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A GWT cryptography library ported from Legion of the Bouncy Castle.
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package org.bouncycastle.asn1.x509;
import java.util.Calendar;
import java.util.Date;
import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.ASN1GeneralizedTime;
import org.bouncycastle.asn1.ASN1UTCTime;
public class Time
extends ASN1Object
implements ASN1Choice
{
ASN1Primitive time;
public static Time getInstance(
ASN1TaggedObject obj,
boolean explicit)
{
return getInstance(obj.getObject()); // must be explicitly tagged
}
public Time(
ASN1Primitive time)
{
if (!(time instanceof ASN1UTCTime)
&& !(time instanceof ASN1GeneralizedTime))
{
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.
*/
public Time(
Date date)
{
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int year = calendar.get(Calendar.YEAR);
if (year < 1950 || year > 2049)
{
time = new ASN1GeneralizedTime(date);
}
else
{
time = new ASN1UTCTime(date);
}
}
public static Time getInstance(
Object obj)
{
if (obj == null || obj instanceof Time)
{
return (Time)obj;
}
else if (obj instanceof ASN1UTCTime)
{
return new Time((ASN1UTCTime)obj);
}
else if (obj instanceof ASN1GeneralizedTime)
{
return new Time((ASN1GeneralizedTime)obj);
}
throw new IllegalArgumentException("unknown object in factory: " + obj.getClass().getName());
}
public String getTime()
{
if (time instanceof ASN1UTCTime)
{
return ((ASN1UTCTime)time).getAdjustedTime();
}
else
{
return ((ASN1GeneralizedTime)time).getTime();
}
}
public Date getDate()
{
if (time instanceof ASN1UTCTime)
{
return ((ASN1UTCTime)time).getAdjustedDate();
}
else
{
return ((ASN1GeneralizedTime)time).getDate();
}
}
/**
* Produce an object suitable for an ASN1OutputStream.
*
* Time ::= CHOICE {
* utcTime UTCTime,
* generalTime GeneralizedTime }
*
*/
public ASN1Primitive toASN1Primitive()
{
return time;
}
public String toString()
{
return getTime();
}
}