1 /*
2  * Copyright (C) 2010 Google Inc.
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 benchmarks.regression;
18 
19 import com.google.caliper.BeforeExperiment;
20 import com.google.caliper.Param;
21 import java.security.KeyPair;
22 import java.security.KeyPairGenerator;
23 import java.security.PrivateKey;
24 import java.security.PublicKey;
25 import java.security.Signature;
26 import java.util.HashMap;
27 import java.util.Map;
28 
29 /**
30  * Tests RSA and DSA signature creation and verification.
31  */
32 public class SignatureBenchmark {
33 
34     private static final int DATA_SIZE = 8192;
35     private static final byte[] DATA = new byte[DATA_SIZE];
36     static {
37         for (int i = 0; i < DATA_SIZE; i++) {
38             DATA[i] = (byte)i;
39         }
40     }
41     @Param private Algorithm algorithm;
42 
43     public enum Algorithm {
44         MD5WithRSA,
45         SHA1WithRSA,
46         SHA256WithRSA,
47         SHA384WithRSA,
48         SHA512WithRSA,
49         SHA1withDSA
50     };
51 
52     @Param private Implementation implementation;
53 
54     public enum Implementation { OpenSSL, BouncyCastle };
55 
56     // Key generation and signing aren't part of the benchmark for verification
57     // so cache the results
58     private static Map<String,KeyPair> KEY_PAIRS = new HashMap<String,KeyPair>();
59     private static Map<String,byte[]> SIGNATURES = new HashMap<String,byte[]>();
60 
61     private String signatureAlgorithm;
62     private byte[] signature;
63     private PrivateKey privateKey;
64     private PublicKey publicKey;
65 
66     @BeforeExperiment
setUp()67     protected void setUp() throws Exception {
68         this.signatureAlgorithm = algorithm.toString();
69 
70         String keyAlgorithm = signatureAlgorithm.substring(signatureAlgorithm.length() - 3 ,
71                                                            signatureAlgorithm.length());
72         KeyPair keyPair = KEY_PAIRS.get(keyAlgorithm);
73         if (keyPair == null) {
74             KeyPairGenerator generator = KeyPairGenerator.getInstance(keyAlgorithm);
75             keyPair = generator.generateKeyPair();
76             KEY_PAIRS.put(keyAlgorithm, keyPair);
77         }
78         this.privateKey = keyPair.getPrivate();
79         this.publicKey = keyPair.getPublic();
80 
81         this.signature = SIGNATURES.get(signatureAlgorithm);
82         if (this.signature == null) {
83             Signature signer = Signature.getInstance(signatureAlgorithm);
84             signer.initSign(keyPair.getPrivate());
85             signer.update(DATA);
86             this.signature = signer.sign();
87             SIGNATURES.put(signatureAlgorithm, signature);
88         }
89     }
90 
timeSign(int reps)91     public void timeSign(int reps) throws Exception {
92         for (int i = 0; i < reps; ++i) {
93             Signature signer;
94             switch (implementation) {
95                 case OpenSSL:
96                     signer = Signature.getInstance(signatureAlgorithm, "AndroidOpenSSL");
97                     break;
98                 case BouncyCastle:
99                     signer = Signature.getInstance(signatureAlgorithm, "BC");
100                     break;
101                 default:
102                     throw new RuntimeException(implementation.toString());
103             }
104             signer.initSign(privateKey);
105             signer.update(DATA);
106             signer.sign();
107         }
108     }
109 
timeVerify(int reps)110     public void timeVerify(int reps) throws Exception {
111         for (int i = 0; i < reps; ++i) {
112             Signature verifier;
113             switch (implementation) {
114                 case OpenSSL:
115                     verifier = Signature.getInstance(signatureAlgorithm, "AndroidOpenSSL");
116                     break;
117                 case BouncyCastle:
118                     verifier = Signature.getInstance(signatureAlgorithm, "BC");
119                     break;
120                 default:
121                     throw new RuntimeException(implementation.toString());
122             }
123             verifier.initVerify(publicKey);
124             verifier.update(DATA);
125             verifier.verify(signature);
126         }
127     }
128 }
129