diff --git a/keystore/defaults.h b/keystore/defaults.h
new file mode 100644
index 0000000..9232dd0
--- /dev/null
+++ b/keystore/defaults.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#ifndef KEYSTORE_DEFAULTS_H_
+#define KEYSTORE_DEFAULTS_H_
+
+/*
+ * These must be kept in sync with
+ * frameworks/base/keystore/java/android/security/KeyPairGeneratorSpec.java
+ */
+
+/* DSA */
+#define DSA_DEFAULT_KEY_SIZE 1024
+#define DSA_MIN_KEY_SIZE 512
+#define DSA_MAX_KEY_SIZE 8192
+
+/* EC */
+#define EC_DEFAULT_KEY_SIZE 256
+#define EC_MIN_KEY_SIZE 192
+#define EC_MAX_KEY_SIZE 521
+
+/* RSA */
+#define RSA_DEFAULT_KEY_SIZE 2048
+#define RSA_DEFAULT_EXPONENT 0x10001
+#define RSA_MIN_KEY_SIZE 512
+#define RSA_MAX_KEY_SIZE 8192
+
+#endif /* KEYSTORE_DEFAULTS_H_ */