Merge "Add Keymaster KM_ORIGIN_UNKNOWN constant."

core/java/android/security/keymaster/KeymasterDefs.java

@@ -118,9 +118,9 @@ public final class KeymasterDefs {
     public static final int KM_DIGEST_SHA_2_512 = 6;
 
     // Key origins.
-    public static final int KM_ORIGIN_HARDWARE = 0;
-    public static final int KM_ORIGIN_SOFTWARE = 1;
+    public static final int KM_ORIGIN_GENERATED = 0;
     public static final int KM_ORIGIN_IMPORTED = 2;
+    public static final int KM_ORIGIN_UNKNOWN = 3;
 
     // Key usability requirements.
     public static final int KM_BLOB_STANDALONE = 0;

keystore/java/android/security/KeyStoreKeyProperties.java

@@ -225,15 +225,25 @@ public abstract class KeyStoreKeyProperties {
         /** Key was imported into AndroidKeyStore. */
         public static final int IMPORTED = 1 << 1;
 
+        /**
+         * Origin of the key is unknown. This can occur only for keys backed by an old TEE
+         * implementation which does not record origin information.
+         *
+         * @hide
+         */
+        public static final int UNKNOWN = 1 << 2;
+
         /**
          * @hide
          */
         public static @OriginEnum int fromKeymaster(int origin) {
             switch (origin) {
-                case KeymasterDefs.KM_ORIGIN_HARDWARE:
+                case KeymasterDefs.KM_ORIGIN_GENERATED:
                     return GENERATED;
                 case KeymasterDefs.KM_ORIGIN_IMPORTED:
                     return IMPORTED;
+                case KeymasterDefs.KM_ORIGIN_UNKNOWN:
+                    return UNKNOWN;
                 default:
                     throw new IllegalArgumentException("Unknown origin: " + origin);
             }