private byte[] encodeObj(DEREncodable obj) throws IOException {
if (obj != null) {
return obj.getDERObject().getEncoded();
}
return null;
}
/**
* Constructor from ASN1Sequence
*
* <p>the principal will be a list of constructed sets, each containing an (OID, String) pair.
*/
public X509Name(ASN1Sequence seq) {
this.seq = seq;
Enumeration e = seq.getObjects();
while (e.hasMoreElements()) {
ASN1Set set = ASN1Set.getInstance(e.nextElement());
for (int i = 0; i < set.size(); i++) {
ASN1Sequence s = ASN1Sequence.getInstance(set.getObjectAt(i));
if (s.size() != 2) {
throw new IllegalArgumentException("badly sized pair");
}
ordering.addElement(DERObjectIdentifier.getInstance(s.getObjectAt(0)));
DEREncodable value = s.getObjectAt(1);
if (value instanceof DERString) {
values.addElement(((DERString) value).getString());
} else {
values.addElement("#" + bytesToString(Hex.encode(value.getDERObject().getDEREncoded())));
}
added.addElement((i != 0) ? TRUE : FALSE); // to allow earlier JDK compatibility
}
}
}
/**
* return the ASN.1 encoded key derivation algorithm parameters, or null if there aren't any.
*
* @return ASN.1 encoding of key derivation algorithm parameters.
*/
public byte[] getKeyDerivationAlgParams() {
try {
if (info.getKeyDerivationAlgorithm() != null) {
DEREncodable params = info.getKeyDerivationAlgorithm().getParameters();
if (params != null) {
return params.getDERObject().getEncoded();
}
}
return null;
} catch (Exception e) {
throw new RuntimeException("exception getting encryption parameters " + e);
}
}
/**
* return an AlgorithmParameters object representing the parameters to the key derivation
* algorithm to the recipient.
*
* @return AlgorithmParameters object, null if there aren't any.
*/
public AlgorithmParameters getKeyDerivationAlgParameters(Provider provider) {
try {
if (info.getKeyDerivationAlgorithm() != null) {
DEREncodable params = info.getKeyDerivationAlgorithm().getParameters();
if (params != null) {
AlgorithmParameters algP =
AlgorithmParameters.getInstance(
info.getKeyDerivationAlgorithm().getObjectId().toString(), provider);
algP.init(params.getDERObject().getEncoded());
return algP;
}
}
return null;
} catch (Exception e) {
throw new RuntimeException("exception getting encryption parameters " + e);
}
}