feat: add interoperable symmetric encryption system

Google APIs · copybara-github · commit 68e699a6d7c7 · 2023-07-20T12:02:14.000-07:00
PiperOrigin-RevId: 549699686
diff --git a/google/cloud/kms/v1/resources.proto b/google/cloud/kms/v1/resources.proto
@@ -352,6 +352,18 @@ message CryptoKeyVersion {
     // AES-GCM (Galois Counter Mode) using 256-bit keys.
     AES_256_GCM = 19;
 
+    // AES-CBC (Cipher Block Chaining Mode) using 128-bit keys.
+    AES_128_CBC = 42;
+
+    // AES-CBC (Cipher Block Chaining Mode) using 256-bit keys.
+    AES_256_CBC = 43;
+
+    // AES-CTR (Counter Mode) using 128-bit keys.
+    AES_128_CTR = 44;
+
+    // AES-CTR (Counter Mode) using 256-bit keys.
+    AES_256_CTR = 45;
+
     // RSASSA-PSS 2048 bit key with a SHA256 digest.
     RSA_SIGN_PSS_2048_SHA256 = 2;
 
