public EnvelopeEncryptionJsonImpl(
AppEncryptionPartition partition,
IMetastorePersistence <JObject> metastorePersistence,
SecureCryptoKeyDictionary <DateTimeOffset> systemKeyCache,
SecureCryptoKeyDictionaryFactory <DateTimeOffset> intermediateKeyCacheFactory,
AeadEnvelopeCrypto aeadEnvelopeCrypto,
CryptoPolicy cryptoPolicy,
KeyManagementService keyManagementService)
{
this.partition = partition;
this.metastorePersistence = metastorePersistence;
this.systemKeyCache = systemKeyCache;
intermediateKeyCache = intermediateKeyCacheFactory.CreateSecureCryptoKeyDictionary();
crypto = aeadEnvelopeCrypto;
this.cryptoPolicy = cryptoPolicy;
this.keyManagementService = keyManagementService;
}
private object[] GenerateMocks(KeyState cacheIK, KeyState metaIK, KeyState cacheSK, KeyState metaSK)
{
Partition partition = new DefaultPartition(
cacheIK + "CacheIK_" + metaIK + "MetaIK_" + DateTimeUtils.GetCurrentTimeAsUtcIsoDateTimeOffset() +
"_" + Random.Next(),
cacheSK + "CacheSK_" + metaSK + "MetaSK_" + DateTimeUtils.GetCurrentTimeAsUtcIsoDateTimeOffset() + "_" + Random.Next(),
DefaultProductId);
KeyManagementService kms = configFixture.KeyManagementService;
CryptoKeyHolder cryptoKeyHolder = CryptoKeyHolder.GenerateIKSK();
Mock <IMetastore <JObject> > metastoreMock = MetastoreMock.CreateMetastoreMock(
partition, kms, metaIK, metaSK, cryptoKeyHolder, configFixture.Metastore);
CacheMock cacheMock = CacheMock.CreateCacheMock(cacheIK, cacheSK, cryptoKeyHolder);
// Mimics (mostly) the old TimeBasedCryptoPolicyImpl settings
CryptoPolicy cryptoPolicy = BasicExpiringCryptoPolicy.NewBuilder()
.WithKeyExpirationDays(KeyExpiryDays)
.WithRevokeCheckMinutes(int.MaxValue)
.WithCanCacheIntermediateKeys(false)
.WithCanCacheSystemKeys(false)
.Build();
SecureCryptoKeyDictionary <DateTimeOffset> intermediateKeyCache = cacheMock.IntermediateKeyCache;
SecureCryptoKeyDictionary <DateTimeOffset> systemKeyCache = cacheMock.SystemKeyCache;
EnvelopeEncryptionJsonImpl envelopeEncryptionJson = new EnvelopeEncryptionJsonImpl(
partition,
metastoreMock.Object,
systemKeyCache,
intermediateKeyCache,
new BouncyAes256GcmCrypto(),
cryptoPolicy,
kms);
IEnvelopeEncryption <byte[]> envelopeEncryptionByteImpl =
new EnvelopeEncryptionBytesImpl(envelopeEncryptionJson);
return(new object[]
{
envelopeEncryptionByteImpl, metastoreMock, cacheIK, metaIK, cacheSK, metaSK,
partition,
});
}
private void TestSessionCacheGetSessionAfterUseAndNotExpiredShouldNotEvict()
{
CryptoPolicy policy = BasicExpiringCryptoPolicy.NewBuilder()
.WithKeyExpirationDays(1)
.WithRevokeCheckMinutes(30)
.WithCanCacheSessions(true)
.Build();
using (SessionFactory factory = SessionFactory.NewBuilder(TestProductId, TestServiceId)
.WithMetastore(metastoreSpy.Object)
.WithCryptoPolicy(policy)
.WithStaticKeyManagementService(TestStaticMasterKey)
.Build())
{
byte[] payload = { 0, 1, 2, 3, 4, 5, 6, 7 };
byte[] drr = null;
using (Session <byte[], byte[]> sessionBytes = factory.GetSessionBytes(TestPartitionId))
{
drr = sessionBytes.Encrypt(payload);
byte[] decryptedPayload = sessionBytes.Decrypt(drr);
Assert.Equal(payload, decryptedPayload);
}
// Note we do not sleep
// Reset so we can examine 2nd session's interactions
metastoreSpy.Reset();
// Use same partition to get the same cached session while it's still in use
using (Session <byte[], byte[]> sessionBytes = factory.GetSessionBytes(TestPartitionId))
{
byte[] decryptedPayload = sessionBytes.Decrypt(drr);
Assert.Equal(payload, decryptedPayload);
// verify no metastore interactions in the decrypt flow (since IKs cached via session caching)
metastoreSpy.Verify(
x => x.Load(It.IsAny <string>(), It.IsAny <DateTimeOffset>()), Times.Never);
}
// Verify that nothing is evicted from cache since the session is still in use.
Assert.Equal(1, factory.SessionCache.Count);
}
}
private void TestSessionCacheMultiThreadedWithMaxSessionReachedSameSession()
{
long sessionCacheMaxSize = 1;
CryptoPolicy policy = BasicExpiringCryptoPolicy.NewBuilder()
.WithKeyExpirationDays(1)
.WithRevokeCheckMinutes(30)
.WithCanCacheSessions(true)
.WithSessionCacheMaxSize(sessionCacheMaxSize)
.Build();
using (SessionFactory factory = SessionFactory.NewBuilder(TestProductId, TestServiceId)
.WithInMemoryMetastore()
.WithCryptoPolicy(policy)
.WithStaticKeyManagementService(TestStaticMasterKey)
.Build())
{
int numThreads = 100;
int numRequests = 100;
// Get the current settings and try to force minWorkers
ThreadPool.GetMinThreads(out _, out var currentMinIOC);
Assert.True(ThreadPool.SetMinThreads(numThreads, currentMinIOC));
long completedTasks = 0;
Parallel.ForEach(Enumerable.Range(0, numRequests), i =>
{
using (Session <byte[], byte[]> sessionBytes = factory.GetSessionBytes(TestPartitionId))
{
byte[] payload = { 0, 1, 2, 3, 4, 5, 6, 7 };
byte[] drr = sessionBytes.Encrypt(payload);
byte[] decryptedPayload = sessionBytes.Decrypt(drr);
Assert.Equal(payload, decryptedPayload);
Interlocked.Increment(ref completedTasks);
}
});
// Wait for all threads to complete
Assert.Equal(numRequests, completedTasks);
Assert.Equal(1, factory.SessionCache.Count);
}
}
public IKeyManagementServiceStep WithCryptoPolicy(CryptoPolicy policy)
{
cryptoPolicy = policy;
return(this);
}
public IKeyManagementServiceStep WithNeverExpiredCryptoPolicy()
{
cryptoPolicy = new NeverExpiredCryptoPolicy();
return(this);
}
private static async void App(Options options)
{
IMetastore <JObject> metastore = null;
KeyManagementService keyManagementService = null;
if (options.Metastore == Metastore.ADO)
{
if (options.AdoConnectionString != null)
{
logger.LogInformation("using ADO-based metastore...");
metastore = AdoMetastoreImpl
.NewBuilder(MySqlClientFactory.Instance, options.AdoConnectionString)
.Build();
}
else
{
logger.LogError("ADO connection string is a mandatory parameter with Metastore Type: ADO");
Console.WriteLine(HelpText.AutoBuild(cmdOptions, null, null));
return;
}
}
else if (options.Metastore == Metastore.DYNAMODB)
{
logger.LogInformation("using DynamoDB-based metastore...");
AWSConfigs.AWSRegion = "us-west-2";
metastore = DynamoDbMetastoreImpl.NewBuilder().Build();
}
else
{
logger.LogInformation("using in-memory metastore...");
metastore = new InMemoryMetastoreImpl <JObject>();
}
if (options.Kms == Kms.AWS)
{
if (options.PreferredRegion != null && options.RegionToArnTuples != null)
{
Dictionary <string, string> regionToArnDictionary = new Dictionary <string, string>();
foreach (string regionArnPair in options.RegionToArnTuples)
{
string[] regionArnArray = regionArnPair.Split("=");
regionToArnDictionary.Add(regionArnArray[0], regionArnArray[1]);
}
logger.LogInformation("using AWS KMS...");
keyManagementService = AwsKeyManagementServiceImpl
.NewBuilder(regionToArnDictionary, options.PreferredRegion).Build();
}
else
{
logger.LogError("Preferred region and <region>=<arn> tuples are mandatory with KMS Type: AWS");
Console.WriteLine(HelpText.AutoBuild(cmdOptions, null, null));
return;
}
}
else
{
logger.LogInformation("using static KMS...");
keyManagementService = new StaticKeyManagementServiceImpl("mysupersecretstaticmasterkey!!!!");
}
CryptoPolicy cryptoPolicy = BasicExpiringCryptoPolicy
.NewBuilder()
.WithKeyExpirationDays(KeyExpirationDays)
.WithRevokeCheckMinutes(CacheCheckMinutes)
.Build();
// Setup metrics reporters and always include console.
IMetricsBuilder metricsBuilder = new MetricsBuilder()
.Report.ToConsole(consoleOptions => consoleOptions.FlushInterval = TimeSpan.FromSeconds(60));
// CloudWatch metrics generation
if (options.EnableCloudWatch)
{
// Fill in when we open source our App.Metrics cloudwatch reporter separately
}
IMetrics metrics = metricsBuilder.Build();
// Create a session factory for this app. Normally this would be done upon app startup and the
// same factory would be used anytime a new session is needed for a partition (e.g., shopper).
// We've split it out into multiple using blocks to underscore this point.
using (SessionFactory sessionFactory = SessionFactory
.NewBuilder("productId", "reference_app")
.WithMetastore(metastore)
.WithCryptoPolicy(cryptoPolicy)
.WithKeyManagementService(keyManagementService)
.WithMetrics(metrics)
.Build())
{
// Now create an actual session for a partition (which in our case is a pretend shopper id). This session is used
// for a transaction and is disposed automatically after use due to the IDisposable implementation.
using (Session <byte[], byte[]> sessionBytes =
sessionFactory.GetSessionBytes("shopper123"))
{
const string originalPayloadString = "mysupersecretpayload";
foreach (int i in Enumerable.Range(0, options.Iterations))
{
string dataRowString;
// If we get a DRR as a command line argument, we want to directly decrypt it
if (options.Drr != null)
{
dataRowString = options.Drr;
}
else
{
// Encrypt the payload
byte[] dataRowRecordBytes =
sessionBytes.Encrypt(Encoding.UTF8.GetBytes(originalPayloadString));
// Consider this us "persisting" the DRR
dataRowString = Convert.ToBase64String(dataRowRecordBytes);
}
logger.LogInformation("dataRowRecord as string = {dataRow}", dataRowString);
byte[] newDataRowRecordBytes = Convert.FromBase64String(dataRowString);
// Decrypt the payload
string decryptedPayloadString =
Encoding.UTF8.GetString(sessionBytes.Decrypt(newDataRowRecordBytes));
logger.LogInformation("decryptedPayloadString = {payload}", decryptedPayloadString);
logger.LogInformation("matches = {result}", originalPayloadString.Equals(decryptedPayloadString));
}
}
}
// Force final publish of metrics
await Task.WhenAll(((IMetricsRoot)metrics).ReportRunner.RunAllAsync());
}
public SecureCryptoKeyDictionaryFactory(CryptoPolicy cryptoPolicy)
{
this.cryptoPolicy = cryptoPolicy;
}
