1 files changed, 111 insertions, 0 deletions
diff --git a/Crypto/src/asn1/DerVisibleString.cs b/Crypto/src/asn1/DerVisibleString.cs
new file mode 100644
index 000000000..84c9caade
--- /dev/null
+++ b/Crypto/src/asn1/DerVisibleString.cs
@@ -0,0 +1,111 @@
+using System;
+using System.Text;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1
+{
+ /**
+ * Der VisibleString object.
+ */
+ public class DerVisibleString
+ : DerStringBase
+ {
+ private readonly string str;
+
+ /**
+ * return a Visible string from the passed in object.
+ *
+ * @exception ArgumentException if the object cannot be converted.
+ */
+ public static DerVisibleString GetInstance(
+ object obj)
+ {
+ if (obj == null || obj is DerVisibleString)
+ {
+ return (DerVisibleString)obj;
+ }
+
+ if (obj is Asn1OctetString)
+ {
+ return new DerVisibleString(((Asn1OctetString)obj).GetOctets());
+ }
+
+ if (obj is Asn1TaggedObject)
+ {
+ return GetInstance(((Asn1TaggedObject)obj).GetObject());
+ }
+
+ throw new ArgumentException("illegal object in GetInstance: " + obj.GetType().Name);
+ }
+
+ /**
+ * return a Visible string from a tagged object.
+ *
+ * @param obj the tagged object holding the object we want
+ * @param explicitly true if the object is meant to be explicitly
+ * tagged false otherwise.
+ * @exception ArgumentException if the tagged object cannot
+ * be converted.
+ */
+ public static DerVisibleString GetInstance(
+ Asn1TaggedObject obj,
+ bool explicitly)
+ {
+ return GetInstance(obj.GetObject());
+ }
+
+ /**
+ * basic constructor - byte encoded string.
+ */
+ public DerVisibleString(
+ byte[] str)
+ : this(Strings.FromAsciiByteArray(str))
+ {
+ }
+
+ /**
+ * basic constructor
+ */
+ public DerVisibleString(
+ string str)
+ {
+ if (str == null)
+ throw new ArgumentNullException("str");
+
+ this.str = str;
+ }
+
+ public override string GetString()
+ {
+ return str;
+ }
+
+ public byte[] GetOctets()
+ {
+ return Strings.ToAsciiByteArray(str);
+ }
+
+ internal override void Encode(
+ DerOutputStream derOut)
+ {
+ derOut.WriteEncoded(Asn1Tags.VisibleString, GetOctets());
+ }
+
+ protected override bool Asn1Equals(
+ Asn1Object asn1Object)
+ {
+ DerVisibleString other = asn1Object as DerVisibleString;
+
+ if (other == null)
+ return false;
+
+ return this.str.Equals(other.str);
+ }
+
+ protected override int Asn1GetHashCode()
+ {
+ return this.str.GetHashCode();
+ }
+ }
+}
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