package org.bouncycastle.asn1.cms;

import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERGeneralizedTime;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERUTCTime;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.SimpleTimeZone;

public class Time
    extends ASN1Encodable
    implements ASN1Choice
{
    DERObject   time;

    public static Time getInstance(
        ASN1TaggedObject obj,
        boolean          explicit)
    {
        return getInstance(obj.getObject());
    }

    public Time(
        DERObject   time)
    {
        if (!(time instanceof DERUTCTime)
            && !(time instanceof DERGeneralizedTime))
        {
            throw new IllegalArgumentException("unknown object passed to Time");
        }

        this.time = time; 
    }

    
creates a time object from a given date - if the date is between 1950 and 2049 a UTCTime object is generated, otherwise a GeneralizedTime is used.
/** * creates a time object from a given date - if the date is between 1950 * and 2049 a UTCTime object is generated, otherwise a GeneralizedTime * is used. */
public Time( Date date) { SimpleTimeZone tz = new SimpleTimeZone(0, "Z"); SimpleDateFormat dateF = new SimpleDateFormat("yyyyMMddHHmmss"); dateF.setTimeZone(tz); String d = dateF.format(date) + "Z"; int year = Integer.parseInt(d.substring(0, 4)); if (year < 1950 || year > 2049) { time = new DERGeneralizedTime(d); } else { time = new DERUTCTime(d.substring(2)); } } public static Time getInstance( Object obj) { if (obj == null || obj instanceof Time) { return (Time)obj; } else if (obj instanceof DERUTCTime) { return new Time((DERUTCTime)obj); } else if (obj instanceof DERGeneralizedTime) { return new Time((DERGeneralizedTime)obj); } throw new IllegalArgumentException("unknown object in factory: " + obj.getClass().getName()); } public String getTime() { if (time instanceof DERUTCTime) { return ((DERUTCTime)time).getAdjustedTime(); } else { return ((DERGeneralizedTime)time).getTime(); } } public Date getDate() { try { if (time instanceof DERUTCTime) { return ((DERUTCTime)time).getAdjustedDate(); } else { return ((DERGeneralizedTime)time).getDate(); } } catch (ParseException e) { // this should never happen throw new IllegalStateException("invalid date string: " + e.getMessage()); } }
Produce an object suitable for an ASN1OutputStream.
Time ::= CHOICE {
            utcTime        UTCTime,
            generalTime    GeneralizedTime }
/** * Produce an object suitable for an ASN1OutputStream. * <pre> * Time ::= CHOICE { * utcTime UTCTime, * generalTime GeneralizedTime } * </pre> */
public DERObject toASN1Object() { return time; } }