Class ASN1GeneralizedTime

java.lang.Object
org.bouncycastle.asn1.ASN1Object
org.bouncycastle.asn1.ASN1Primitive
org.bouncycastle.asn1.ASN1GeneralizedTime
All Implemented Interfaces:
ASN1Encodable, Encodable
Direct Known Subclasses:
DERGeneralizedTime
public class ASN1GeneralizedTime extends ASN1Primitive
Base class representing the ASN.1 GeneralizedTime type.

The main difference between these and UTC time is a 4 digit year.

One second resolution date+time on UTC timezone (Z) with 4 digit year (valid from 0001 to 9999).

Timestamp format is: yyyymmddHHMMSS'Z'

X.690

This is what is called "restricted string", and it uses ASCII characters to encode digits and supplemental data.

11: Restrictions on BER employed by both CER and DER

11.7 GeneralizedTime

11.7.1 The encoding shall terminate with a "Z", as described in the ITU-T Rec. X.680 | ISO/IEC 8824-1 clause on GeneralizedTime.

11.7.2 The seconds element shall always be present.

11.7.3 The fractional-seconds elements, if present, shall omit all trailing zeros; if the elements correspond to 0, they shall be wholly omitted, and the decimal point element also shall be omitted.

  • Constructor Details

    • ASN1GeneralizedTime

      public ASN1GeneralizedTime(String time)
      The correct format for this is YYYYMMDDHHMMSS[.f]Z, or without the Z for local time, or Z+-HHMM on the end, for difference between local time and UTC time. The fractional second amount f must consist of at least one number with trailing zeroes removed.
      Parameters:
      time - the time string.
      Throws:
      IllegalArgumentException - if String is an illegal format.

    • ASN1GeneralizedTime

      public ASN1GeneralizedTime(Date time)
      Base constructor from a java.util.date object
      Parameters:
      time - a date object representing the time of interest.

    • ASN1GeneralizedTime

      public ASN1GeneralizedTime(Date time, Locale locale)
      Base constructor from a Date and an explicit Locale. The locale selects the calendar used by the underlying SimpleDateFormat. Most callers should prefer the simple ASN1GeneralizedTime(Date) form, which always formats under an English Gregorian locale (so the encoded year is the spec-mandated Gregorian one regardless of Locale.getDefault(), including on JVMs whose default uses a non-Gregorian calendar such as Thai Buddhist th_TH_TH_#u-nu-thai or Japanese Imperial ja_JP_JP_#u-ca-japanese). Reach for this (Date, Locale) form only when you need explicit control over the formatter's calendar.
      Parameters:
      time - a date object representing the time of interest.
      locale - the Locale whose calendar the underlying SimpleDateFormat should use.

  • Method Details

    • getInstance

      public static ASN1GeneralizedTime getInstance(Object obj)
      return a generalized time from the passed in object
      Parameters:
      obj - an ASN1GeneralizedTime or an object that can be converted into one.
      Returns:
      an ASN1GeneralizedTime instance, or null.
      Throws:
      IllegalArgumentException - if the object cannot be converted.

    • getInstance

      public static ASN1GeneralizedTime getInstance(ASN1TaggedObject taggedObject, boolean declaredExplicit)
      return a Generalized Time object from a tagged object.
      Parameters:
      taggedObject - the tagged object holding the object we want
      declaredExplicit - true if the object is meant to be explicitly tagged false otherwise.
      Returns:
      an ASN1GeneralizedTime instance.
      Throws:
      IllegalArgumentException - if the tagged object cannot be converted.

    • getTagged

      public static ASN1GeneralizedTime getTagged(ASN1TaggedObject taggedObject, boolean declaredExplicit)

    • getTimeString

      public String getTimeString()
      Return the time.
      Returns:
      The time string as it appeared in the encoded object.

    • getTime

      public String getTime()
      return the time - always in the form of YYYYMMDDhhmmssGMT(+hh:mm|-hh:mm).

      Normally in a certificate we would expect "Z" rather than "GMT", however adding the "GMT" means we can just use: 

          dateF = new SimpleDateFormat("yyyyMMddHHmmssz");
      To read in the time and get a date which is compatible with our local time zone.
      Returns:
      a String representation of the time.

    • getDate

      public Date getDate() throws ParseException
      Throws:
      ParseException

    • hasFractionalSeconds

      protected boolean hasFractionalSeconds()

    • hasSeconds

      protected boolean hasSeconds()

    • hasMinutes

      protected boolean hasMinutes()

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in class ASN1Primitive