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
|
package org.bouncycastle.jcajce.provider.asymmetric.ec;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.interfaces.ECPrivateKey;
import java.security.interfaces.ECPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi;
import org.bouncycastle.jcajce.provider.asymmetric.util.EC5Util;
import org.bouncycastle.jcajce.provider.config.ProviderConfiguration;
import org.bouncycastle.jcajce.provider.util.AsymmetricKeyInfoConverter;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.jce.spec.ECParameterSpec;
import org.bouncycastle.jce.spec.ECPrivateKeySpec;
import org.bouncycastle.jce.spec.ECPublicKeySpec;
public class KeyFactorySpi
extends BaseKeyFactorySpi
implements AsymmetricKeyInfoConverter
{
String algorithm;
ProviderConfiguration configuration;
KeyFactorySpi(
String algorithm,
ProviderConfiguration configuration)
{
this.algorithm = algorithm;
this.configuration = configuration;
}
protected Key engineTranslateKey(
Key key)
throws InvalidKeyException
{
if (key instanceof ECPublicKey)
{
return new BCECPublicKey((ECPublicKey)key, configuration);
}
else if (key instanceof ECPrivateKey)
{
return new BCECPrivateKey((ECPrivateKey)key, configuration);
}
throw new InvalidKeyException("key type unknown");
}
protected KeySpec engineGetKeySpec(
Key key,
Class spec)
throws InvalidKeySpecException
{
if (spec.isAssignableFrom(java.security.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey)
{
ECPublicKey k = (ECPublicKey)key;
if (k.getParams() != null)
{
return new java.security.spec.ECPublicKeySpec(k.getW(), k.getParams());
}
else
{
ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
return new java.security.spec.ECPublicKeySpec(k.getW(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec));
}
}
else if (spec.isAssignableFrom(java.security.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey)
{
ECPrivateKey k = (ECPrivateKey)key;
if (k.getParams() != null)
{
return new java.security.spec.ECPrivateKeySpec(k.getS(), k.getParams());
}
else
{
ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
return new java.security.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec));
}
}
else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey)
{
ECPublicKey k = (ECPublicKey)key;
if (k.getParams() != null)
{
return new org.bouncycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), EC5Util.convertSpec(k.getParams(), false));
}
else
{
ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
return new org.bouncycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), implicitSpec);
}
}
else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey)
{
ECPrivateKey k = (ECPrivateKey)key;
if (k.getParams() != null)
{
return new org.bouncycastle.jce.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(k.getParams(), false));
}
else
{
ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
return new org.bouncycastle.jce.spec.ECPrivateKeySpec(k.getS(), implicitSpec);
}
}
return super.engineGetKeySpec(key, spec);
}
protected PrivateKey engineGeneratePrivate(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof ECPrivateKeySpec)
{
return new BCECPrivateKey(algorithm, (ECPrivateKeySpec)keySpec, configuration);
}
else if (keySpec instanceof java.security.spec.ECPrivateKeySpec)
{
return new BCECPrivateKey(algorithm, (java.security.spec.ECPrivateKeySpec)keySpec, configuration);
}
return super.engineGeneratePrivate(keySpec);
}
protected PublicKey engineGeneratePublic(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof ECPublicKeySpec)
{
return new BCECPublicKey(algorithm, (ECPublicKeySpec)keySpec, configuration);
}
else if (keySpec instanceof java.security.spec.ECPublicKeySpec)
{
return new BCECPublicKey(algorithm, (java.security.spec.ECPublicKeySpec)keySpec, configuration);
}
return super.engineGeneratePublic(keySpec);
}
public PrivateKey generatePrivate(PrivateKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getPrivateKeyAlgorithm().getAlgorithm();
if (algOid.equals(X9ObjectIdentifiers.id_ecPublicKey))
{
return new BCECPrivateKey(algorithm, keyInfo, configuration);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
public PublicKey generatePublic(SubjectPublicKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getAlgorithm().getAlgorithm();
if (algOid.equals(X9ObjectIdentifiers.id_ecPublicKey))
{
return new BCECPublicKey(algorithm, keyInfo, configuration);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
public static class EC
extends KeyFactorySpi
{
public EC()
{
super("EC", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECDSA
extends KeyFactorySpi
{
public ECDSA()
{
super("ECDSA", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECGOST3410
extends KeyFactorySpi
{
public ECGOST3410()
{
super("ECGOST3410", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECDH
extends KeyFactorySpi
{
public ECDH()
{
super("ECDH", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECDHC
extends KeyFactorySpi
{
public ECDHC()
{
super("ECDHC", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECMQV
extends KeyFactorySpi
{
public ECMQV()
{
super("ECMQV", BouncyCastleProvider.CONFIGURATION);
}
}
}
|
