package org.bouncycastle.asn1.pkcs;
import java.math.BigInteger;
import java.util.Enumeration;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
public class PBKDF2Params
extends ASN1Object
{
private ASN1OctetString octStr;
private ASN1Integer iterationCount;
private ASN1Integer keyLength;
public static PBKDF2Params getInstance(
Object obj)
{
if (obj instanceof PBKDF2Params)
{
return (PBKDF2Params)obj;
}
if (obj != null)
{
return new PBKDF2Params(ASN1Sequence.getInstance(obj));
}
return null;
}
public PBKDF2Params(
byte[] salt,
int iterationCount)
{
this.octStr = new DEROctetString(salt);
this.iterationCount = new ASN1Integer(iterationCount);
}
public PBKDF2Params(
byte[] salt,
int iterationCount,
int keyLength)
{
this(salt, iterationCount);
this.keyLength = new ASN1Integer(keyLength);
}
private PBKDF2Params(
ASN1Sequence seq)
{
Enumeration e = seq.getObjects();
octStr = (ASN1OctetString)e.nextElement();
iterationCount = (ASN1Integer)e.nextElement();
if (e.hasMoreElements())
{
keyLength = (ASN1Integer)e.nextElement();
}
else
{
keyLength = null;
}
}
public byte[] getSalt()
{
return octStr.getOctets();
}
public BigInteger getIterationCount()
{
return iterationCount.getValue();
}
public BigInteger getKeyLength()
{
if (keyLength != null)
{
return keyLength.getValue();
}
return null;
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(octStr);
v.add(iterationCount);
if (keyLength != null)
{
v.add(keyLength);
}
return new DERSequence(v);
}
}