Various ASN.1 updates from Java API

1 files changed, 103 insertions, 0 deletions

diff --git a/crypto/src/asn1/DerGraphicString.cs b/crypto/src/asn1/DerGraphicString.cs
new file mode 100644
index 000000000..f213f461d
--- /dev/null
+++ b/crypto/src/asn1/DerGraphicString.cs
@@ -0,0 +1,103 @@
+using System;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1
+{
+    public class DerGraphicString
+        : DerStringBase
+    {
+        private readonly byte[] mString;
+
+        /**
+         * return a Graphic String from the passed in object
+         *
+         * @param obj a DerGraphicString or an object that can be converted into one.
+         * @exception IllegalArgumentException if the object cannot be converted.
+         * @return a DerGraphicString instance, or null.
+         */
+        public static DerGraphicString GetInstance(object obj)
+        {
+            if (obj == null || obj is DerGraphicString)
+            {
+                return (DerGraphicString)obj;
+            }
+
+            if (obj is byte[])
+            {
+                try
+                {
+                    return (DerGraphicString)FromByteArray((byte[])obj);
+                }
+                catch (Exception e)
+                {
+                    throw new ArgumentException("encoding error in GetInstance: " + e.ToString(), "obj");
+                }
+            }
+
+            throw new ArgumentException("illegal object in GetInstance: " + Platform.GetTypeName(obj), "obj");
+        }
+
+        /**
+         * return a Graphic String 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.
+         * @return a DerGraphicString instance, or null.
+         */
+        public static DerGraphicString GetInstance(Asn1TaggedObject obj, bool isExplicit)
+        {
+			Asn1Object o = obj.GetObject();
+
+            if (isExplicit || o is DerGraphicString)
+			{
+				return GetInstance(o);
+			}
+
+            return new DerGraphicString(((Asn1OctetString)o).GetOctets());
+        }
+
+        /**
+         * basic constructor - with bytes.
+         * @param string the byte encoding of the characters making up the string.
+         */
+        public DerGraphicString(byte[] encoding)
+        {
+            this.mString = Arrays.Clone(encoding);
+        }
+
+        public override string GetString()
+        {
+            return Strings.FromByteArray(mString);
+        }
+
+        public byte[] GetOctets()
+        {
+            return Arrays.Clone(mString);
+        }
+
+        internal override void Encode(DerOutputStream derOut)
+        {
+            derOut.WriteEncoded(Asn1Tags.GraphicString, mString);
+        }
+
+        protected override int Asn1GetHashCode()
+		{
+            return Arrays.GetHashCode(mString);
+        }
+
+		protected override bool Asn1Equals(
+            Asn1Object asn1Object)
+        {
+			DerGraphicString other = asn1Object as DerGraphicString;
+
+            if (other == null)
+				return false;
+
+            return Arrays.AreEqual(mString, other.mString);
+        }
+    }
+}