1 files changed, 120 insertions, 0 deletions
diff --git a/Crypto/src/asn1/x509/Time.cs b/Crypto/src/asn1/x509/Time.cs
new file mode 100644
index 000000000..ca4e99ac7
--- /dev/null
+++ b/Crypto/src/asn1/x509/Time.cs
@@ -0,0 +1,120 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+ public class Time
+ : Asn1Encodable, IAsn1Choice
+ {
+ internal Asn1Object time;
+
+ public static Time GetInstance(
+ Asn1TaggedObject obj,
+ bool explicitly)
+ {
+ return GetInstance(obj.GetObject());
+ }
+
+ public Time(
+ Asn1Object time)
+ {
+ if (time == null)
+ throw new ArgumentNullException("time");
+
+ if (!(time is DerUtcTime) && !(time is DerGeneralizedTime))
+ {
+ throw new ArgumentException("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(
+ DateTime date)
+ {
+ string d = date.ToString("yyyyMMddHHmmss") + "Z";
+
+ int year = Int32.Parse(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 is Time)
+ return (Time) obj;
+
+ if (obj is DerUtcTime)
+ return new Time((DerUtcTime) obj);
+
+ if (obj is DerGeneralizedTime)
+ return new Time((DerGeneralizedTime) obj);
+
+ throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
+ }
+
+ public string GetTime()
+ {
+ if (time is DerUtcTime)
+ {
+ return ((DerUtcTime) time).AdjustedTimeString;
+ }
+
+ return ((DerGeneralizedTime) time).GetTime();
+ }
+
+ /// <summary>
+ /// Return our time as DateTime.
+ /// </summary>
+ /// <returns>A date time.</returns>
+ public DateTime ToDateTime()
+ {
+ try
+ {
+ if (time is DerUtcTime)
+ {
+ return ((DerUtcTime)time).ToAdjustedDateTime();
+ }
+ else
+ {
+ return ((DerGeneralizedTime)time).ToDateTime();
+ }
+ }
+ catch (FormatException e)
+ {
+ // this should never happen
+ throw new InvalidOperationException("invalid date string: " + e.Message);
+ }
+ }
+
+ /**
+ * Produce an object suitable for an Asn1OutputStream.
+ * <pre>
+ * Time ::= CHOICE {
+ * utcTime UTCTime,
+ * generalTime GeneralizedTime }
+ * </pre>
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ return time;
+ }
+
+ public override string ToString()
+ {
+ return GetTime();
+ }
+ }
+}
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