add net examples

Examples/runtimes/java/DynamoDbEncryption/src/main/java/software/amazon/cryptography/examples/keyring/RawEcdhKeyringExample.java

@@ -278,9 +278,9 @@ public static void DiscoveryRawEcdhKeyringGetItem(
     }
 
     // 2. Create the keyring.
-    //    This keyring uses an ephemeral configuration. This configuration will always create a new
-    //    key pair as the sender key pair for the key agreement operation. The ephemeral configuration can only
-    //    encrypt data and CANNOT decrypt messages.
+    //    This keyring uses a discovery configuration. This configuration will check on decrypt
+    //    if it is meant to decrypt the message by checking if the configured public key is stored on the message.
+    //    The discovery configuration can only decrypt messages and CANNOT encrypt messages.
     //    The DynamoDb encryption client uses this to encrypt and decrypt items.
     final CreateRawEcdhKeyringInput keyringInput = CreateRawEcdhKeyringInput
       .builder()

Examples/runtimes/net/src/Examples.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
+using Examples.keyring;
 
 namespace Examples
 {
@@ -10,7 +11,7 @@ class Program
         static async Task Main()
         {
             ItemEncryptDecryptExample.PutItemGetItem();
-
+            
             await BasicPutGetExample.PutItemGetItem();
             await ScanErrorExample.ScanError();
             await GetEncryptedDataKeyDescriptionExample.GetEncryptedDataKeyDescription();
@@ -22,6 +23,8 @@ static async Task Main()
             await MultiKeyringExample.MultiKeyringGetItemPutItem();
             await RawRsaKeyringExample.RawRsaKeyringGetItemPutItem();
             await KmsRsaKeyringExample.KmsRsaKeyringGetItemPutItem();
+            await RawEcdhKeyringExample.RawEcdhKeyringExamples();
+            await KmsEcdhKeyringExample.KmsEcdhKeyringExamples();
 
             var keyId = CreateKeyStoreKeyExample.KeyStoreCreateKey();
             var keyId2 = CreateKeyStoreKeyExample.KeyStoreCreateKey();
@@ -30,7 +33,7 @@ static async Task Main()
             Thread.Sleep(5000);
 
             await HierarchicalKeyringExample.HierarchicalKeyringGetItemPutItem(keyId, keyId2);
-
+            
             await BasicSearchableEncryptionExample.PutItemQueryItemWithBeacon(keyId);
             await CompoundBeaconSearchableEncryptionExample.PutItemQueryItemWithCompoundBeacon(keyId);
             await VirtualBeaconSearchableEncryptionExample.PutItemQueryItemWithVirtualBeacon(keyId);

Examples/runtimes/net/src/TestUtils.cs

@@ -23,6 +23,12 @@ public class TestUtils
 
     public static readonly string TEST_KMS_RSA_KEY_ID =
         "arn:aws:kms:us-west-2:658956600833:key/8b432da4-dde4-4bc3-a794-c7d68cbab5a6";
+
+    public static readonly string  TEST_KMS_ECDH_KEY_ID_P256_SENDER = 
+        "arn:aws:kms:us-west-2:370957321024:key/eabdf483-6be2-4d2d-8ee4-8c2583d416e9";
+
+    public static readonly string TEST_KMS_ECDH_KEY_ID_P256_RECIPIENT = 
+        "arn:aws:kms:us-west-2:370957321024:key/0265c8e9-5b6a-4055-8f70-63719e09fda5";
 
     public static readonly string TEST_MRK_REPLICA_KEY_ID_US_EAST_1 =
         "arn:aws:kms:us-east-1:658956600833:key/mrk-80bd8ecdcd4342aebd84b7dc9da498a7";