merge in mnc-dr-ryu-release history after reset to mnc-dr-ryu-dev
diff --git a/luni/src/test/java/libcore/javax/crypto/CipherTest.java b/luni/src/test/java/libcore/javax/crypto/CipherTest.java
index 38d6d8d..7cd6133 100644
--- a/luni/src/test/java/libcore/javax/crypto/CipherTest.java
+++ b/luni/src/test/java/libcore/javax/crypto/CipherTest.java
@@ -3537,4 +3537,45 @@
cipher.init(Cipher.ENCRYPT_MODE, keyGen.generateKeyPair().getPublic());
cipher.doFinal(new byte[] {1,2,3,4});
}
+
+ /*
+ * Check that GCM encryption with old and new instances update correctly.
+ * http://b/26694388
+ */
+ public void test_AESGCMNoPadding_Reuse_Success() throws Exception {
+ SecretKeySpec key = new SecretKeySpec(new byte[16], "AES");
+ GCMParameterSpec spec = new GCMParameterSpec(128, new byte[12]);
+ Cipher c1 = Cipher.getInstance("AES/GCM/NoPadding");
+ Cipher c2 = Cipher.getInstance("AES/GCM/NoPadding");
+
+ // Pollute the c1 cipher with AAD
+ c1.init(Cipher.ENCRYPT_MODE, key, spec);
+ c1.updateAAD(new byte[] {
+ 0x01, 0x02, 0x03, 0x04, 0x05,
+ });
+
+ // Now init each again and make sure the outputs are the same
+ c1.init(Cipher.ENCRYPT_MODE, key, spec);
+ c2.init(Cipher.ENCRYPT_MODE, key, spec);
+
+ byte[] aad = new byte[] {
+ 0x10, 0x20, 0x30, 0x40, 0x50, 0x60,
+ };
+ c1.updateAAD(aad);
+ c2.updateAAD(aad);
+
+ assertEquals(Arrays.toString(c1.doFinal()), Arrays.toString(c2.doFinal()));
+
+ // .doFinal should also reset the state, so check that as well.
+ byte[] aad2 = new byte[] {
+ 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11,
+ };
+
+ Cipher c3 = Cipher.getInstance("AES/GCM/NoPadding");
+ c3.init(Cipher.ENCRYPT_MODE, key, spec);
+
+ c1.updateAAD(aad2);
+ c3.updateAAD(aad2);
+ assertEquals(Arrays.toString(c1.doFinal()), Arrays.toString(c3.doFinal()));
+ }
}
