1 files changed, 88 insertions, 0 deletions
diff --git a/crypto/src/asn1/cms/ContentInfo.cs b/crypto/src/asn1/cms/ContentInfo.cs
new file mode 100644
index 000000000..278ceca46
--- /dev/null
+++ b/crypto/src/asn1/cms/ContentInfo.cs
@@ -0,0 +1,88 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.Cms
+{
+    public class ContentInfo
+        : Asn1Encodable
+    {
+        private readonly DerObjectIdentifier	contentType;
+        private readonly Asn1Encodable			content;
+
+        public static ContentInfo GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is ContentInfo)
+                return (ContentInfo) obj;
+
+            if (obj is Asn1Sequence)
+                return new ContentInfo((Asn1Sequence) obj);
+
+            throw new ArgumentException("unknown object in factory: " + obj.GetType().Name);
+        }
+
+        public static ContentInfo GetInstance(Asn1TaggedObject obj, bool isExplicit)
+        {
+            return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
+        }
+
+        private ContentInfo(
+            Asn1Sequence seq)
+        {
+            if (seq.Count < 1 || seq.Count > 2)
+                throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
+
+            contentType = (DerObjectIdentifier) seq[0];
+
+            if (seq.Count > 1)
+            {
+                Asn1TaggedObject tagged = (Asn1TaggedObject) seq[1];
+                if (!tagged.IsExplicit() || tagged.TagNo != 0)
+                    throw new ArgumentException("Bad tag for 'content'", "seq");
+
+                content = tagged.GetObject();
+            }
+        }
+
+        public ContentInfo(
+            DerObjectIdentifier	contentType,
+            Asn1Encodable		content)
+        {
+            this.contentType = contentType;
+            this.content = content;
+        }
+
+        public DerObjectIdentifier ContentType
+        {
+            get { return contentType; }
+        }
+
+        public Asn1Encodable Content
+        {
+            get { return content; }
+        }
+
+        /**
+         * Produce an object suitable for an Asn1OutputStream.
+         * <pre>
+         * ContentInfo ::= Sequence {
+         *          contentType ContentType,
+         *          content
+         *          [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL }
+         * </pre>
+         */
+        public override Asn1Object ToAsn1Object()
+        {
+            Asn1EncodableVector v = new Asn1EncodableVector(contentType);
+
+            if (content != null)
+            {
+                v.Add(new BerTaggedObject(0, content));
+            }
+
+            return new BerSequence(v);
+        }
+    }
+}