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SignedData.java
资源名称：security.rar　[点击查看]
上传用户：lior1029
上传日期：2013-05-07
资源大小：209k
文件大小：4k
源码类别：

CA认证

开发平台：

Java

SignedData.java：源码内容
  1. package org.bouncycastle.asn1.pkcs;
  3. import java.util.Enumeration;
  5. import org.bouncycastle.asn1.*;
  6. import org.bouncycastle.asn1.x509.*;
  8. /**
  9.  * a PKCS#7 signed data object.
  10.  */
  11. public class SignedData
  12.     implements DEREncodable, PKCSObjectIdentifiers
  13. {
  14.     private DERInteger              version;
  15.     private ASN1Set                 digestAlgorithms;
  16.     private ContentInfo             contentInfo;
  17.     private ASN1Set                 certificates;
  18.     private ASN1Set                 crls;
  19.     private ASN1Set                 signerInfos;
  21.     public static SignedData getInstance(
  22.         Object  o)
  23.     {
  24.         if (o instanceof SignedData)
  25.         {
  26.             return (SignedData)o;
  27.         }
  28.         else if (o instanceof ASN1Sequence)
  29.         {
  30.             return new SignedData((ASN1Sequence)o);
  31.         }
  33.         throw new IllegalArgumentException("unknown object in factory: " + o);
  34.     }
  36. public SignedData(
  37. DERInteger        _version,
  38. ASN1Set           _digestAlgorithms,
  39. ContentInfo       _contentInfo,
  40. ASN1Set           _certificates,
  41. ASN1Set           _crls,
  42. ASN1Set           _signerInfos)
  43. {
  44. version          = _version;
  45. digestAlgorithms = _digestAlgorithms;
  46. contentInfo      = _contentInfo;
  47. certificates     = _certificates;
  48. crls             = _crls;
  49. signerInfos      = _signerInfos;
  50. }
  52.     public SignedData(
  53.         ASN1Sequence seq)
  54.     {
  55.         Enumeration     e = seq.getObjects();
  57.         version = (DERInteger)e.nextElement();
  58.         digestAlgorithms = ((ASN1Set)e.nextElement());
  59.         contentInfo = ContentInfo.getInstance(e.nextElement());
  61.         while (e.hasMoreElements())
  62.         {
  63.             DERObject o = (DERObject)e.nextElement();
  65.             //
  66.             // an interesting feature of SignedData is that there appear to be varying implementations...
  67.             // for the moment we ignore anything which doesn't fit.
  68.             //
  69.             if (o instanceof DERTaggedObject)
  70.             {
  71.                 DERTaggedObject tagged = (DERTaggedObject)o;
  73.                 switch (tagged.getTagNo())
  74.                 {
  75.                 case 0:
  76.                     certificates = ASN1Set.getInstance(tagged, false);
  77.                     break;
  78.                 case 1:
  79.                     crls = ASN1Set.getInstance(tagged, false);
  80.                     break;
  81.                 default:
  82.                     throw new IllegalArgumentException("unknown tag value " + tagged.getTagNo());
  83.                 }
  84.             }
  85.             else
  86.             {
  87.                 signerInfos = (ASN1Set)o;
  88.             }
  89.         }
  90.     }
  92.     public DERInteger getVersion()
  93.     {
  94.         return version;
  95.     }
  97.     public ASN1Set getDigestAlgorithms()
  98.     {
  99.         return digestAlgorithms;
  100.     }
  102.     public ContentInfo getContentInfo()
  103.     {
  104.         return contentInfo;
  105.     }
  107.     public ASN1Set getCertificates()
  108.     {
  109.         return certificates;
  110.     }
  112.     public ASN1Set getCRLs()
  113.     {
  114.         return crls;
  115.     }
  117.     public ASN1Set getSignerInfos()
  118.     {
  119.         return signerInfos;
  120.     }
  122.     /**
  123.      * <pre>
  124.      *  SignedData ::= SEQUENCE {
  125.      *      version Version,
  126.      *      digestAlgorithms DigestAlgorithmIdentifiers,
  127.      *      contentInfo ContentInfo,
  128.      *      certificates
  129.      *          [0] IMPLICIT ExtendedCertificatesAndCertificates
  130.      *                   OPTIONAL,
  131.      *      crls
  132.      *          [1] IMPLICIT CertificateRevocationLists OPTIONAL,
  133.      *      signerInfos SignerInfos }
  134.      * </pre>
  135.      */
  136.     public DERObject getDERObject()
  137.     {
  138.         ASN1EncodableVector v = new ASN1EncodableVector();
  140.         v.add(version);
  141.         v.add(digestAlgorithms);
  142.         v.add(contentInfo);
  144.         if (certificates != null)
  145.         {
  146.             v.add(new DERTaggedObject(false, 0, certificates));
  147.         }
  149.         if (crls != null)
  150.         {
  151.             v.add(new DERTaggedObject(false, 1, crls));
  152.         }
  154.         v.add(signerInfos);
  156.         return new BERSequence(v);
  157.     }
  158. }