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X509CertificateStructure.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：3k
源码类别：

CA认证

开发平台：

Java

X509CertificateStructure.java：源码内容
  1. package org.bouncycastle.asn1.x509;
  3. import org.bouncycastle.asn1.*;
  4. import org.bouncycastle.asn1.pkcs.*;
  6. /**
  7.  * an X509Certificate structure.
  8.  * <pre>
  9.  *  Certificate ::= SEQUENCE {
  10.  *      tbsCertificate          TBSCertificate,
  11.  *      signatureAlgorithm      AlgorithmIdentifier,
  12.  *      signature               BIT STRING
  13.  *  }
  14.  * </pre>
  15.  */
  16. public class X509CertificateStructure
  17.     implements DEREncodable, X509ObjectIdentifiers, PKCSObjectIdentifiers
  18. {
  19.     ASN1Sequence  seq;
  20.     TBSCertificateStructure tbsCert;
  21.     AlgorithmIdentifier     sigAlgId;
  22.     DERBitString            sig;
  24.     public static X509CertificateStructure getInstance(
  25.         ASN1TaggedObject obj,
  26.         boolean          explicit)
  27.     {
  28.         return getInstance(ASN1Sequence.getInstance(obj, explicit));
  29.     }
  31.     public static X509CertificateStructure getInstance(
  32.         Object  obj)
  33.     {
  34.         if (obj instanceof X509CertificateStructure)
  35.         {
  36.             return (X509CertificateStructure)obj;
  37.         }
  38.         else if (obj instanceof ASN1Sequence)
  39.         {
  40.             return new X509CertificateStructure((ASN1Sequence)obj);
  41.         }
  43.         throw new IllegalArgumentException("unknown object in factory");
  44.     }
  46.     public X509CertificateStructure(
  47.         ASN1Sequence  seq)
  48.     {
  49.         this.seq = seq;
  51.         //
  52.         // correct x509 certficate
  53.         //
  54.         if (seq.size() == 3)
  55.         {
  56.             tbsCert = TBSCertificateStructure.getInstance(seq.getObjectAt(0));
  57.             sigAlgId = AlgorithmIdentifier.getInstance(seq.getObjectAt(1));
  59.             sig = (DERBitString)seq.getObjectAt(2);
  60.         }
  61.     }
  63.     public TBSCertificateStructure getTBSCertificate()
  64.     {
  65.         return tbsCert;
  66.     }
  68.     public int getVersion()
  69.     {
  70.         return tbsCert.getVersion();
  71.     }
  73.     public DERInteger getSerialNumber()
  74.     {
  75.         return tbsCert.getSerialNumber();
  76.     }
  78.     public X509Name getIssuer()
  79.     {
  80.         return tbsCert.getIssuer();
  81.     }
  83.     public Time getStartDate()
  84.     {
  85.         return tbsCert.getStartDate();
  86.     }
  88.     public Time getEndDate()
  89.     {
  90.         return tbsCert.getEndDate();
  91.     }
  93.     public X509Name getSubject()
  94.     {
  95.         return tbsCert.getSubject();
  96.     }
  98.     public SubjectPublicKeyInfo getSubjectPublicKeyInfo()
  99.     {
  100.         return tbsCert.getSubjectPublicKeyInfo();
  101.     }
  103.     public AlgorithmIdentifier getSignatureAlgorithm()
  104.     {
  105.         return sigAlgId;
  106.     }
  108.     public DERBitString getSignature()
  109.     {
  110.         return sig;
  111.     }
  113.     public DERObject getDERObject()
  114.     {
  115.         return seq;
  116.     }
  118.     // 张荣华 2003.0701 添加了生成证书的函数
  120.     public DERObject generateX509Cert(
  121.             TBSCertificateStructure tbsCert,
  122.             AlgorithmIdentifier     sigAlgId,
  123.             DERBitString            sig)
  124.     {
  125.         ASN1EncodableVector  v = new ASN1EncodableVector();
  126.         v.add(tbsCert);
  127.         v.add(sigAlgId);
  128.         v.add(sig);
  129.         return new DERSequence(v);
  130.     }
  131. }