blob: 81666af7e54e0d44fd331c44f7613b5b3eae2d0f (
plain)
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
|
package org.bouncycastle.jcajce.provider.symmetric;
import java.security.AlgorithmParameters;
import java.security.InvalidAlgorithmParameterException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.spec.IvParameterSpec;
import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.CipherKeyGenerator;
import org.bouncycastle.crypto.engines.Shacal2Engine;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseAlgorithmParameterGenerator;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseKeyGenerator;
import org.bouncycastle.jcajce.provider.symmetric.util.BlockCipherProvider;
import org.bouncycastle.jcajce.provider.symmetric.util.IvAlgorithmParameters;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
public final class Shacal2
{
private Shacal2()
{
}
public static class ECB
extends BaseBlockCipher
{
public ECB()
{
super(new BlockCipherProvider()
{
public BlockCipher get()
{
return new Shacal2Engine();
}
});
}
}
public static class CBC
extends BaseBlockCipher
{
public CBC()
{
super(new CBCBlockCipher(new Shacal2Engine()), 256);//block size
}
}
public static class KeyGen
extends BaseKeyGenerator
{
public KeyGen()
{
super("Shacal2", 512, new CipherKeyGenerator());//key size
}
}
public static class AlgParamGen
extends BaseAlgorithmParameterGenerator
{
protected void engineInit(
AlgorithmParameterSpec genParamSpec,
SecureRandom random)
throws InvalidAlgorithmParameterException
{
throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for Shacal2 parameter generation.");
}
protected AlgorithmParameters engineGenerateParameters()
{
byte[] iv = new byte[32];// block size 256
if (random == null)
{
random = new SecureRandom();
}
random.nextBytes(iv);
AlgorithmParameters params;
try
{
params = AlgorithmParameters.getInstance("Shacal2", BouncyCastleProvider.PROVIDER_NAME);
params.init(new IvParameterSpec(iv));
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
return params;
}
}
public static class AlgParams
extends IvAlgorithmParameters
{
protected String engineToString()
{
return "Shacal2 IV";
}
}
public static class Mappings
extends SymmetricAlgorithmProvider
{
private static final String PREFIX = Shacal2.class.getName();
public Mappings()
{
}
public void configure(ConfigurableProvider provider)
{
provider.addAlgorithm("Cipher.Shacal2", PREFIX + "$ECB");
provider.addAlgorithm("KeyGenerator.Shacal2", PREFIX + "$KeyGen");
provider.addAlgorithm("AlgorithmParameterGenerator.Shacal2", PREFIX + "$AlgParamGen");
provider.addAlgorithm("AlgorithmParameters.Shacal2", PREFIX + "$AlgParams");
}
}
}
|