2 * Copyright (C) 2008 Esmertec AG.
3 * Copyright (C) 2008 The Android Open Source Project
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 package com.android.im.imps;
20 import com.android.im.engine.ImException;
22 import org.apache.commons.codec.binary.Base64;
24 import android.security.MessageDigest;
26 import java.io.UnsupportedEncodingException;
27 import java.security.NoSuchAlgorithmException;
29 public class StandardPasswordDigest implements PasswordDigest {
31 public String digest(String schema, String nonce, String password) throws ImException {
36 inputBytes = (nonce + password).getBytes("ISO-8859-1");
37 } catch (UnsupportedEncodingException e) {
38 throw new ImException(e);
42 if ("SHA".equals(schema))
44 MessageDigest md = MessageDigest.getInstance(schema);
45 digestBytes = md.digest(inputBytes);
46 } catch (NoSuchAlgorithmException e) {
47 throw new ImException("Unsupported schema: " + schema);
49 return new String(Base64.encodeBase64(digestBytes));
52 public String[] getSupportedDigestSchema() {
53 return new String[] {"MD5", "SHA"};