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
|
package org.bouncycastle.jcajce.provider.asymmetric.dsa;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.DSAPublicKey;
import java.security.spec.DSAPrivateKeySpec;
import java.security.spec.DSAPublicKeySpec;
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.crypto.CipherParameters;
import org.bouncycastle.crypto.params.DSAParameters;
import org.bouncycastle.crypto.params.DSAPrivateKeyParameters;
import org.bouncycastle.crypto.params.DSAPublicKeyParameters;
// Android-removed: Unsupported algorithms
// import org.bouncycastle.crypto.util.OpenSSHPrivateKeyUtil;
// import org.bouncycastle.crypto.util.OpenSSHPublicKeyUtil;
import org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi;
// Android-removed: Unsupported algorithms
// import org.bouncycastle.jce.spec.OpenSSHPrivateKeySpec;
// import org.bouncycastle.jce.spec.OpenSSHPublicKeySpec;
public class KeyFactorySpi
extends BaseKeyFactorySpi
{
public KeyFactorySpi()
{
}
protected KeySpec engineGetKeySpec(
Key key,
Class spec)
throws InvalidKeySpecException
{
if (spec.isAssignableFrom(DSAPublicKeySpec.class) && key instanceof DSAPublicKey)
{
DSAPublicKey k = (DSAPublicKey)key;
return new DSAPublicKeySpec(k.getY(), k.getParams().getP(), k.getParams().getQ(), k.getParams().getG());
}
else if (spec.isAssignableFrom(DSAPrivateKeySpec.class) && key instanceof java.security.interfaces.DSAPrivateKey)
{
java.security.interfaces.DSAPrivateKey k = (java.security.interfaces.DSAPrivateKey)key;
return new DSAPrivateKeySpec(k.getX(), k.getParams().getP(), k.getParams().getQ(), k.getParams().getG());
}
// BEGIN Android-removed: Unsupported algorithms
/*
else if (spec.isAssignableFrom(OpenSSHPublicKeySpec.class) && key instanceof java.security.interfaces.DSAPublicKey)
{
DSAPublicKey k = (DSAPublicKey)key;
try
{
return new OpenSSHPublicKeySpec(OpenSSHPublicKeyUtil.encodePublicKey(new DSAPublicKeyParameters(k.getY(), new DSAParameters(k.getParams().getP(), k.getParams().getQ(), k.getParams().getG()))));
}
catch (IOException e)
{
throw new IllegalArgumentException("unable to produce encoding: " + e.getMessage());
}
}
else if (spec.isAssignableFrom(OpenSSHPrivateKeySpec.class) && key instanceof java.security.interfaces.DSAPrivateKey)
{
DSAPrivateKey k = (DSAPrivateKey)key;
try
{
return new OpenSSHPrivateKeySpec(OpenSSHPrivateKeyUtil.encodePrivateKey(new DSAPrivateKeyParameters(k.getX(), new DSAParameters(k.getParams().getP(), k.getParams().getQ(), k.getParams().getG()))));
}
catch (IOException e)
{
throw new IllegalArgumentException("unable to produce encoding: " + e.getMessage());
}
}
*/
// END Android-removed: Unsupported algorithms
return super.engineGetKeySpec(key, spec);
}
protected Key engineTranslateKey(
Key key)
throws InvalidKeyException
{
if (key instanceof DSAPublicKey)
{
return new BCDSAPublicKey((DSAPublicKey)key);
}
else if (key instanceof DSAPrivateKey)
{
return new BCDSAPrivateKey((DSAPrivateKey)key);
}
throw new InvalidKeyException("key type unknown");
}
public PrivateKey generatePrivate(PrivateKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getPrivateKeyAlgorithm().getAlgorithm();
if (DSAUtil.isDsaOid(algOid))
{
return new BCDSAPrivateKey(keyInfo);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
public PublicKey generatePublic(SubjectPublicKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getAlgorithm().getAlgorithm();
if (DSAUtil.isDsaOid(algOid))
{
return new BCDSAPublicKey(keyInfo);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
protected PrivateKey engineGeneratePrivate(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof DSAPrivateKeySpec)
{
return new BCDSAPrivateKey((DSAPrivateKeySpec)keySpec);
}
// BEGIN Android-removed: Unsupported algorithms
/*
else if (keySpec instanceof OpenSSHPrivateKeySpec)
{
CipherParameters params = OpenSSHPrivateKeyUtil.parsePrivateKeyBlob(((OpenSSHPrivateKeySpec)keySpec).getEncoded());
if (params instanceof DSAPrivateKeyParameters)
{
return engineGeneratePrivate(
new DSAPrivateKeySpec(
((DSAPrivateKeyParameters)params).getX(),
((DSAPrivateKeyParameters)params).getParameters().getP(),
((DSAPrivateKeyParameters)params).getParameters().getQ(),
((DSAPrivateKeyParameters)params).getParameters().getG()));
}
else
{
throw new IllegalArgumentException("openssh private key is not dsa privare key");
}
}
*/
// END Android-removed: Unsupported algorithms
return super.engineGeneratePrivate(keySpec);
}
protected PublicKey engineGeneratePublic(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof DSAPublicKeySpec)
{
try
{
return new BCDSAPublicKey((DSAPublicKeySpec)keySpec);
}
catch (final Exception e)
{
throw new InvalidKeySpecException("invalid KeySpec: " + e.getMessage())
{
public Throwable getCause()
{
return e;
}
};
}
}
// BEGIN Android-removed: Unsupported algorithms
/*
else if (keySpec instanceof OpenSSHPublicKeySpec)
{
CipherParameters parameters = OpenSSHPublicKeyUtil.parsePublicKey(((OpenSSHPublicKeySpec)keySpec).getEncoded());
if (parameters instanceof DSAPublicKeyParameters)
{
return engineGeneratePublic(
new DSAPublicKeySpec(((DSAPublicKeyParameters)parameters).getY(),
((DSAPublicKeyParameters)parameters).getParameters().getP(),
((DSAPublicKeyParameters)parameters).getParameters().getQ(),
((DSAPublicKeyParameters)parameters).getParameters().getG()));
}
throw new IllegalArgumentException("openssh public key is not dsa public key");
}
*/
// END Android-removed: Unsupported algorithms
return super.engineGeneratePublic(keySpec);
}
}
|
