1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
package org.spongycastle.jce.provider.test;
import java.math.BigInteger;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.SecureRandom;
import java.security.Security;
import javax.crypto.Cipher;
import javax.crypto.interfaces.DHPrivateKey;
import javax.crypto.interfaces.DHPublicKey;
import javax.crypto.spec.DHParameterSpec;
import org.spongycastle.crypto.agreement.DHBasicAgreement;
import org.spongycastle.crypto.digests.SHA1Digest;
import org.spongycastle.crypto.engines.DESEngine;
import org.spongycastle.crypto.engines.IESEngine;
import org.spongycastle.crypto.generators.KDF2BytesGenerator;
import org.spongycastle.crypto.macs.HMac;
import org.spongycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.spongycastle.jce.provider.BouncyCastleProvider;
import org.spongycastle.jcajce.provider.asymmetric.dh.IESCipher;
import org.spongycastle.jce.spec.IESParameterSpec;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.SimpleTest;
/**
* Test for DHIES - Diffie-Hellman Integrated Encryption Scheme
*/
public class DHIESTest
extends SimpleTest
{
// Oakley group 2 - RFC 5996
BigInteger p1024 = new BigInteger(
"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
"29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381" +
"FFFFFFFFFFFFFFFF",16);
BigInteger g1024 = new BigInteger("2",16);
DHParameterSpec param = new DHParameterSpec(p1024, g1024);
DHIESTest()
{
}
public String getName()
{
return "DHIES";
}
public void performTest()
throws Exception
{
byte[] derivation = Hex.decode("202122232425262728292a2b2c2d2e2f");
byte[] encoding = Hex.decode("303132333435363738393a3b3c3d3e3f");
IESCipher c1 = new org.spongycastle.jcajce.provider.asymmetric.dh.IESCipher.IES();
IESCipher c2 = new org.spongycastle.jcajce.provider.asymmetric.dh.IESCipher.IES();
IESParameterSpec params = new IESParameterSpec(derivation,encoding,128);
// Testing DHIES with default prime in streaming mode
KeyPairGenerator g = KeyPairGenerator.getInstance("DH", "SC");
g.initialize(param);
doTest("DHIES with default", g, "DHIES", params);
// Testing DHIES with 512-bit prime in streaming mode
g.initialize(512, new SecureRandom());
doTest("DHIES with 512-bit", g, "DHIES", params);
// Testing ECIES with 1024-bit prime in streaming mode
g.initialize(1024, new SecureRandom());
doTest("DHIES with 1024-bit", g, "DHIES", params);
c1 = new IESCipher(new IESEngine(new DHBasicAgreement(),
new KDF2BytesGenerator(new SHA1Digest()),
new HMac(new SHA1Digest()),
new PaddedBufferedBlockCipher(new DESEngine())));
c2 = new IESCipher(new IESEngine(new DHBasicAgreement(),
new KDF2BytesGenerator(new SHA1Digest()),
new HMac(new SHA1Digest()),
new PaddedBufferedBlockCipher(new DESEngine())));
params = new IESParameterSpec(derivation, encoding, 128, 192);
// Testing DHIES with default prime using DESEDE
g = KeyPairGenerator.getInstance("DH", "SC");
doTest("DHIESwithDES default", g, "DHIESwithDESEDE", params);
// Testing DHIES with 512-bit prime using DESEDE
g.initialize(512, new SecureRandom());
doTest("DHIESwithDES 512-bit", g, "DHIESwithDESEDE", params);
// Testing DHIES with 1024-bit prime using DESEDE
g.initialize(1024, new SecureRandom());
doTest("DHIESwithDES 1024-bit", g, "DHIESwithDESEDE", params);
g = KeyPairGenerator.getInstance("DH", "SC");
g.initialize(param);
c1 = new IESCipher.IESwithAES();
c2 = new IESCipher.IESwithAES();
params = new IESParameterSpec(derivation, encoding, 128, 128);
// Testing DHIES with default curve using AES
doTest("DHIESwithAES default", g, "DHIESwithAES", params);
// Testing DHIES with 512-bit curve using AES
g.initialize(512, new SecureRandom());
doTest("DHIESwithAES 512-bit", g, "DHIESwithAES", params);
// Testing DHIES with 1024-bit curve using AES
g.initialize(1024, new SecureRandom());
doTest("DHIESwithAES 1024-bit", g, "DHIESwithAES", params);
}
public void doTest(
String testname,
KeyPairGenerator g,
String cipher,
IESParameterSpec p)
throws Exception
{
byte[] message = Hex.decode("0102030405060708090a0b0c0d0e0f10111213141516");
byte[] out1, out2;
Cipher c1 = Cipher.getInstance(cipher, "SC");
Cipher c2 = Cipher.getInstance(cipher, "SC");
// Generate static key pair
KeyPair keyPair = g.generateKeyPair();
DHPublicKey pub = (DHPublicKey)keyPair.getPublic();
DHPrivateKey priv = (DHPrivateKey)keyPair.getPrivate();
// Testing with null parameters and DHAES mode off
c1.init(Cipher.ENCRYPT_MODE, pub, new SecureRandom());
c2.init(Cipher.DECRYPT_MODE, priv, new SecureRandom());
out1 = c1.doFinal(message, 0, message.length);
out2 = c2.doFinal(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail(testname + " test failed with null parameters, DHAES mode false.");
}
// Testing with given parameters and DHAES mode off
c1.init(Cipher.ENCRYPT_MODE, pub, p, new SecureRandom());
c2.init(Cipher.DECRYPT_MODE, priv, p, new SecureRandom());
out1 = c1.doFinal(message, 0, message.length);
out2 = c2.doFinal(out1, 0, out1.length);
if (!areEqual(out2, message))
fail(testname + " test failed with non-null parameters, DHAES mode false.");
// Testing with null parameters and DHAES mode on
c1 = Cipher.getInstance(cipher + "/DHAES/PKCS7Padding","SC");
c2 = Cipher.getInstance(cipher + "/DHAES/PKCS7Padding","SC");
c1.init(Cipher.ENCRYPT_MODE, pub, new SecureRandom());
c2.init(Cipher.DECRYPT_MODE, priv, new SecureRandom());
out1 = c1.doFinal(message, 0, message.length);
out2 = c2.doFinal(out1, 0, out1.length);
if (!areEqual(out2, message))
fail(testname + " test failed with null parameters, DHAES mode true.");
// Testing with given parameters and DHAES mode on
c1 = Cipher.getInstance(cipher + "/DHAES/PKCS7Padding","SC");
c2 = Cipher.getInstance(cipher + "/DHAES/PKCS7Padding","SC");
c1.init(Cipher.ENCRYPT_MODE, pub, p, new SecureRandom());
c2.init(Cipher.DECRYPT_MODE, priv, p, new SecureRandom());
out1 = c1.doFinal(message, 0, message.length);
out2 = c2.doFinal(out1, 0, out1.length);
if (!areEqual(out2, message))
fail(testname + " test failed with non-null parameters, DHAES mode true.");
}
public static void main(
String[] args)
{
Security.addProvider(new BouncyCastleProvider());
runTest(new DHIESTest());
}
}
|
