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      1 package org.bouncycastle.asn1.x509;
      2 
      3 import org.bouncycastle.asn1.ASN1Encodable;
      4 import org.bouncycastle.asn1.ASN1Sequence;
      5 import org.bouncycastle.asn1.ASN1TaggedObject;
      6 import org.bouncycastle.asn1.DERBitString;
      7 import org.bouncycastle.asn1.DERInteger;
      8 import org.bouncycastle.asn1.DERObject;
      9 import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
     10 
     11 /**
     12  * an X509Certificate structure.
     13  * <pre>
     14  *  Certificate ::= SEQUENCE {
     15  *      tbsCertificate          TBSCertificate,
     16  *      signatureAlgorithm      AlgorithmIdentifier,
     17  *      signature               BIT STRING
     18  *  }
     19  * </pre>
     20  */
     21 public class X509CertificateStructure
     22     extends ASN1Encodable
     23     implements X509ObjectIdentifiers, PKCSObjectIdentifiers
     24 {
     25     ASN1Sequence  seq;
     26     TBSCertificateStructure tbsCert;
     27     AlgorithmIdentifier     sigAlgId;
     28     DERBitString            sig;
     29 
     30     public static X509CertificateStructure getInstance(
     31         ASN1TaggedObject obj,
     32         boolean          explicit)
     33     {
     34         return getInstance(ASN1Sequence.getInstance(obj, explicit));
     35     }
     36 
     37     public static X509CertificateStructure getInstance(
     38         Object  obj)
     39     {
     40         if (obj instanceof X509CertificateStructure)
     41         {
     42             return (X509CertificateStructure)obj;
     43         }
     44         else if (obj instanceof ASN1Sequence)
     45         {
     46             return new X509CertificateStructure((ASN1Sequence)obj);
     47         }
     48 
     49         throw new IllegalArgumentException("unknown object in factory");
     50     }
     51 
     52     public X509CertificateStructure(
     53         ASN1Sequence  seq)
     54     {
     55         this.seq = seq;
     56 
     57         //
     58         // correct x509 certficate
     59         //
     60         if (seq.size() == 3)
     61         {
     62             tbsCert = TBSCertificateStructure.getInstance(seq.getObjectAt(0));
     63             sigAlgId = AlgorithmIdentifier.getInstance(seq.getObjectAt(1));
     64 
     65             sig = DERBitString.getInstance(seq.getObjectAt(2));
     66         }
     67         else
     68         {
     69             throw new IllegalArgumentException("sequence wrong size for a certificate");
     70         }
     71     }
     72 
     73     public TBSCertificateStructure getTBSCertificate()
     74     {
     75         return tbsCert;
     76     }
     77 
     78     public int getVersion()
     79     {
     80         return tbsCert.getVersion();
     81     }
     82 
     83     public DERInteger getSerialNumber()
     84     {
     85         return tbsCert.getSerialNumber();
     86     }
     87 
     88     public X509Name getIssuer()
     89     {
     90         return tbsCert.getIssuer();
     91     }
     92 
     93     public Time getStartDate()
     94     {
     95         return tbsCert.getStartDate();
     96     }
     97 
     98     public Time getEndDate()
     99     {
    100         return tbsCert.getEndDate();
    101     }
    102 
    103     public X509Name getSubject()
    104     {
    105         return tbsCert.getSubject();
    106     }
    107 
    108     public SubjectPublicKeyInfo getSubjectPublicKeyInfo()
    109     {
    110         return tbsCert.getSubjectPublicKeyInfo();
    111     }
    112 
    113     public AlgorithmIdentifier getSignatureAlgorithm()
    114     {
    115         return sigAlgId;
    116     }
    117 
    118     public DERBitString getSignature()
    119     {
    120         return sig;
    121     }
    122 
    123     public DERObject toASN1Object()
    124     {
    125         return seq;
    126     }
    127 }
    128