/// <summary>
/// Generate an RSA key pair according to keySize_.
/// </summary>
///
/// <param name="privateKeyBlob"></param>
/// <param name="publicKeyBlob"></param>
private void generateKeyPair(Blob[] privateKeyBlob, Blob[] publicKeyBlob)
{
RsaKeyParams paras = new RsaKeyParams(keySize_);
DecryptKey privateKey = net.named_data.jndn.encrypt.algo.RsaAlgorithm.generateKey(paras);
privateKeyBlob[0] = privateKey.getKeyBits();
EncryptKey publicKey = net.named_data.jndn.encrypt.algo.RsaAlgorithm.deriveEncryptKey(privateKeyBlob[0]);
publicKeyBlob[0] = publicKey.getKeyBits();
}
public void testGetGroupKey()
{
// Create the group manager.
GroupManager manager = new GroupManager(new Name("Alice"), new Name(
"data_type"), new Sqlite3GroupManagerDb(
System.IO.Path.GetFullPath(groupKeyDatabaseFilePath.Name)), 1024, 1, keyChain);
setManager(manager);
// Get the data list from the group manager.
double timePoint1 = net.named_data.jndn.tests.unit_tests.UnitTestsCommon.fromIsoString("20150825T093000");
IList result = manager.getGroupKey(timePoint1);
AssertEquals(4, result.Count);
// The first data packet contains the group's encryption key (public key).
Data data = (Data) result[0];
AssertEquals(
"/Alice/READ/data_type/E-KEY/20150825T090000/20150825T100000",
data.getName().toUri());
EncryptKey groupEKey = new EncryptKey(data.getContent());
// Get the second data packet and decrypt.
data = (Data) result[1];
AssertEquals(
"/Alice/READ/data_type/D-KEY/20150825T090000/20150825T100000/FOR/ndn/memberA/ksk-123",
data.getName().toUri());
/////////////////////////////////////////////////////// Start decryption.
Blob dataContent = data.getContent();
// Get the nonce key.
// dataContent is a sequence of the two EncryptedContent.
EncryptedContent encryptedNonce = new EncryptedContent();
encryptedNonce.wireDecode(dataContent);
AssertEquals(0, encryptedNonce.getInitialVector().size());
AssertEquals(net.named_data.jndn.encrypt.algo.EncryptAlgorithmType.RsaOaep,
encryptedNonce.getAlgorithmType());
EncryptParams decryptParams = new EncryptParams(
net.named_data.jndn.encrypt.algo.EncryptAlgorithmType.RsaOaep);
Blob blobNonce = encryptedNonce.getPayload();
Blob nonce = net.named_data.jndn.encrypt.algo.RsaAlgorithm.decrypt(decryptKeyBlob, blobNonce,
decryptParams);
// Get the payload.
// Use the size of encryptedNonce to find the start of encryptedPayload.
ByteBuffer payloadContent = dataContent.buf().duplicate();
payloadContent.position(encryptedNonce.wireEncode().size());
EncryptedContent encryptedPayload = new EncryptedContent();
encryptedPayload.wireDecode(payloadContent);
AssertEquals(16, encryptedPayload.getInitialVector().size());
AssertEquals(net.named_data.jndn.encrypt.algo.EncryptAlgorithmType.AesCbc,
encryptedPayload.getAlgorithmType());
decryptParams.setAlgorithmType(net.named_data.jndn.encrypt.algo.EncryptAlgorithmType.AesCbc);
decryptParams.setInitialVector(encryptedPayload.getInitialVector());
Blob blobPayload = encryptedPayload.getPayload();
Blob largePayload = net.named_data.jndn.encrypt.algo.AesAlgorithm.decrypt(nonce, blobPayload,
decryptParams);
// Get the group D-KEY.
DecryptKey groupDKey = new DecryptKey(largePayload);
/////////////////////////////////////////////////////// End decryption.
// Check the D-KEY.
EncryptKey derivedGroupEKey = net.named_data.jndn.encrypt.algo.RsaAlgorithm.deriveEncryptKey(groupDKey
.getKeyBits());
AssertTrue(groupEKey.getKeyBits().equals(derivedGroupEKey.getKeyBits()));
// Check the third data packet.
data = (Data) result[2];
AssertEquals(
"/Alice/READ/data_type/D-KEY/20150825T090000/20150825T100000/FOR/ndn/memberB/ksk-123",
data.getName().toUri());
// Check the fourth data packet.
data = (Data) result[3];
AssertEquals(
"/Alice/READ/data_type/D-KEY/20150825T090000/20150825T100000/FOR/ndn/memberC/ksk-123",
data.getName().toUri());
// Check invalid time stamps for getting the group key.
double timePoint2 = net.named_data.jndn.tests.unit_tests.UnitTestsCommon.fromIsoString("20150826T083000");
AssertEquals(0, manager.getGroupKey(timePoint2).Count);
double timePoint3 = net.named_data.jndn.tests.unit_tests.UnitTestsCommon.fromIsoString("20150827T023000");
AssertEquals(0, manager.getGroupKey(timePoint3).Count);
}
