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RecipientInfo.java
Package: security.rar　[view]
Upload User: lior1029
Upload Date: 2013-05-07
Package Size: 209k
Code Size: 3k
Category:

CA program

Development Platform:

Java

RecipientInfo.java：Code Content
  1. package org.bouncycastle.asn1.cms;
  3. import org.bouncycastle.asn1.ASN1Sequence;
  4. import org.bouncycastle.asn1.ASN1TaggedObject;
  5. import org.bouncycastle.asn1.DERTaggedObject;
  6. import org.bouncycastle.asn1.DEREncodable;
  7. import org.bouncycastle.asn1.DERInteger;
  8. import org.bouncycastle.asn1.DERObject;
  10. public class RecipientInfo
  11.     implements DEREncodable
  12. {
  13.     DEREncodable    info;
  15.     public RecipientInfo(
  16.         KeyTransRecipientInfo info)
  17.     {
  18.         this.info = info;
  19.     }
  21.     public RecipientInfo(
  22.         KeyAgreeRecipientInfo info)
  23.     {
  24.         this.info = new DERTaggedObject(true, 1, info);
  25.     }
  27.     public RecipientInfo(
  28.         KEKRecipientInfo info)
  29.     {
  30.         this.info = new DERTaggedObject(true, 2, info);
  31.     }
  33.     public RecipientInfo(
  34.         DERObject   info)
  35.     {
  36.         this.info = info;
  37.     }
  39.     public static RecipientInfo getInstance(
  40.         Object  o)
  41.     {
  42.         if (o == null || o instanceof RecipientInfo)
  43.         {
  44.             return (RecipientInfo)o;
  45.         }
  46.         else if (o instanceof ASN1Sequence)
  47.         {
  48.             return new RecipientInfo((ASN1Sequence)o);
  49.         }
  50.         else if (o instanceof ASN1TaggedObject)
  51.         {
  52.             return new RecipientInfo((ASN1TaggedObject)o);
  53.         }
  55.         throw new IllegalArgumentException("unknown object in factory: "
  56.                                                     + o.getClass().getName());
  57.     }
  59.     public DERInteger getVersion()
  60.     {
  61.         if (info instanceof ASN1TaggedObject)
  62.         {
  63.             ASN1TaggedObject o = (ASN1TaggedObject)info;
  65.             switch (o.getTagNo())
  66.             {
  67.             case 1:
  68.                 return KeyAgreeRecipientInfo.getInstance(o, true).getVersion();
  69.             case 2:
  70.                 return KEKRecipientInfo.getInstance(o, true).getVersion();
  71.             default:
  72.                 throw new IllegalStateException("unknown tag");
  73.             }
  74.         }
  76.         return KeyTransRecipientInfo.getInstance(info).getVersion();
  77.     }
  79.     public boolean isTagged()
  80.     {
  81.         return (info instanceof ASN1TaggedObject);
  82.     }
  84. public DEREncodable getInfo()
  85.     {
  86.         if (info instanceof ASN1TaggedObject)
  87.         {
  88.             ASN1TaggedObject o = (ASN1TaggedObject)info;
  90.             switch (o.getTagNo())
  91.             {
  92.             case 1:
  93.                 return KeyAgreeRecipientInfo.getInstance(o, true);
  94.             case 2:
  95.                 return KEKRecipientInfo.getInstance(o, true);
  96.             default:
  97.                 throw new IllegalStateException("unknown tag");
  98.             }
  99.         }
  101.         return KeyTransRecipientInfo.getInstance(info);
  102. }
  104.     /** 
  105.      * <pre>
  106.      * RecipientInfo ::= CHOICE {
  107.      *  ktri KeyTransRecipientInfo,
  108.      *  kari [1] KeyAgreeRecipientInfo,
  109.      *  kekri [2] KEKRecipientInfo 
  110.      * }
  111.      * </pre>
  112.      */
  113. public DERObject getDERObject()
  114.     {
  115.         return info.getDERObject();
  116. }
  117. }