org.spongycastle.asn1.x509

Class X509NameEntryConverter

java.lang.Object

org.spongycastle.asn1.x509.X509NameEntryConverter

Direct Known Subclasses:

X509DefaultEntryConverter

public abstract class X509NameEntryConverter
extends java.lang.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 Summary

Constructors

Constructor and Description
X509NameEntryConverter()

Method Summary

Modifier and Type	Method and Description
protected boolean	canBePrintable(java.lang.String str) return true if the passed in String can be represented without loss as a PrintableString, false otherwise.
protected ASN1Primitive	convertHexEncoded(java.lang.String str, int off) Convert an inline encoded hex string rendition of an ASN.1 object back into its corresponding ASN.1 object.
abstract ASN1Primitive	getConvertedValue(ASN1ObjectIdentifier oid, java.lang.String value) Convert the passed in String value into the appropriate ASN.1 encoded object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

X509NameEntryConverter

public X509NameEntryConverter()

Method Detail

convertHexEncoded

protected ASN1Primitive convertHexEncoded(java.lang.String str,
                                          int off)
                                   throws java.io.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:

java.io.IOException

canBePrintable

protected boolean canBePrintable(java.lang.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,
                                                java.lang.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.