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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
package org.spongycastle.jce.provider.test;
import java.math.BigInteger;
import java.security.AlgorithmParameters;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Security;
import javax.crypto.Cipher;
import javax.crypto.spec.DHParameterSpec;
import org.spongycastle.jce.provider.BouncyCastleProvider;
import org.spongycastle.jce.spec.ECParameterSpec;
import org.spongycastle.jce.spec.IEKeySpec;
import org.spongycastle.jce.spec.IESParameterSpec;
import org.spongycastle.math.ec.ECCurve;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.SimpleTest;
/**
* test for ECIES - Elliptic Curve Integrated Encryption Scheme
*/
public class IESTest
extends SimpleTest
{
private BigInteger g512 = new BigInteger("153d5d6172adb43045b68ae8e1de1070b6137005686d29d3d73a7749199681ee5b212c9b96bfdcfa5b20cd5e3fd2044895d609cf9b410b7a0f12ca1cb9a428cc", 16);
private BigInteger p512 = new BigInteger("9494fec095f3b85ee286542b3836fc81a5dd0a0349b4c239dd38744d488cf8e31db8bcb7d33b41abb9e5a33cca9144b1cef332c94bf0573bf047a3aca98cdf3b", 16);
IESTest()
{
}
public String getName()
{
return "IES";
}
public void performTest()
throws Exception
{
KeyPairGenerator g = KeyPairGenerator.getInstance("ECIES", "SC");
ECCurve curve = new ECCurve.Fp(
new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b
ECParameterSpec ecSpec = new ECParameterSpec(
curve,
curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n
g.initialize(ecSpec, new SecureRandom());
Cipher c1 = Cipher.getInstance("ECIES", "SC");
Cipher c2 = Cipher.getInstance("ECIES", "SC");
doTest(g, c1, c2);
g = KeyPairGenerator.getInstance("ECIES", "SC");
g.initialize(192, new SecureRandom());
doTest(g, c1, c2);
g = KeyPairGenerator.getInstance("ECIES", "SC");
g.initialize(239, new SecureRandom());
doTest(g, c1, c2);
g = KeyPairGenerator.getInstance("ECIES", "SC");
g.initialize(256, new SecureRandom());
doTest(g, c1, c2);
doDefTest(g, c1, c2);
DHParameterSpec dhParams = new DHParameterSpec(p512, g512);
c1 = Cipher.getInstance("IES", "SC");
c2 = Cipher.getInstance("IES", "SC");
g = KeyPairGenerator.getInstance("DH", "SC");
g.initialize(dhParams);
doTest(g, c1, c2);
doDefTest(g, c1, c2);
}
public void doTest(
KeyPairGenerator g,
Cipher c1,
Cipher c2)
throws Exception
{
//
// a side
//
KeyPair aKeyPair = g.generateKeyPair();
PublicKey aPub = aKeyPair.getPublic();
PrivateKey aPriv = aKeyPair.getPrivate();
//
// b side
//
KeyPair bKeyPair = g.generateKeyPair();
PublicKey bPub = bKeyPair.getPublic();
PrivateKey bPriv = bKeyPair.getPrivate();
//
// stream test
//
IEKeySpec c1Key = new IEKeySpec(aPriv, bPub);
IEKeySpec c2Key = new IEKeySpec(bPriv, aPub);
byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };
IESParameterSpec param = new IESParameterSpec(d, e, 128);
c1.init(Cipher.ENCRYPT_MODE, c1Key, param);
c2.init(Cipher.DECRYPT_MODE, c2Key, param);
byte[] message = Hex.decode("1234567890abcdef");
byte[] out1 = c1.doFinal(message, 0, message.length);
byte[] out2 = c2.doFinal(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail("stream cipher test failed");
}
}
public void doDefTest(
KeyPairGenerator g,
Cipher c1,
Cipher c2)
throws Exception
{
//
// a side
//
KeyPair aKeyPair = g.generateKeyPair();
PublicKey aPub = aKeyPair.getPublic();
PrivateKey aPriv = aKeyPair.getPrivate();
//
// b side
//
KeyPair bKeyPair = g.generateKeyPair();
PublicKey bPub = bKeyPair.getPublic();
PrivateKey bPriv = bKeyPair.getPrivate();
//
// stream test
//
IEKeySpec c1Key = new IEKeySpec(aPriv, bPub);
IEKeySpec c2Key = new IEKeySpec(bPriv, aPub);
c1.init(Cipher.ENCRYPT_MODE, c1Key);
AlgorithmParameters param = c1.getParameters();
c2.init(Cipher.DECRYPT_MODE, c2Key, param);
byte[] message = Hex.decode("1234567890abcdef");
byte[] out1 = c1.doFinal(message, 0, message.length);
byte[] out2 = c2.doFinal(out1, 0, out1.length);
if (!areEqual(out2, message))
{
fail("stream cipher test failed");
}
//
// int doFinal
//
int len1 = c1.doFinal(message, 0, message.length, out1, 0);
if (len1 != out1.length)
{
fail("encryption length wrong");
}
int len2 = c2.doFinal(out1, 0, out1.length, out2, 0);
if (len2 != out2.length)
{
fail("decryption length wrong");
}
if (!areEqual(out2, message))
{
fail("stream cipher test failed");
}
//
// int doFinal with update
//
len1 = c1.update(message, 0, 2, out1, 0);
len1 += c1.doFinal(message, 2, message.length - 2, out1, len1);
if (len1 != out1.length)
{
fail("update encryption length wrong");
}
len2 = c2.update(out1, 0, 2, out2, 0);
len2 += c2.doFinal(out1, 2, out1.length - 2, out2, len2);
if (len2 != out2.length)
{
fail("update decryption length wrong");
}
if (!areEqual(out2, message))
{
fail("update stream cipher test failed");
}
}
public static void main(
String[] args)
{
Security.addProvider(new BouncyCastleProvider());
runTest(new IESTest());
}
}
|
