile("anonymizerTests/certificates/publicX509Cert.crt"));
a.SetPublicKey(x509certPubl);
}
if (ac.operations.ContainsValue(AnonymizerApproach.HASH))
{
byte[] predefinedSalt = new byte[] { 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x80, 0x90 }; // only predefined for test case
a.SetHashingSalt(predefinedSalt);
}
JObject resultJobject = a.ApplyOperations <JObject>(JsonConvert.DeserializeObject <BusinessObject>(json["input"].ToString()));
if (allApproaches.Count == 1 && allApproaches.Contains(AnonymizerApproach.ENCRYPT))
{
// iff the file only contains encryption operations, we simple encrypt it once,
// decrypt the cipher text and assert they're equal. This complete reversion
// round trip is not possible if any other option like DELETE, REPLACE, HASH etc.
// is chosen.
AnonymizerConfiguration acInvert = new AnonymizerConfiguration();
foreach (string key in operations.Keys)
{
if (Enum.TryParse(operations[key], out AnonymizerApproach option))
{
if (Enum.TryParse(key, out DataCategory dc))
{
acInvert.SetOption(dc, AnonymizerApproach.DECRYPT);
}
}
}
BusinessObject decryptedBo;
using (Anonymizer d = new Anonymizer(acInvert))
{
AsymmetricCipherKeyPair keyPair;
using (var reader = File.OpenText(@"anonymizerTests/certificates/privateKey.pem")) // file containing RSA PKCS1 private key
{
//Org.BouncyCastle.Crypto.Parameters.RsaPrivateCrtKeyParameters rpk = (Org.BouncyCastle.Crypto.Parameters.RsaPrivateCrtKeyParameters)new PemReader(reader).ReadObject();
keyPair = (AsymmetricCipherKeyPair) new PemReader(reader).ReadObject();
}
d.SetPrivateKey(keyPair.Private);
decryptedBo = d.ApplyOperations <BusinessObject>(resultJobject);
}
var jdp = new JsonDiffPatch(); // https://github.com/wbish/jsondiffpatch.net
JToken left, right;
left = JsonHelper.RemoveEmptyChildren(json["input"]);
right = JsonHelper.RemoveEmptyChildren(JObject.FromObject(decryptedBo));
var patch = jdp.Diff(left, right);
string additionalMessage = testFile;
if (patch != null)
{
additionalMessage = $";\r\n Diff: { patch.ToString()}";
}
// patch == null <--> jobjects match (except for key order)
Assert.IsNull(patch, $"Decryption failed: {testFile}{additionalMessage}");
}
else
{
//
// compare the processed result with a predefined json because the reversion
// round trip test is impossible
//
foreach (JProperty entry in json["assertions"])
{
string jsonpath = entry.Name;
var expectedResult = entry.Value;
JToken testResult = resultJobject.SelectToken(jsonpath);
if (expectedResult != null && expectedResult.ToString() == "{}")
{
expectedResult = null;
}
if ((expectedResult == null || !expectedResult.HasValues) && testResult == null)
{
continue;
}
else if (expectedResult == null && testResult != null)
{
Assert.AreEqual(expectedResult, testResult.ToString(), $"Path {jsonpath} in {testFile} returned value {testResult} where null was expected.");
}
else if (expectedResult != null && testResult == null)
{
Assert.AreEqual(expectedResult.ToString(), testResult, $"Path {jsonpath} in {testFile} returned null where {expectedResult} was expected.");
}
else
{
Assert.AreEqual(expectedResult.ToString(), testResult.ToString(), $"Path {jsonpath} in {testFile} didn't return the expected result {expectedResult} but instead {testResult}");
}
}
}
}
}
}