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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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7 * published by the Free Software Foundation.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * accompanied this code).
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23
24 /**
25 * @test
26 * @bug 4856966
27 * @summary Verify that the RSA KeyPairGenerator works
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.interfaces.*;
38 import java.security.spec.*;
39
40 public class TestKeyPairGenerator extends PKCS11Test {
41
42 private static Provider provider;
43
44 private static byte[] data;
45
46 private static void testSignature(String algorithm, PrivateKey privateKey, PublicKey publicKey) throws Exception {
47 System.out.println("Testing " + algorithm + "...");
48 Signature s = Signature.getInstance(algorithm, provider);
49 s.initSign(privateKey);
50 s.update(data);
51 byte[] sig = s.sign();
52 s.initVerify(publicKey);
53 s.update(data);
54 boolean result = s.verify(sig);
55 if (result == false) {
56 throw new Exception("Verification failed");
57 }
58 }
59
60 private static void test(PrivateKey privateKey, PublicKey publicKey) throws Exception {
61 testSignature("MD2withRSA", privateKey, publicKey);
62 testSignature("MD5withRSA", privateKey, publicKey);
63 testSignature("SHA1withRSA", privateKey, publicKey);
64 testSignature("SHA224withRSA", privateKey, publicKey);
65 testSignature("SHA256withRSA", privateKey, publicKey);
66 RSAPublicKey rsaKey = (RSAPublicKey)publicKey;
67 if (rsaKey.getModulus().bitLength() > 512) {
68 // for SHA384 and SHA512 the data is too long for 512 bit keys
69 testSignature("SHA384withRSA", privateKey, publicKey);
70 testSignature("SHA512withRSA", privateKey, publicKey);
71 }
72 }
73
74 // regression test for 4865198
75 private static void testInvalidSignature(KeyPair kp1, KeyPair kp2) throws Exception {
76 System.out.println("Testing signature with incorrect key...");
77 Signature sig = Signature.getInstance("MD5withRSA", provider);
78 sig.initSign(kp1.getPrivate());
79 byte[] data = new byte[100];
80 sig.update(data);
81 byte[] signature = sig.sign();
82 sig.initVerify(kp1.getPublic());
83 sig.update(data);
84 if (sig.verify(signature) == false) {
85 throw new Exception("verification failed");
86 }
87 sig.initVerify(kp2.getPublic());
88 sig.update(data);
89 // verify needs to return false and not throw an Exception
90 if (sig.verify(signature)) {
91 throw new Exception("verification unexpectedly succeeded");
92 }
93 }
94
95 public static void main(String[] args) throws Exception {
96 main(new TestKeyPairGenerator());
97 }
98
99 public void main(Provider p) throws Exception {
100 long start = System.currentTimeMillis();
101 provider = p;
102 data = new byte[2048];
103 // keypair generation is very slow, test only a few short keys
104 int[] keyLengths = {512, 512, 1024};
105 BigInteger[] pubExps = {null, BigInteger.valueOf(3), null};
106 KeyPair[] keyPairs = new KeyPair[3];
107 new Random().nextBytes(data);
108 KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", provider);
109 for (int i = 0; i < keyLengths.length; i++) {
110 int len = keyLengths[i];
111 BigInteger exp = pubExps[i];
112 System.out.println("Generating " + len + " bit keypair...");
113 if (exp == null) {
114 kpg.initialize(len);
115 } else {
116 kpg.initialize(new RSAKeyGenParameterSpec(len, exp));
117 }
118 KeyPair kp = kpg.generateKeyPair();
119 keyPairs[i] = kp;
120 RSAPublicKey publicKey = (RSAPublicKey)kp.getPublic();
121 System.out.println(publicKey);
122 RSAPrivateCrtKey privateKey = (RSAPrivateCrtKey)kp.getPrivate();
123 if (publicKey.getModulus().equals(privateKey.getModulus()) == false) {
124 throw new Exception("Moduli do not match");
125 }
126 if (publicKey.getPublicExponent().equals(privateKey.getPublicExponent()) == false) {
127 throw new Exception("Exponents do not match");
128 }
129 int keyLen = publicKey.getModulus().bitLength();
130 if ((keyLen > len) || (keyLen < len - 1)) {
131 throw new Exception("Incorrect key length: " + keyLen);
132 }
133 if (exp != null) {
134 if (exp.equals(publicKey.getPublicExponent()) == false) {
135 throw new Exception("Incorrect exponent");
136 }
137 }
138 test(privateKey, publicKey);
139 }
140 testInvalidSignature(keyPairs[0], keyPairs[1]);
141 testInvalidSignature(keyPairs[0], keyPairs[2]);
142 long stop = System.currentTimeMillis();
143 System.out.println("All tests passed (" + (stop - start) + " ms).");
144 }
145 }