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      1 /* GENERATED SOURCE. DO NOT MODIFY. */
      2 package com.android.org.bouncycastle.jce;
      3 
      4 import java.io.IOException;
      5 import java.security.cert.CRLException;
      6 import java.security.cert.CertificateEncodingException;
      7 import java.security.cert.X509CRL;
      8 import java.security.cert.X509Certificate;
      9 
     10 import com.android.org.bouncycastle.asn1.ASN1Primitive;
     11 import com.android.org.bouncycastle.asn1.x509.TBSCertList;
     12 import com.android.org.bouncycastle.asn1.x509.TBSCertificateStructure;
     13 import com.android.org.bouncycastle.asn1.x509.X509Name;
     14 
     15 /**
     16  * a utility class that will extract X509Principal objects from X.509 certificates.
     17  * <p>
     18  * Use this in preference to trying to recreate a principal from a String, not all
     19  * DNs are what they should be, so it's best to leave them encoded where they
     20  * can be.
     21  * @hide This class is not part of the Android public SDK API
     22  */
     23 public class PrincipalUtil
     24 {
     25     /**
     26      * return the issuer of the given cert as an X509PrincipalObject.
     27      */
     28     public static X509Principal getIssuerX509Principal(
     29         X509Certificate cert)
     30         throws CertificateEncodingException
     31     {
     32         try
     33         {
     34             TBSCertificateStructure tbsCert = TBSCertificateStructure.getInstance(
     35                     ASN1Primitive.fromByteArray(cert.getTBSCertificate()));
     36 
     37             return new X509Principal(X509Name.getInstance(tbsCert.getIssuer()));
     38         }
     39         catch (IOException e)
     40         {
     41             throw new CertificateEncodingException(e.toString());
     42         }
     43     }
     44 
     45     /**
     46      * return the subject of the given cert as an X509PrincipalObject.
     47      */
     48     public static X509Principal getSubjectX509Principal(
     49         X509Certificate cert)
     50         throws CertificateEncodingException
     51     {
     52         try
     53         {
     54             TBSCertificateStructure tbsCert = TBSCertificateStructure.getInstance(
     55                     ASN1Primitive.fromByteArray(cert.getTBSCertificate()));
     56             return new X509Principal(X509Name.getInstance(tbsCert.getSubject()));
     57         }
     58         catch (IOException e)
     59         {
     60             throw new CertificateEncodingException(e.toString());
     61         }
     62     }
     63 
     64     /**
     65      * return the issuer of the given CRL as an X509PrincipalObject.
     66      */
     67     public static X509Principal getIssuerX509Principal(
     68         X509CRL crl)
     69         throws CRLException
     70     {
     71         try
     72         {
     73             TBSCertList tbsCertList = TBSCertList.getInstance(
     74                 ASN1Primitive.fromByteArray(crl.getTBSCertList()));
     75 
     76             return new X509Principal(X509Name.getInstance(tbsCertList.getIssuer()));
     77         }
     78         catch (IOException e)
     79         {
     80             throw new CRLException(e.toString());
     81         }
     82     }
     83 }
     84