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
|
package org.spongycastle.openssl;
import java.io.IOException;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
import org.spongycastle.asn1.ASN1EncodableVector;
import org.spongycastle.asn1.ASN1Integer;
import org.spongycastle.asn1.ASN1ObjectIdentifier;
import org.spongycastle.asn1.DERSequence;
import org.spongycastle.asn1.cms.ContentInfo;
import org.spongycastle.asn1.oiw.OIWObjectIdentifiers;
import org.spongycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.spongycastle.asn1.pkcs.PrivateKeyInfo;
import org.spongycastle.asn1.x509.DSAParameter;
import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
import org.spongycastle.asn1.x9.X9ObjectIdentifiers;
import org.spongycastle.cert.X509AttributeCertificateHolder;
import org.spongycastle.cert.X509CRLHolder;
import org.spongycastle.cert.X509CertificateHolder;
import org.spongycastle.pkcs.PKCS10CertificationRequest;
import org.spongycastle.util.Strings;
import org.spongycastle.util.io.pem.PemGenerationException;
import org.spongycastle.util.io.pem.PemHeader;
import org.spongycastle.util.io.pem.PemObject;
import org.spongycastle.util.io.pem.PemObjectGenerator;
/**
* PEM generator for the original set of PEM objects used in Open SSL.
*/
public class MiscPEMGenerator
implements PemObjectGenerator
{
private static final ASN1ObjectIdentifier[] dsaOids =
{
X9ObjectIdentifiers.id_dsa,
OIWObjectIdentifiers.dsaWithSHA1
};
private static final byte[] hexEncodingTable =
{
(byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5', (byte)'6', (byte)'7',
(byte)'8', (byte)'9', (byte)'A', (byte)'B', (byte)'C', (byte)'D', (byte)'E', (byte)'F'
};
private final Object obj;
private final PEMEncryptor encryptor;
public MiscPEMGenerator(Object o)
{
this.obj = o; // use of this confuses some earlier JDKs.
this.encryptor = null;
}
public MiscPEMGenerator(Object o, PEMEncryptor encryptor)
{
this.obj = o;
this.encryptor = encryptor;
}
private PemObject createPemObject(Object o)
throws IOException
{
String type;
byte[] encoding;
if (o instanceof PemObject)
{
return (PemObject)o;
}
if (o instanceof PemObjectGenerator)
{
return ((PemObjectGenerator)o).generate();
}
if (o instanceof X509CertificateHolder)
{
type = "CERTIFICATE";
encoding = ((X509CertificateHolder)o).getEncoded();
}
else if (o instanceof X509CRLHolder)
{
type = "X509 CRL";
encoding = ((X509CRLHolder)o).getEncoded();
}
else if (o instanceof PrivateKeyInfo)
{
PrivateKeyInfo info = (PrivateKeyInfo)o;
ASN1ObjectIdentifier algOID = info.getPrivateKeyAlgorithm().getAlgorithm();
if (algOID.equals(PKCSObjectIdentifiers.rsaEncryption))
{
type = "RSA PRIVATE KEY";
encoding = info.parsePrivateKey().toASN1Primitive().getEncoded();
}
else if (algOID.equals(dsaOids[0]) || algOID.equals(dsaOids[1]))
{
type = "DSA PRIVATE KEY";
DSAParameter p = DSAParameter.getInstance(info.getPrivateKeyAlgorithm().getParameters());
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new ASN1Integer(0));
v.add(new ASN1Integer(p.getP()));
v.add(new ASN1Integer(p.getQ()));
v.add(new ASN1Integer(p.getG()));
BigInteger x = ASN1Integer.getInstance(info.parsePrivateKey()).getValue();
BigInteger y = p.getG().modPow(x, p.getP());
v.add(new ASN1Integer(y));
v.add(new ASN1Integer(x));
encoding = new DERSequence(v).getEncoded();
}
else if (algOID.equals(X9ObjectIdentifiers.id_ecPublicKey))
{
type = "EC PRIVATE KEY";
encoding = info.parsePrivateKey().toASN1Primitive().getEncoded();
}
else
{
throw new IOException("Cannot identify private key");
}
}
else if (o instanceof SubjectPublicKeyInfo)
{
type = "PUBLIC KEY";
encoding = ((SubjectPublicKeyInfo)o).getEncoded();
}
else if (o instanceof X509AttributeCertificateHolder)
{
type = "ATTRIBUTE CERTIFICATE";
encoding = ((X509AttributeCertificateHolder)o).getEncoded();
}
else if (o instanceof org.spongycastle.pkcs.PKCS10CertificationRequest)
{
type = "CERTIFICATE REQUEST";
encoding = ((PKCS10CertificationRequest)o).getEncoded();
}
else if (o instanceof ContentInfo)
{
type = "PKCS7";
encoding = ((ContentInfo)o).getEncoded();
}
else
{
throw new PemGenerationException("unknown object passed - can't encode.");
}
if (encryptor != null)
{
String dekAlgName = Strings.toUpperCase(encryptor.getAlgorithm());
// Note: For backward compatibility
if (dekAlgName.equals("DESEDE"))
{
dekAlgName = "DES-EDE3-CBC";
}
byte[] iv = encryptor.getIV();
byte[] encData = encryptor.encrypt(encoding);
List headers = new ArrayList(2);
headers.add(new PemHeader("Proc-Type", "4,ENCRYPTED"));
headers.add(new PemHeader("DEK-Info", dekAlgName + "," + getHexEncoded(iv)));
return new PemObject(type, headers, encData);
}
return new PemObject(type, encoding);
}
private String getHexEncoded(byte[] bytes)
throws IOException
{
char[] chars = new char[bytes.length * 2];
for (int i = 0; i != bytes.length; i++)
{
int v = bytes[i] & 0xff;
chars[2 * i] = (char)(hexEncodingTable[(v >>> 4)]);
chars[2 * i + 1] = (char)(hexEncodingTable[v & 0xf]);
}
return new String(chars);
}
public PemObject generate()
throws PemGenerationException
{
try
{
return createPemObject(obj);
}
catch (IOException e)
{
throw new PemGenerationException("encoding exception: " + e.getMessage(), e);
}
}
}
|
