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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.security;
     18 
     19 /**
     20  * Provides the SHA-1 hash encyption.
     21  */
     22 public class Sha1MessageDigest extends MessageDigest
     23 {
     24     // ptr to native context
     25     private int mNativeSha1Context;
     26 
     27     public Sha1MessageDigest()
     28     {
     29         init();
     30     }
     31 
     32     public byte[] digest(byte[] input)
     33     {
     34         update(input);
     35         return digest();
     36     }
     37 
     38     private native void init();
     39     public native void update(byte[] input);
     40     public native byte[] digest();
     41     native public void reset();
     42 }
     43