/**
* Converts the given X.500 principal to a list of type/value attributes.
*
* @param principal Principal to convert.
* @return List of type/value attributes.
*/
public static Attributes readX500Principal(final X500Principal principal) {
final X500Name name = X500Name.getInstance(principal.getEncoded());
final Attributes attributes = new Attributes();
for (RDN rdn : name.getRDNs()) {
for (AttributeTypeAndValue tv : rdn.getTypesAndValues()) {
attributes.add(tv.getType().getId(), tv.getValue().toString());
}
}
return attributes;
}
/**
* Converts the given X.500 principal to a list of relative distinguished names that contains the
* attributes comprising the DN.
*
* @param principal Principal to convert.
* @return X500 principal as an RDN sequence.
*/
public static RDNSequence readX500Principal(final X500Principal principal) {
final X500Name name = X500Name.getInstance(principal.getEncoded());
final RDNSequence sequence = new RDNSequence();
for (org.bouncycastle.asn1.x500.RDN rdn : name.getRDNs()) {
final Attributes attributes = new Attributes();
for (AttributeTypeAndValue tv : rdn.getTypesAndValues()) {
attributes.add(tv.getType().getId(), tv.getValue().toString());
}
sequence.add(new RDN(attributes));
}
return sequence;
}
/**
* Returns the (first) value of the (first) RDN of type rdnOid
*
* @param dn The X500Name
* @param rdnOid OID of wanted RDN
* @return Value of requested RDN
*/
public static String getRdn(X500Name dn, ASN1ObjectIdentifier rdnOid) {
if (dn == null || rdnOid == null) {
return "";
}
RDN[] rdns = dn.getRDNs(rdnOid);
String value = "";
if (rdns.length > 0) {
RDN rdn = rdns[0];
value = rdn.getFirst().getValue().toString();
}
return value;
}