Initial Contribution

1 files changed, 43 insertions, 0 deletions

diff --git a/core/java/android/security/MessageDigest.java b/core/java/android/security/MessageDigest.java
new file mode 100644
index 0000000..93040b9
--- /dev/null
+++ b/core/java/android/security/MessageDigest.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2007 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 android.security;
+
+import java.security.NoSuchAlgorithmException;
+
+public abstract class MessageDigest 
+{    
+    public static MessageDigest getInstance(String algorithm) 
+        throws NoSuchAlgorithmException
+    {
+        if (algorithm == null) {
+            return null;
+        }
+        
+        if (algorithm.equals("SHA-1")) {
+            return new Sha1MessageDigest();
+        }
+        else if (algorithm.equals("MD5")) {
+            return new Md5MessageDigest();
+        }
+        
+        throw new NoSuchAlgorithmException();
+    }
+    
+    public abstract void update(byte[] input);    
+    public abstract byte[] digest();
+    public abstract byte[] digest(byte[] input);
+}