1 files changed, 75 insertions, 0 deletions
diff --git a/crypto/src/asn1/x500/DirectoryString.cs b/crypto/src/asn1/x500/DirectoryString.cs
new file mode 100644
index 000000000..78ecc2663
--- /dev/null
+++ b/crypto/src/asn1/x500/DirectoryString.cs
@@ -0,0 +1,75 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.X500
+{
+	public class DirectoryString
+		: Asn1Encodable, IAsn1Choice, IAsn1String
+	{
+		private readonly DerStringBase str;
+
+		public static DirectoryString GetInstance(
+			object obj)
+		{
+			if (obj is DirectoryString)
+			{
+				return (DirectoryString) obj;
+			}
+
+			if (obj is DerStringBase)
+			{
+				if (obj is DerT61String
+					|| obj is DerPrintableString
+					|| obj is DerUniversalString
+					|| obj is DerUtf8String
+					|| obj is DerBmpString)
+				{
+					return new DirectoryString((DerStringBase) obj);
+				}
+			}
+
+			throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
+		}
+
+		public static DirectoryString GetInstance(
+			Asn1TaggedObject	obj,
+			bool				isExplicit)
+		{
+			if (!isExplicit)
+				throw new ArgumentException("choice item must be explicitly tagged");
+
+			return GetInstance(obj.GetObject());
+		}
+
+		private DirectoryString(
+			DerStringBase str)
+		{
+			this.str = str;
+		}
+
+		public DirectoryString(
+			string str)
+		{
+			this.str = new DerUtf8String(str);
+		}
+
+		public string GetString()
+		{
+			return str.GetString();
+		}
+
+		/**
+		 * <pre>
+		 *  DirectoryString ::= CHOICE {
+		 *    teletexString               TeletexString (SIZE (1..MAX)),
+		 *    printableString             PrintableString (SIZE (1..MAX)),
+		 *    universalString             UniversalString (SIZE (1..MAX)),
+		 *    utf8String                  UTF8String (SIZE (1..MAX)),
+		 *    bmpString                   BMPString (SIZE (1..MAX))  }
+		 * </pre>
+		 */
+		public override Asn1Object ToAsn1Object()
+		{
+			return str.ToAsn1Object();
+		}
+	}
+}