return plaintext and ciphertext for ease of verification

Author: RitvikKapila

performance_tests/src/aws_encryption_sdk_performance_tests/keyrings/aws_kms_keyring.py

@@ -59,11 +59,13 @@ def encrypt_using_keyring(
         commitment_policy=CommitmentPolicy.REQUIRE_ENCRYPT_REQUIRE_DECRYPT
     )
 
-    _, _ = client.encrypt(
+    ciphertext_data, _ = client.encrypt(
         source=plaintext_data,
         keyring=keyring
     )
 
+    return ciphertext_data
+
 
 def decrypt_using_keyring(
     ciphertext_data: bytes,
@@ -81,7 +83,9 @@ def decrypt_using_keyring(
         commitment_policy=CommitmentPolicy.REQUIRE_ENCRYPT_REQUIRE_DECRYPT
     )
 
-    _, _ = client.decrypt(
+    decrypted_plaintext_data, _ = client.decrypt(
         source=ciphertext_data,
         keyring=keyring
     )
+
+    return decrypted_plaintext_data

performance_tests/src/aws_encryption_sdk_performance_tests/master_key_providers/aws_kms_key_provider.py

@@ -42,11 +42,13 @@ def encrypt_using_key_provider(
         commitment_policy=CommitmentPolicy.REQUIRE_ENCRYPT_REQUIRE_DECRYPT
     )
 
-    _, _ = client.encrypt(
+    ciphertext_data, _ = client.encrypt(
         source=plaintext_data,
         key_provider=key_provider
     )
 
+    return ciphertext_data
+
 
 def decrypt_using_key_provider(
     ciphertext_data: bytes,
@@ -64,7 +66,9 @@ def decrypt_using_key_provider(
         commitment_policy=CommitmentPolicy.REQUIRE_ENCRYPT_REQUIRE_DECRYPT
     )
 
-    _, _ = client.decrypt(
+    decrypted_plaintext_data, _ = client.decrypt(
         source=ciphertext_data,
         key_provider=key_provider
     )
+
+    return decrypted_plaintext_data