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Java > Open Source Codes > com > novosec > pkix > asn1 > cmp > DHBMParameter


1 // CMP implementation copyright (c) 2003 NOVOSEC AG (http://www.novosec.com)
2 //
3 // Author: Maik Stohn
4 //
5 // Permission is hereby granted, free of charge, to any person obtaining a copy of this
6 // software and associated documentation files (the "Software"), to deal in the Software
7 // without restriction, including without limitation the rights to use, copy, modify, merge,
8 // publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
9 // to whom the Software is furnished to do so, subject to the following conditions:
10 //
11 // The above copyright notice and this permission notice shall be included in all copies or
12 // substantial portions of the Software.
13 //
14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
15 // BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
16 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
17 // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
19
20 package com.novosec.pkix.asn1.cmp;
21
22 import org.bouncycastle.asn1.ASN1EncodableVector;
23 import org.bouncycastle.asn1.ASN1Sequence;
24 import org.bouncycastle.asn1.ASN1TaggedObject;
25 import org.bouncycastle.asn1.DEREncodable;
26 import org.bouncycastle.asn1.DERObject;
27 import org.bouncycastle.asn1.DERSequence;
28 import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
29
30 /**
31  * ASN.1 structure DER En/DeCoder.
32  *
33  * <pre>
34  * DHBMParameter ::= SEQUENCE {
35  * owf AlgorithmIdentifier, -- AlgId for a One-Way Function (SHA-1 recommended)
36  * mac AlgorithmIdentifier -- the MAC AlgId (e.g., DES-MAC, Triple-DES-MAC [PKCS11], or HMAC [RFC2104, RFC2202])
37  * }
38  *
39  * </pre>
40  */
41 public class DHBMParameter implements DEREncodable
42 {
43     AlgorithmIdentifier owf;
44     AlgorithmIdentifier mac;
45
46     public static DHBMParameter getInstance(ASN1TaggedObject obj, boolean explicit)
47     {
48       return getInstance(ASN1Sequence.getInstance(obj, explicit));
49     }
50
51     public static DHBMParameter getInstance(Object JavaDoc obj)
52     {
53       if (obj instanceof DHBMParameter)
54       {
55         return (DHBMParameter) obj;
56       }
57       else if (obj instanceof ASN1Sequence)
58       {
59         return new DHBMParameter((ASN1Sequence) obj);
60       }
61
62       throw new IllegalArgumentException JavaDoc("unknown object in factory");
63     }
64
65     public DHBMParameter(ASN1Sequence seq)
66     {
67       this.owf = AlgorithmIdentifier.getInstance(seq.getObjectAt(0));
68       this.mac = AlgorithmIdentifier.getInstance(seq.getObjectAt(1));
69     }
70
71     public DHBMParameter(AlgorithmIdentifier owf, AlgorithmIdentifier mac)
72     {
73       this.owf = owf;
74       this.mac = mac;
75     }
76
77     public AlgorithmIdentifier getOwf()
78     {
79       return owf;
80     }
81
82     public AlgorithmIdentifier getMac()
83     {
84       return mac;
85     }
86
87     public DERObject getDERObject()
88     {
89       ASN1EncodableVector v = new ASN1EncodableVector();
90
91       v.add(owf);
92       v.add(mac);
93
94       return new DERSequence(v);
95     }
96
97     public String JavaDoc toString()
98     {
99         return "DHBMParameter: (owf = " + this.getOwf() + ", mac = " + this.getMac() + ")";
100     }
101 }
102
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