http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.7. 
package org.bouncycastle.asn1.x500;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;


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 X500Name class
will produce UTF8Strings in line with the current recommendations (RFC 3280).



/**
 * 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 X500Name class
 * will produce UTF8Strings in line with the current recommendations (RFC 3280).
 * <p>
 */
public interface X500NameStyle
{
    
Convert the passed in String value into the appropriate ASN.1
encoded object.

Params:
  • 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.
/**
     * Convert the passed in String value into the appropriate ASN.1
     * encoded object.
     * 
     * @param oid the oid associated with the value in the DN.
     * @param value the value of the particular DN component.
     * @return the ASN.1 equivalent for the value.
     */
    ASN1Encodable stringToValue(ASN1ObjectIdentifier oid, String value);

    ASN1ObjectIdentifier attrNameToOID(String attrName);

    boolean areEqual(X500Name name1, X500Name name2);

    RDN[] fromString(String dirName);

    int calculateHashCode(X500Name name);

    String toString(X500Name name);
}