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1   package org.apache.commons.openpgp;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one or more
5    * contributor license agreements.  See the NOTICE file distributed with
6    * this work for additional information regarding copyright ownership.
7    * The ASF licenses this file to You under the Apache License, Version 2.0
8    * (the "License"); you may not use this file except in compliance with
9    * the License.  You may obtain a copy of the License at
10   *
11   *      http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  
20  import java.io.IOException;
21  import java.io.InputStream;
22  
23  /**
24   * Interface for verifying data signed with OpenPGP.
25   *
26   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
27   * @todo perhaps should have different interface methods for the default key
28   * @todo should the exception be a verification exception instead of a common one?
29   */
30  public interface OpenPgpSignatureVerifier
31  {
32      String ROLE = OpenPgpSignatureVerifier.class.getName();
33  
34      /**
35       * Verify a piece of data that was signed with OpenPGP.
36       *
37       * @param data    the data that was signed
38       * @param keyRing the keyring containing the key used to sign the data
39       */
40      SignatureStatus verifySignature( InputStream data, KeyRing keyRing )
41          throws OpenPgpException, UnknownKeyException;
42  
43      /**
44       * Verify a piece of data against a detached signature.
45       *
46       * @param data         the data to that was signed
47       * @param signature    the detached signature to verify against the data
48       * @param keyRing      the keyring containing the key used to sign the data
49       */
50      SignatureStatus verifyDetachedSignature( InputStream data, InputStream signature, KeyRing keyRing )
51          throws OpenPgpException, UnknownKeyException, IOException;
52  }