1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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  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).
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  23 
  24 /**
  25  * @test
  26  * @bug 4856966
  27  * @summary basic test of SHA1withDSA and RawDSA signing/verifying
  28  * @author Andreas Sterbenz
  29  * @library ..

  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 extends PKCS11Test {
  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         main(new TestDSA());
 105     }
 106 
 107     public void main(Provider provider) throws Exception {
 108         long start = System.currentTimeMillis();
 109 
 110         System.out.println("Testing provider " + provider + "...");
 111 
 112         if (provider.getService("Signature", "SHA1withDSA") == null) {
 113             System.out.println("DSA not supported, skipping");
 114             return;
 115         }
 116 
 117         KeyFactory kf = KeyFactory.getInstance("DSA", provider);
 118         DSAPrivateKeySpec privSpec = new DSAPrivateKeySpec(x, p, q, g);
 119         DSAPublicKeySpec pubSpec = new DSAPublicKeySpec(y, p, q, g);
 120         PrivateKey privateKey = kf.generatePrivate(privSpec);
 121         PublicKey publicKey = kf.generatePublic(pubSpec);
 122 
 123         // verify known-good and known-bad signatures using SHA1withDSA and RawDSA
 124         verify(provider, "SHA1withDSA", publicKey, data1Raw, sig1a, true);
 125         verify(provider, "SHA1withDSA", publicKey, data1Raw, sig1b, true);
 126         verify(provider, "SHA1withDSA", publicKey, data2Raw, sig1a, false);
 127         verify(provider, "SHA1withDSA", publicKey, data2Raw, sig1b, false);
 128 
 129         verify(provider, "RawDSA", publicKey, data1SHA, sig1a, true);
 130         verify(provider, "RawDSA", publicKey, data1SHA, sig1b, true);
 131         verify(provider, "RawDSA", publicKey, data2SHA, sig1a, false);
 132         verify(provider, "RawDSA", publicKey, data2SHA, sig1b, false);
 133 
 134         testSigning(provider, privateKey, publicKey);
 135 
 136         long stop = System.currentTimeMillis();
 137         System.out.println("All tests passed (" + (stop - start) + " ms).");
 138     }
 139 
 140     private void testSigning(Provider provider, PrivateKey privateKey,
 141             PublicKey publicKey) throws Exception {
 142         byte[] data = new byte[2048];
 143         new Random().nextBytes(data);
 144 
 145         // sign random data using SHA1withDSA and verify using
 146         // SHA1withDSA and RawDSA
 147         Signature s = Signature.getInstance("SHA1withDSA", provider);
 148         s.initSign(privateKey);
 149         s.update(data);
 150         byte[] s1 = s.sign();
 151 
 152         s.initVerify(publicKey);
 153         s.update(data);
 154         if (!s.verify(s1)) {
 155             throw new Exception("Sign/verify 1 failed");
 156         }
 157 
 158         s = Signature.getInstance("RawDSA", provider);
 159         MessageDigest md = MessageDigest.getInstance("SHA-1");
 160         byte[] digest = md.digest(data);
 161         s.initVerify(publicKey);
 162         s.update(digest);
 163         if (!s.verify(s1)) {
 164             throw new Exception("Sign/verify 2 failed");
 165         }
 166 
 167         // sign random data using RawDSA and verify using
 168         // SHA1withDSA and RawDSA
 169         s.initSign(privateKey);
 170         s.update(digest);
 171         byte[] s2 = s.sign();
 172 
 173         s.initVerify(publicKey);
 174         s.update(digest);
 175         if (!s.verify(s2)) {
 176             throw new Exception("Sign/verify 3 failed");
 177         }
 178 
 179         s = Signature.getInstance("SHA1withDSA", provider);
 180         s.initVerify(publicKey);
 181         s.update(data);
 182         if (!s.verify(s2)) {
 183             throw new Exception("Sign/verify 4 failed");
 184         }
 185 
 186         // test behavior if data of incorrect length is passed
 187         s = Signature.getInstance("RawDSA", provider);
 188         s.initSign(privateKey);
 189         s.update(new byte[8]);
 190         s.update(new byte[64]);
 191         try {
 192             s.sign();
 193             throw new Exception("No error RawDSA signing long data");
 194         } catch (SignatureException e) {
 195             // expected
 196         }
 197     }
 198 
 199     private final static char[] hexDigits = "0123456789abcdef".toCharArray();
 200 
 201     public static String toString(byte[] b) {
 202         StringBuffer sb = new StringBuffer(b.length * 3);
 203         for (int i = 0; i < b.length; i++) {
 204             int k = b[i] & 0xff;
 205             if (i != 0) {
 206                 sb.append(':');
 207             }
 208             sb.append(hexDigits[k >>> 4]);
 209             sb.append(hexDigits[k & 0xf]);
 210         }
 211         return sb.toString();
 212     }
 213 
 214     public static byte[] parse(String s) {
 215         try {
 216             int n = s.length();
 217             ByteArrayOutputStream out = new ByteArrayOutputStream(n / 3);
 218             StringReader r = new StringReader(s);
 219             while (true) {
 220                 int b1 = nextNibble(r);
 221                 if (b1 < 0) {
 222                     break;
 223                 }
 224                 int b2 = nextNibble(r);
 225                 if (b2 < 0) {
 226                     throw new RuntimeException("Invalid string " + s);
 227                 }
 228                 int b = (b1 << 4) | b2;
 229                 out.write(b);
 230             }
 231             return out.toByteArray();
 232         } catch (IOException e) {
 233             throw new RuntimeException(e);
 234         }
 235     }
 236 
 237     public static byte[] b(String s) {
 238         return parse(s);
 239     }
 240 
 241     private static int nextNibble(StringReader r) throws IOException {
 242         while (true) {
 243             int ch = r.read();
 244             if (ch == -1) {
 245                 return -1;
 246             } else if ((ch >= '0') && (ch <= '9')) {
 247                 return ch - '0';
 248             } else if ((ch >= 'a') && (ch <= 'f')) {
 249                 return ch - 'a' + 10;
 250             } else if ((ch >= 'A') && (ch <= 'F')) {
 251                 return ch - 'A' + 10;
 252             }
 253         }
 254     }
 255 
 256 }
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