package org.bouncycastle.x509;import org.bouncycastle.asn1.ASN1Encodable;import org.bouncycastle.asn1.ASN1EncodableVector;import org.bouncycastle.asn1.ASN1Set;import org.bouncycastle.asn1.DERObject;import org.bouncycastle.asn1.DERObjectIdentifier;import org.bouncycastle.asn1.DERSet;import org.bouncycastle.asn1.x509.Attribute;/** * Class for carrying the values in an X.509 Attribute. */public class X509Attribute    extends ASN1Encodable{    Attribute    attr;        /**     * @param at an object representing an attribute.     */    X509Attribute(        ASN1Encodable   at)    {        this.attr = Attribute.getInstance(at);    }    /**     * Create an X.509 Attribute with the type given by the passed in oid and     * the value represented by an ASN.1 Set containing value.     *      * @param oid type of the attribute     * @param value value object to go into the atribute's value set.     */    public X509Attribute(        String          oid,        ASN1Encodable   value)    {        this.attr = new Attribute(new DERObjectIdentifier(oid), new DERSet(value));    }        /**     * Create an X.59 Attribute with the type given by the passed in oid and the     * value represented by an ASN.1 Set containing the objects in value.     *      * @param oid type of the attribute     * @param value vector of values to go in the attribute's value set.     */    public X509Attribute(        String              oid,        ASN1EncodableVector value)    {        this.attr = new Attribute(new DERObjectIdentifier(oid), new DERSet(value));    }        public String getOID()    {        return attr.getAttrType().getId();    }        public ASN1Encodable[] getValues()    {        ASN1Set         s = attr.getAttrValues();        ASN1Encodable[] values = new ASN1Encodable[s.size()];                for (int i = 0; i != s.size(); i++)        {            values[i] = (ASN1Encodable)s.getObjectAt(i);        }                return values;    }        public DERObject toASN1Object()    {        return attr.toASN1Object();    }}