org.bouncycastle.asn1.misc.CAST5CBCParameters Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcutil-jdk18on Show documentation

The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls. This jar contains APIs for JDK 1.8 and up.

There is a newer version: 1.78.1

Show newest version

package org.bouncycastle.asn1.misc;

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;
import org.bouncycastle.util.Arrays;

public class CAST5CBCParameters
    extends ASN1Object
{
    ASN1Integer      keyLength;
    ASN1OctetString iv;

    public static CAST5CBCParameters getInstance(
        Object  o)
    {
        if (o instanceof CAST5CBCParameters)
        {
            return (CAST5CBCParameters)o;
        }
        else if (o != null)
        {
            return new CAST5CBCParameters(ASN1Sequence.getInstance(o));
        }

        return null;
    }

    public CAST5CBCParameters(
        byte[]  iv,
        int     keyLength)
    {
        this.iv = new DEROctetString(Arrays.clone(iv));
        this.keyLength = new ASN1Integer(keyLength);
    }

    private CAST5CBCParameters(
        ASN1Sequence  seq)
    {
        iv = (ASN1OctetString)seq.getObjectAt(0);
        keyLength = (ASN1Integer)seq.getObjectAt(1);
    }

    public byte[] getIV()
    {
        return Arrays.clone(iv.getOctets());
    }

    public int getKeyLength()
    {
        return keyLength.intValueExact();
    }

    /**
     * Produce an object suitable for an ASN1OutputStream.
     *      * cast5CBCParameters ::= SEQUENCE {
     *                           iv         OCTET STRING DEFAULT 0,
     *                                  -- Initialization vector
     *                           keyLength  INTEGER
     *                                  -- Key length, in bits
     *                      }
     * 
     */
    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector v = new ASN1EncodableVector(2);

        v.add(iv);
        v.add(keyLength);

        return new DERSequence(v);
    }
}