org.bouncycastle.asn1.eac.UnsignedInteger Maven / Gradle / Ivy

Go to download

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

The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

There is a newer version: 2.0.3

Show newest version

/***************************************************************/
/******    DO NOT EDIT THIS CLASS bc-java SOURCE FILE     ******/
/***************************************************************/
package org.bouncycastle.asn1.eac;

import java.math.BigInteger;

import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERTaggedObject;

public class UnsignedInteger
    extends ASN1Object
{
    private int tagNo;
    private BigInteger value;

    public UnsignedInteger(int tagNo, BigInteger value)
    {
        this.tagNo = tagNo;
        this.value = value;
    }

    private UnsignedInteger(ASN1TaggedObject obj)
    {
        this.tagNo = obj.getTagNo();
        this.value = new BigInteger(1, ASN1OctetString.getInstance(obj, false).getOctets());
    }

    public static UnsignedInteger getInstance(Object obj)
    {
        if (obj instanceof  UnsignedInteger)
        {
            return (UnsignedInteger)obj;
        }
        if (obj != null)
        {
            return new UnsignedInteger(ASN1TaggedObject.getInstance(obj));
        }

        return null;
    }

    private byte[] convertValue()
    {
        byte[] v = value.toByteArray();

        if (v[0] == 0)
        {
            byte[] tmp = new byte[v.length - 1];

            System.arraycopy(v, 1, tmp, 0, tmp.length);

            return tmp;
        }

        return v;
    }

    public int getTagNo()
    {
        return tagNo;
    }

    public BigInteger getValue()
    {
        return value;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return new DERTaggedObject(false, tagNo, new DEROctetString(convertValue()));
    }
}