Symmetric key generation for AndroidKeyStore.

This currently supports AES and HMAC with SHA-256.

Bug: 18088752
Change-Id: Ife55438cf4129b895295681bb35091cd37eb73fb

1 files changed, 45 insertions, 0 deletions

diff --git a/keystore/java/android/security/CryptoOperationException.java b/keystore/java/android/security/CryptoOperationException.java
new file mode 100644
index 0000000..ce64455
--- /dev/null
+++ b/keystore/java/android/security/CryptoOperationException.java
@@ -0,0 +1,45 @@
+package android.security;
+
+/**
+ * Base class for exceptions during cryptographic operations which cannot throw a suitable checked
+ * exception.
+ *
+ * <p>The contract of the majority of crypto primitives/operations (e.g. {@code Cipher} or
+ * {@code Signature}) is that they can throw a checked exception during initialization, but are not
+ * permitted to throw a checked exception during operation. Because crypto operations can fail
+ * for a variety of reasons after initialization, this base class provides type-safety for unchecked
+ * exceptions that may be thrown in those cases.
+ *
+ * @hide
+ */
+public class CryptoOperationException extends RuntimeException {
+
+    /**
+     * Constructs a new {@code CryptoOperationException} without detail message and cause.
+     */
+    public CryptoOperationException() {
+        super();
+    }
+
+    /**
+     * Constructs a new {@code CryptoOperationException} with the provided detail message and no
+     * cause.
+     */
+    public CryptoOperationException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a new {@code CryptoOperationException} with the provided detail message and cause.
+     */
+    public CryptoOperationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructs a new {@code CryptoOperationException} with the provided cause.
+     */
+    public CryptoOperationException(Throwable cause) {
+        super(cause);
+    }
+}