Package org.bouncycastle.asn1.x509

Class X509NameEntryConverter

java.lang.Object
org.bouncycastle.asn1.x509.X509NameEntryConverter
Direct Known Subclasses:
X509DefaultEntryConverter
public abstract class X509NameEntryConverter extends Object
It turns out that the number of standard ways the fields in a DN should be encoded into their ASN.1 counterparts is rapidly approaching the number of machines on the internet. By default the X509Name class will produce UTF8Strings in line with the current recommendations (RFC 3280).

An example of an encoder look like below: 

 public class X509DirEntryConverter
     extends X509NameEntryConverter
 {
     public ASN1Primitive getConvertedValue(
         ASN1ObjectIdentifier  oid,
         String               value)
     {
         if (str.length() != 0 && str.charAt(0) == '#')
         {
             return convertHexEncoded(str, 1);
         }
         if (oid.equals(EmailAddress))
         {
             return new DERIA5String(str);
         }
         else if (canBePrintable(str))
         {
             return new DERPrintableString(str);
         }
         else if (canBeUTF8(str))
         {
             return new DERUTF8String(str);
         }
         else
         {
             return new DERBMPString(str);
         }
     }
 }

  • Constructor Details

    • X509NameEntryConverter

      public X509NameEntryConverter()

  • Method Details

    • convertHexEncoded

      protected ASN1Primitive convertHexEncoded(String str, int off) throws IOException
      Convert an inline encoded hex string rendition of an ASN.1 object back into its corresponding ASN.1 object.
      Parameters:
      str - the hex encoded object
      off - the index at which the encoding starts
      Returns:
      the decoded object
      Throws:
      IOException

    • canBePrintable

      protected boolean canBePrintable(String str)
      return true if the passed in String can be represented without loss as a PrintableString, false otherwise.

    • getConvertedValue

      public abstract ASN1Primitive getConvertedValue(ASN1ObjectIdentifier oid, String value)
      Convert the passed in String value into the appropriate ASN.1 encoded object.
      Parameters:
      oid - the oid associated with the value in the DN.
      value - the value of the particular DN component.
      Returns:
      the ASN.1 equivalent for the value.