1 /*
   2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 4815057 4839277
  27  * @summary basic test of SHA1withDSA and RawDSA signing/verifying
  28  * @author Andreas Sterbenz
  29  * @key randomness
  30  */
  31 
  32 import java.io.*;
  33 import java.util.*;
  34 import java.math.BigInteger;
  35 
  36 import java.security.*;
  37 import java.security.spec.*;
  38 
  39 public class TestDSA {
  40 
  41     // values of the keys we use for the tests
  42 
  43     private final static String ps =
  44         "fd7f53811d75122952df4a9c2eece4e7f611b7523cef4400c31e3f80b6512669" +
  45         "455d402251fb593d8d58fabfc5f5ba30f6cb9b556cd7813b801d346ff26660b7" +
  46         "6b9950a5a49f9fe8047b1022c24fbba9d7feb7c61bf83b57e7c6a8a6150f04fb" +
  47         "83f6d3c51ec3023554135a169132f675f3ae2b61d72aeff22203199dd14801c7";
  48 
  49     private final static String qs =
  50         "9760508f15230bccb292b982a2eb840bf0581cf5";
  51 
  52     private final static String gs =
  53         "f7e1a085d69b3ddecbbcab5c36b857b97994afbbfa3aea82f9574c0b3d078267" +
  54         "5159578ebad4594fe67107108180b449167123e84c281613b7cf09328cc8a6e1" +
  55         "3c167a8b547c8d28e0a3ae1e2bb3a675916ea37f0bfa213562f1fb627a01243b" +
  56         "cca4f1bea8519089a883dfe15ae59f06928b665e807b552564014c3bfecf492a";
  57 
  58     private final static String xs =
  59         "2952afd9aef9527f9b40d23c8916f7d046028f9d";
  60 
  61     private final static String ys =
  62         "b16ddb0f9394c328c983ecf23b20014ace368a1af5728dffbf1162de9ed8ebf6" +
  63         "384f323930e091503035caa797e3674221fc16136240b5474799ede2b7b11313" +
  64         "7574a9c26bcf900940027b4bcd511ef1d1daf2e69c416aebaf3bdf39f02473b9" +
  65         "d963f99414c09d97bb0830d9fbdcf7bb9dad8a2179fcdf296838c4cfab8f4d8f";
  66 
  67     private final static BigInteger p = new BigInteger(ps, 16);
  68     private final static BigInteger q = new BigInteger(qs, 16);
  69     private final static BigInteger g = new BigInteger(gs, 16);
  70     private final static BigInteger x = new BigInteger(xs, 16);
  71     private final static BigInteger y = new BigInteger(ys, 16);
  72 
  73     // data for test 1, original and SHA-1 hashed
  74     private final static byte[] data1Raw = b("0102030405060708090a0b0c0d0e0f10111213");
  75     private final static byte[] data1SHA = b("00:e2:5f:c9:1c:8f:d6:8c:6a:dc:c6:bd:f0:46:60:5e:a2:cd:8d:ad");
  76 
  77     // valid signatures of data1. sig1b uses incorrect ASN.1 encoding,
  78     // which we want to accept anyway for compatibility
  79     private final static byte[] sig1a = b("30:2d:02:14:53:06:3f:7d:ec:48:3c:99:17:9a:2c:a9:4d:e8:00:da:70:fb:35:d7:02:15:00:92:6a:39:6b:15:63:2f:e7:32:90:35:bf:af:47:55:e7:ff:33:a5:13");
  80     private final static byte[] sig1b = b("30:2c:02:14:53:06:3f:7d:ec:48:3c:99:17:9a:2c:a9:4d:e8:00:da:70:fb:35:d7:02:14:92:6a:39:6b:15:63:2f:e7:32:90:35:bf:af:47:55:e7:ff:33:a5:13");
  81 
  82     // data for test 2 (invalid signatures)
  83     private final static byte[] data2Raw = {};
  84     private final static byte[] data2SHA = b("da:39:a3:ee:5e:6b:4b:0d:32:55:bf:ef:95:60:18:90:af:d8:07:09");
  85 
  86     private static void verify(Provider provider, String alg, PublicKey key, byte[] data, byte[] sig, boolean result) throws Exception {
  87         Signature s = Signature.getInstance(alg, provider);
  88         s.initVerify(key);
  89         boolean r;
  90         s.update(data);
  91         r = s.verify(sig);
  92         if (r != result) {
  93             throw new Exception("Result mismatch, actual: " + r);
  94         }
  95         s.update(data);
  96         r = s.verify(sig);
  97         if (r != result) {
  98             throw new Exception("Result mismatch, actual: " + r);
  99         }
 100         System.out.println("Passed");
 101     }
 102 
 103     public static void main(String[] args) throws Exception {
 104         long start = System.currentTimeMillis();
 105 
 106         Provider provider = Security.getProvider("SUN");
 107         System.out.println("Testing provider " + provider + "...");
 108 
 109         KeyFactory kf = KeyFactory.getInstance("DSA", provider);
 110         DSAPrivateKeySpec privSpec = new DSAPrivateKeySpec(x, p, q, g);
 111         DSAPublicKeySpec pubSpec = new DSAPublicKeySpec(y, p, q, g);
 112         PrivateKey privateKey = kf.generatePrivate(privSpec);
 113         PublicKey publicKey = kf.generatePublic(pubSpec);
 114 
 115         // verify known-good and known-bad signatures using SHA1withDSA and RawDSA
 116         verify(provider, "SHA1withDSA", publicKey, data1Raw, sig1a, true);
 117         verify(provider, "SHA1withDSA", publicKey, data1Raw, sig1b, true);
 118         verify(provider, "SHA1withDSA", publicKey, data2Raw, sig1a, false);
 119         verify(provider, "SHA1withDSA", publicKey, data2Raw, sig1b, false);
 120 
 121         verify(provider, "RawDSA", publicKey, data1SHA, sig1a, true);
 122         verify(provider, "RawDSA", publicKey, data1SHA, sig1b, true);
 123         verify(provider, "RawDSA", publicKey, data2SHA, sig1a, false);
 124         verify(provider, "RawDSA", publicKey, data2SHA, sig1b, false);
 125 
 126         byte[] data = new byte[2048];
 127         new Random().nextBytes(data);
 128 
 129         // sign random data using SHA1withDSA and verify using
 130         // SHA1withDSA and RawDSA
 131         Signature s = Signature.getInstance("SHA1withDSA", provider);
 132         s.initSign(privateKey);
 133         s.update(data);
 134         byte[] s1 = s.sign();
 135 
 136         s.initVerify(publicKey);
 137         s.update(data);
 138         if (!s.verify(s1)) {
 139             throw new Exception("Sign/verify 1 failed");
 140         }
 141 
 142         s = Signature.getInstance("RawDSA", provider);
 143         MessageDigest md = MessageDigest.getInstance("SHA-1");
 144         byte[] digest = md.digest(data);
 145         s.initVerify(publicKey);
 146         s.update(digest);
 147         if (!s.verify(s1)) {
 148             throw new Exception("Sign/verify 2 failed");
 149         }
 150 
 151         // sign random data using RawDSA and verify using
 152         // SHA1withDSA and RawDSA
 153         s.initSign(privateKey);
 154         s.update(digest);
 155         byte[] s2 = s.sign();
 156 
 157         s.initVerify(publicKey);
 158         s.update(digest);
 159         if (!s.verify(s2)) {
 160             throw new Exception("Sign/verify 3 failed");
 161         }
 162 
 163         s = Signature.getInstance("SHA1withDSA", provider);
 164         s.initVerify(publicKey);
 165         s.update(data);
 166         if (!s.verify(s2)) {
 167             throw new Exception("Sign/verify 4 failed");
 168         }
 169 
 170         // test behavior if data of incorrect length is passed
 171         s = Signature.getInstance("RawDSA", provider);
 172         s.initSign(privateKey);
 173         s.update(new byte[8]);
 174         s.update(new byte[64]);
 175         try {
 176             s.sign();
 177             throw new Exception("No error RawDSA signing long data");
 178         } catch (SignatureException e) {
 179             // expected
 180         }
 181 
 182         long stop = System.currentTimeMillis();
 183         System.out.println("All tests passed (" + (stop - start) + " ms).");
 184     }
 185 
 186     private final static char[] hexDigits = "0123456789abcdef".toCharArray();
 187 
 188     public static String toString(byte[] b) {
 189         StringBuffer sb = new StringBuffer(b.length * 3);
 190         for (int i = 0; i < b.length; i++) {
 191             int k = b[i] & 0xff;
 192             if (i != 0) {
 193                 sb.append(':');
 194             }
 195             sb.append(hexDigits[k >>> 4]);
 196             sb.append(hexDigits[k & 0xf]);
 197         }
 198         return sb.toString();
 199     }
 200 
 201     public static byte[] parse(String s) {
 202         try {
 203             int n = s.length();
 204             ByteArrayOutputStream out = new ByteArrayOutputStream(n / 3);
 205             StringReader r = new StringReader(s);
 206             while (true) {
 207                 int b1 = nextNibble(r);
 208                 if (b1 < 0) {
 209                     break;
 210                 }
 211                 int b2 = nextNibble(r);
 212                 if (b2 < 0) {
 213                     throw new RuntimeException("Invalid string " + s);
 214                 }
 215                 int b = (b1 << 4) | b2;
 216                 out.write(b);
 217             }
 218             return out.toByteArray();
 219         } catch (IOException e) {
 220             throw new RuntimeException(e);
 221         }
 222     }
 223 
 224     public static byte[] b(String s) {
 225         return parse(s);
 226     }
 227 
 228     private static int nextNibble(StringReader r) throws IOException {
 229         while (true) {
 230             int ch = r.read();
 231             if (ch == -1) {
 232                 return -1;
 233             } else if ((ch >= '0') && (ch <= '9')) {
 234                 return ch - '0';
 235             } else if ((ch >= 'a') && (ch <= 'f')) {
 236                 return ch - 'a' + 10;
 237             } else if ((ch >= 'A') && (ch <= 'F')) {
 238                 return ch - 'A' + 10;
 239             }
 240         }
 241     }
 242 
 243 }