1 files changed, 69 insertions, 0 deletions
diff --git a/crypto/src/asn1/BerSequence.cs b/crypto/src/asn1/BerSequence.cs
new file mode 100644
index 000000000..70b43fc79
--- /dev/null
+++ b/crypto/src/asn1/BerSequence.cs
@@ -0,0 +1,69 @@
+namespace Org.BouncyCastle.Asn1
+{
+	public class BerSequence
+		: DerSequence
+	{
+		public static new readonly BerSequence Empty = new BerSequence();
+
+		public static new BerSequence FromVector(
+			Asn1EncodableVector v)
+		{
+			return v.Count < 1 ? Empty : new BerSequence(v);
+		}
+
+		/**
+		 * create an empty sequence
+		 */
+		public BerSequence()
+		{
+		}
+
+		/**
+		 * create a sequence containing one object
+		 */
+		public BerSequence(
+			Asn1Encodable obj)
+			: base(obj)
+		{
+		}
+
+		public BerSequence(
+			params Asn1Encodable[] v)
+			: base(v)
+		{
+		}
+
+		/**
+		 * create a sequence containing a vector of objects.
+		 */
+		public BerSequence(
+			Asn1EncodableVector v)
+			: base(v)
+		{
+		}
+
+		/*
+		 */
+		internal override void Encode(
+			DerOutputStream derOut)
+		{
+			if (derOut is Asn1OutputStream || derOut is BerOutputStream)
+			{
+				derOut.WriteByte(Asn1Tags.Sequence | Asn1Tags.Constructed);
+				derOut.WriteByte(0x80);
+
+				foreach (Asn1Encodable o in this)
+				{
+					derOut.WriteObject(o);
+				}
+
+				derOut.WriteByte(0x00);
+				derOut.WriteByte(0x00);
+			}
+			else
+			{
+				base.Encode(derOut);
+			}
+		}
+	}
+}