content: package local.org.bouncycastle.asn1.x509;
  
  import java.io.IOException;
  
  import local.org.bouncycastle.asn1.ASN1Encodable;
  import local.org.bouncycastle.asn1.ASN1ObjectIdentifier;
  import local.org.bouncycastle.asn1.ASN1OctetString;
  import local.org.bouncycastle.asn1.ASN1Primitive;
  import local.org.bouncycastle.asn1.DERBoolean;
  
  
  /**
   * an object for the elements in the X.509 V3 extension block.
   */
  public class X509Extension
  {
      /**
       * Subject Directory Attributes
       */
      public static final ASN1ObjectIdentifier subjectDirectoryAttributes = new ASN1ObjectIdentifier("2.5.29.9");
      
      /**
       * Subject Key Identifier 
       */
      public static final ASN1ObjectIdentifier subjectKeyIdentifier = new ASN1ObjectIdentifier("2.5.29.14");
  
      /**
       * Key Usage 
       */
      public static final ASN1ObjectIdentifier keyUsage = new ASN1ObjectIdentifier("2.5.29.15");
  
      /**
       * Private Key Usage Period 
       */
      public static final ASN1ObjectIdentifier privateKeyUsagePeriod = new ASN1ObjectIdentifier("2.5.29.16");
  
      /**
       * Subject Alternative Name 
       */
      public static final ASN1ObjectIdentifier subjectAlternativeName = new ASN1ObjectIdentifier("2.5.29.17");
  
      /**
       * Issuer Alternative Name 
       */
      public static final ASN1ObjectIdentifier issuerAlternativeName = new ASN1ObjectIdentifier("2.5.29.18");
  
      /**
       * Basic Constraints 
       */
      public static final ASN1ObjectIdentifier basicConstraints = new ASN1ObjectIdentifier("2.5.29.19");
  
      /**
       * CRL Number 
       */
      public static final ASN1ObjectIdentifier cRLNumber = new ASN1ObjectIdentifier("2.5.29.20");
  
      /**
       * Reason code 
       */
      public static final ASN1ObjectIdentifier reasonCode = new ASN1ObjectIdentifier("2.5.29.21");
  
      /**
       * Hold Instruction Code 
       */
      public static final ASN1ObjectIdentifier instructionCode = new ASN1ObjectIdentifier("2.5.29.23");
  
      /**
       * Invalidity Date 
       */
      public static final ASN1ObjectIdentifier invalidityDate = new ASN1ObjectIdentifier("2.5.29.24");
  
      /**
       * Delta CRL indicator 
       */
      public static final ASN1ObjectIdentifier deltaCRLIndicator = new ASN1ObjectIdentifier("2.5.29.27");
  
      /**
       * Issuing Distribution Point 
       */
      public static final ASN1ObjectIdentifier issuingDistributionPoint = new ASN1ObjectIdentifier("2.5.29.28");
  
      /**
       * Certificate Issuer 
       */
      public static final ASN1ObjectIdentifier certificateIssuer = new ASN1ObjectIdentifier("2.5.29.29");
  
      /**
       * Name Constraints 
       */
      public static final ASN1ObjectIdentifier nameConstraints = new ASN1ObjectIdentifier("2.5.29.30");
  
      /**
       * CRL Distribution Points 
       */
      public static final ASN1ObjectIdentifier cRLDistributionPoints = new ASN1ObjectIdentifier("2.5.29.31");
  
      /**
       * Certificate Policies 
       */
      public static final ASN1ObjectIdentifier certificatePolicies = new ASN1ObjectIdentifier("2.5.29.32");
  
      /**
       * Policy Mappings 
       */
      public static final ASN1ObjectIdentifier policyMappings = new ASN1ObjectIdentifier("2.5.29.33");
  
      /**
       * Authority Key Identifier 
       */
      public static final ASN1ObjectIdentifier authorityKeyIdentifier = new ASN1ObjectIdentifier("2.5.29.35");
  
      /**
       * Policy Constraints 
       */
      public static final ASN1ObjectIdentifier policyConstraints = new ASN1ObjectIdentifier("2.5.29.36");
  
      /**
       * Extended Key Usage 
       */
      public static final ASN1ObjectIdentifier extendedKeyUsage = new ASN1ObjectIdentifier("2.5.29.37");
  
      /**
       * Freshest CRL
       */
      public static final ASN1ObjectIdentifier freshestCRL = new ASN1ObjectIdentifier("2.5.29.46");
       
      /**
       * Inhibit Any Policy
       */
      public static final ASN1ObjectIdentifier inhibitAnyPolicy = new ASN1ObjectIdentifier("2.5.29.54");
  
      /**
       * Authority Info Access
       */
      public static final ASN1ObjectIdentifier authorityInfoAccess = new ASN1ObjectIdentifier("1.3.6.1.5.5.7.1.1");
  
      /**
       * Subject Info Access
       */
      public static final ASN1ObjectIdentifier subjectInfoAccess = new ASN1ObjectIdentifier("1.3.6.1.5.5.7.1.11");
      
      /**
       * Logo Type
       */
      public static final ASN1ObjectIdentifier logoType = new ASN1ObjectIdentifier("1.3.6.1.5.5.7.1.12");
  
      /**
       * BiometricInfo
       */
      public static final ASN1ObjectIdentifier biometricInfo = new ASN1ObjectIdentifier("1.3.6.1.5.5.7.1.2");
      
      /**
       * QCStatements
       */
      public static final ASN1ObjectIdentifier qCStatements = new ASN1ObjectIdentifier("1.3.6.1.5.5.7.1.3");
  
      /**
       * Audit identity extension in attribute certificates.
       */
      public static final ASN1ObjectIdentifier auditIdentity = new ASN1ObjectIdentifier("1.3.6.1.5.5.7.1.4");
      
      /**
       * NoRevAvail extension in attribute certificates.
       */
      public static final ASN1ObjectIdentifier noRevAvail = new ASN1ObjectIdentifier("2.5.29.56");
  
      /**
       * TargetInformation extension in attribute certificates.
       */
      public static final ASN1ObjectIdentifier targetInformation = new ASN1ObjectIdentifier("2.5.29.55");
          
      boolean             critical;
      ASN1OctetString     value;
  
      public X509Extension(
          DERBoolean              critical,
          ASN1OctetString         value)
      {
          this.critical = critical.isTrue();
          this.value = value;
      }
  
      public X509Extension(
          boolean                 critical,
          ASN1OctetString         value)
      {
          this.critical = critical;
          this.value = value;
      }
  
      public boolean isCritical()
      {
          return critical;
      }
  
      public ASN1OctetString getValue()
      {
          return value;
      }
  
      public ASN1Encodable getParsedValue()
      {
          return convertValueToObject(this);
      }
  
      public int hashCode()
      {
          if (this.isCritical())
          {
              return this.getValue().hashCode();
          }
  
          return ~this.getValue().hashCode();
      }
  
      public boolean equals(
          Object  o)
      {
          if (!(o instanceof X509Extension))
          {
              return false;
          }
  
          X509Extension   other = (X509Extension)o;
  
          return other.getValue().equals(this.getValue())
              && (other.isCritical() == this.isCritical());
      }
  
      /**
       * Convert the value of the passed in extension to an object
       * @param ext the extension to parse
       * @return the object the value string contains
       * @exception IllegalArgumentException if conversion is not possible
       */
      public static ASN1Primitive convertValueToObject(
          X509Extension ext)
          throws IllegalArgumentException
      {
          try
          {
              return ASN1Primitive.fromByteArray(ext.getValue().getOctets());
          }
          catch (IOException e)
          {
              throw new IllegalArgumentException("can't convert extension: " +  e);
          }
      }
  }
  