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
|
package org.bouncycastle.pqc.jcajce.provider.rainbow;
import java.security.InvalidKeyException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.SignatureException;
import java.security.spec.AlgorithmParameterSpec;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.SHA224Digest;
import org.bouncycastle.crypto.digests.SHA256Digest;
import org.bouncycastle.crypto.digests.SHA384Digest;
import org.bouncycastle.crypto.digests.SHA512Digest;
import org.bouncycastle.crypto.params.ParametersWithRandom;
import org.bouncycastle.pqc.crypto.rainbow.RainbowSigner;
/**
* Rainbow Signature class, extending the jce SignatureSpi.
*/
public class SignatureSpi
extends java.security.SignatureSpi
{
private Digest digest;
private RainbowSigner signer;
private SecureRandom random;
protected SignatureSpi(Digest digest, RainbowSigner signer)
{
this.digest = digest;
this.signer = signer;
}
protected void engineInitVerify(PublicKey publicKey)
throws InvalidKeyException
{
CipherParameters param;
param = RainbowKeysToParams.generatePublicKeyParameter(publicKey);
digest.reset();
signer.init(false, param);
}
protected void engineInitSign(PrivateKey privateKey, SecureRandom random)
throws InvalidKeyException
{
this.random = random;
engineInitSign(privateKey);
}
protected void engineInitSign(PrivateKey privateKey)
throws InvalidKeyException
{
CipherParameters param;
param = RainbowKeysToParams.generatePrivateKeyParameter(privateKey);
if (random != null)
{
param = new ParametersWithRandom(param, random);
}
digest.reset();
signer.init(true, param);
}
protected void engineUpdate(byte b)
throws SignatureException
{
digest.update(b);
}
protected void engineUpdate(byte[] b, int off, int len)
throws SignatureException
{
digest.update(b, off, len);
}
protected byte[] engineSign()
throws SignatureException
{
byte[] hash = new byte[digest.getDigestSize()];
digest.doFinal(hash, 0);
try
{
byte[] sig = signer.generateSignature(hash);
return sig;
}
catch (Exception e)
{
throw new SignatureException(e.toString());
}
}
protected boolean engineVerify(byte[] sigBytes)
throws SignatureException
{
byte[] hash = new byte[digest.getDigestSize()];
digest.doFinal(hash, 0);
return signer.verifySignature(hash, sigBytes);
}
protected void engineSetParameter(AlgorithmParameterSpec params)
{
throw new UnsupportedOperationException("engineSetParameter unsupported");
}
/**
* @deprecated replaced with <a href =
* "#engineSetParameter(java.security.spec.AlgorithmParameterSpec)"
* >
*/
protected void engineSetParameter(String param, Object value)
{
throw new UnsupportedOperationException("engineSetParameter unsupported");
}
/**
* @deprecated
*/
protected Object engineGetParameter(String param)
{
throw new UnsupportedOperationException("engineSetParameter unsupported");
}
static public class withSha224
extends SignatureSpi
{
public withSha224()
{
super(new SHA224Digest(), new RainbowSigner());
}
}
static public class withSha256
extends SignatureSpi
{
public withSha256()
{
super(new SHA256Digest(), new RainbowSigner());
}
}
static public class withSha384
extends SignatureSpi
{
public withSha384()
{
super(new SHA384Digest(), new RainbowSigner());
}
}
static public class withSha512
extends SignatureSpi
{
public withSha512()
{
super(new SHA512Digest(), new RainbowSigner());
}
}
}
|
