package org.bouncycastle.asn1.pkcs;
import java.util.Enumeration;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
public class PBES2Parameters
extends ASN1Object
implements PKCSObjectIdentifiers
{
private KeyDerivationFunc func;
private EncryptionScheme scheme;
public static PBES2Parameters getInstance(
Object obj)
{
if (obj instanceof PBES2Parameters)
{
return (PBES2Parameters)obj;
}
if (obj != null)
{
return new PBES2Parameters(ASN1Sequence.getInstance(obj));
}
return null;
}
public PBES2Parameters(KeyDerivationFunc keyDevFunc, EncryptionScheme encScheme)
{
this.func = keyDevFunc;
this.scheme = encScheme;
}
private PBES2Parameters(
ASN1Sequence obj)
{
Enumeration e = obj.getObjects();
ASN1Sequence funcSeq = ASN1Sequence.getInstance(((ASN1Encodable)e.nextElement()).toASN1Primitive());
if (funcSeq.getObjectAt(0).equals(id_PBKDF2))
{
func = new KeyDerivationFunc(id_PBKDF2, PBKDF2Params.getInstance(funcSeq.getObjectAt(1)));
}
else
{
func = KeyDerivationFunc.getInstance(funcSeq);
}
scheme = EncryptionScheme.getInstance(e.nextElement());
}
public KeyDerivationFunc getKeyDerivationFunc()
{
return func;
}
public EncryptionScheme getEncryptionScheme()
{
return scheme;
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(func);
v.add(scheme);
return new DERSequence(v);
}
}