DERUTCTime.java
资源名称:security.rar [点击查看]
上传用户:lior1029
上传日期:2013-05-07
资源大小:209k
文件大小:4k
源码类别:
CA认证
开发平台:
Java
- package org.bouncycastle.asn1;
- import java.io.*;
- import java.util.*;
- import java.io.*;
- import java.text.*;
- /**
- * UTC time object.
- */
- public class DERUTCTime
- extends DERObject
- {
- String time;
- /**
- * return an UTC Time from the passed in object.
- *
- * @exception IllegalArgumentException if the object cannot be converted.
- */
- public static DERUTCTime getInstance(
- Object obj)
- {
- if (obj == null || obj instanceof DERUTCTime)
- {
- return (DERUTCTime)obj;
- }
- if (obj instanceof ASN1OctetString)
- {
- return new DERUTCTime(((ASN1OctetString)obj).getOctets());
- }
- throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
- }
- /**
- * return an UTC Time from a tagged object.
- *
- * @param obj the tagged object holding the object we want
- * @param explicit true if the object is meant to be explicitly
- * tagged false otherwise.
- * @exception IllegalArgumentException if the tagged object cannot
- * be converted.
- */
- public static DERUTCTime getInstance(
- ASN1TaggedObject obj,
- boolean explicit)
- {
- return getInstance(obj.getObject());
- }
- /**
- * The correct format for this is YYMMDDHHMMSSZ (it used to be that seconds were
- * never encoded. When you're creating one of these objects from scratch, that's
- * what you want to use, otherwise we'll try to deal with whatever gets read from
- * the input stream... (this is why the input format is different from the getTime()
- * method output).
- * <p>
- *
- * @param time the time string.
- */
- public DERUTCTime(
- String time)
- {
- this.time = time;
- }
- /**
- * base constructer from a java.util.date object
- */
- public DERUTCTime(
- Date time)
- {
- SimpleDateFormat dateF = new SimpleDateFormat("yyMMddHHmmss'Z'");
- dateF.setTimeZone(new SimpleTimeZone(0,"Z"));
- this.time = dateF.format(time);
- }
- DERUTCTime(
- byte[] bytes)
- {
- //
- // explicitly convert to characters
- //
- char[] dateC = new char[bytes.length];
- for (int i = 0; i != dateC.length; i++)
- {
- dateC[i] = (char)(bytes[i] & 0xff);
- }
- this.time = new String(dateC);
- }
- /**
- * return the time - always in the form of
- * YYMMDDhhmmssGMT(+hh:mm|-hh:mm).
- * <p>
- * Normally in a certificate we would expect "Z" rather than "GMT",
- * however adding the "GMT" means we can just use:
- * <pre>
- * dateF = new SimpleDateFormat("yyMMddHHmmssz");
- * </pre>
- * To read in the time and get a date which is compatible with our local
- * time zone.
- * <p>
- * <b>Note:</b> In some cases, due to the local date processing, this
- * may lead to unexpected results. If you want to stick the normal
- * convention of 1950 to 2049 use the getAdjustedTime() method.
- */
- public String getTime()
- {
- //
- // standardise the format.
- //
- if (time.length() == 11)
- {
- return time.substring(0, 10) + "00GMT+00:00";
- }
- else if (time.length() == 13)
- {
- return time.substring(0, 12) + "GMT+00:00";
- }
- else if (time.length() == 17)
- {
- return time.substring(0, 12) + "GMT" + time.substring(12, 15) + ":" + time.substring(15, 17);
- }
- return time;
- }
- /**
- * return the time as an adjusted date with a 4 digit year. This goes
- * in the range of 1950 - 2049.
- */
- public String getAdjustedTime()
- {
- String d = this.getTime();
- if (d.charAt(0) < '5')
- {
- return "20" + d;
- }
- else
- {
- return "19" + d;
- }
- }
- private byte[] getOctets()
- {
- char[] cs = time.toCharArray();
- byte[] bs = new byte[cs.length];
- for (int i = 0; i != cs.length; i++)
- {
- bs[i] = (byte)cs[i];
- }
- return bs;
- }
- void encode(
- DEROutputStream out)
- throws IOException
- {
- out.writeEncoded(UTC_TIME, this.getOctets());
- }
- public boolean equals(
- Object o)
- {
- if ((o == null) || !(o instanceof DERUTCTime))
- {
- return false;
- }
- return time.equals(((DERUTCTime)o).time);
- }
- }