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
|
package org.spongycastle.jce.spec;
import java.security.spec.AlgorithmParameterSpec;
import org.spongycastle.asn1.ASN1ObjectIdentifier;
import org.spongycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
import org.spongycastle.asn1.cryptopro.GOST3410NamedParameters;
import org.spongycastle.asn1.cryptopro.GOST3410ParamSetParameters;
import org.spongycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters;
import org.spongycastle.jce.interfaces.GOST3410Params;
/**
* ParameterSpec for a GOST 3410-94 key.
*/
public class GOST3410ParameterSpec
implements AlgorithmParameterSpec, GOST3410Params
{
private GOST3410PublicKeyParameterSetSpec keyParameters;
private String keyParamSetOID;
private String digestParamSetOID;
private String encryptionParamSetOID;
public GOST3410ParameterSpec(
String keyParamSetID,
String digestParamSetOID,
String encryptionParamSetOID)
{
GOST3410ParamSetParameters ecP = null;
try
{
ecP = GOST3410NamedParameters.getByOID(new ASN1ObjectIdentifier(keyParamSetID));
}
catch (IllegalArgumentException e)
{
ASN1ObjectIdentifier oid = GOST3410NamedParameters.getOID(keyParamSetID);
if (oid != null)
{
keyParamSetID = oid.getId();
ecP = GOST3410NamedParameters.getByOID(oid);
}
}
if (ecP == null)
{
throw new IllegalArgumentException("no key parameter set for passed in name/OID.");
}
this.keyParameters = new GOST3410PublicKeyParameterSetSpec(
ecP.getP(),
ecP.getQ(),
ecP.getA());
this.keyParamSetOID = keyParamSetID;
this.digestParamSetOID = digestParamSetOID;
this.encryptionParamSetOID = encryptionParamSetOID;
}
public GOST3410ParameterSpec(
String keyParamSetID,
String digestParamSetOID)
{
this(keyParamSetID, digestParamSetOID, null);
}
public GOST3410ParameterSpec(
String keyParamSetID)
{
this(keyParamSetID, CryptoProObjectIdentifiers.gostR3411_94_CryptoProParamSet.getId(), null);
}
public GOST3410ParameterSpec(
GOST3410PublicKeyParameterSetSpec spec)
{
this.keyParameters = spec;
this.digestParamSetOID = CryptoProObjectIdentifiers.gostR3411_94_CryptoProParamSet.getId();
this.encryptionParamSetOID = null;
}
public String getPublicKeyParamSetOID()
{
return this.keyParamSetOID;
}
public GOST3410PublicKeyParameterSetSpec getPublicKeyParameters()
{
return keyParameters;
}
public String getDigestParamSetOID()
{
return this.digestParamSetOID;
}
public String getEncryptionParamSetOID()
{
return this.encryptionParamSetOID;
}
public boolean equals(Object o)
{
if (o instanceof GOST3410ParameterSpec)
{
GOST3410ParameterSpec other = (GOST3410ParameterSpec)o;
return this.keyParameters.equals(other.keyParameters)
&& this.digestParamSetOID.equals(other.digestParamSetOID)
&& (this.encryptionParamSetOID == other.encryptionParamSetOID
|| (this.encryptionParamSetOID != null && this.encryptionParamSetOID.equals(other.encryptionParamSetOID)));
}
return false;
}
public int hashCode()
{
return this.keyParameters.hashCode() ^ this.digestParamSetOID.hashCode()
^ (this.encryptionParamSetOID != null ? this.encryptionParamSetOID.hashCode() : 0);
}
public static GOST3410ParameterSpec fromPublicKeyAlg(
GOST3410PublicKeyAlgParameters params)
{
if (params.getEncryptionParamSet() != null)
{
return new GOST3410ParameterSpec(params.getPublicKeyParamSet().getId(), params.getDigestParamSet().getId(), params.getEncryptionParamSet().getId());
}
else
{
return new GOST3410ParameterSpec(params.getPublicKeyParamSet().getId(), params.getDigestParamSet().getId());
}
}
}
|
