1 files changed, 46 insertions, 0 deletions
diff --git a/ready_se/google/keymint/KM300/Applet/AndroidSEProviderLib/src/com/android/javacard/seprovider/KMException.java b/ready_se/google/keymint/KM300/Applet/AndroidSEProviderLib/src/com/android/javacard/seprovider/KMException.java
new file mode 100644
index 0000000..79983a2
--- /dev/null
+++ b/ready_se/google/keymint/KM300/Applet/AndroidSEProviderLib/src/com/android/javacard/seprovider/KMException.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright(C) 2020 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.
+ */
+
+package com.android.javacard.seprovider;
+
+import javacard.framework.JCSystem;
+
+/**
+ * KMException is shared instance of exception used for all exceptions in the applet. It is used to
+ * throw EMError errors.
+ */
+public class KMException extends RuntimeException {
+
+  private static short[] reason;
+  private static KMException exception;
+
+  private KMException() {}
+
+  public static short reason() {
+    return reason[0];
+  }
+
+  public static void throwIt(short e) {
+    if (reason == null) {
+      reason = JCSystem.makeTransientShortArray((short) 1, JCSystem.CLEAR_ON_DESELECT);
+    }
+    if (exception == null) {
+      exception = new KMException();
+    }
+    reason[0] = e;
+    throw exception;
+  }
+}