1 files changed, 72 insertions, 0 deletions
diff --git a/crypto/src/asn1/cmp/CertAnnContent.cs b/crypto/src/asn1/cmp/CertAnnContent.cs
new file mode 100644
index 000000000..df0188746
--- /dev/null
+++ b/crypto/src/asn1/cmp/CertAnnContent.cs
@@ -0,0 +1,72 @@
+using System;
+using System.IO;
+
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cmp
+{
+    /**
+     *  CertAnnContent ::= CMPCertificate
+     */
+    public class CertAnnContent
+        : CmpCertificate
+    {
+        public static CertAnnContent GetInstance(object obj)
+        {
+            // TODO[cmp]
+            if (obj == null)
+                return null;
+
+            if (obj is CertAnnContent content)
+                return content;
+
+            if (obj is CmpCertificate cmpCertificate)
+                return GetInstance(cmpCertificate.GetEncoded());
+
+            if (obj is byte[] bs)
+            {
+                try
+                {
+                    obj = Asn1Object.FromByteArray(bs);
+                }
+                catch (IOException)
+                {
+                    throw new ArgumentException("Invalid encoding in CertAnnContent");
+                }
+            }
+
+            if (obj is Asn1Sequence)
+                return new CertAnnContent(X509CertificateStructure.GetInstance(obj));
+
+            // TODO[cmp]
+            if (obj is Asn1TaggedObject taggedObject)
+                return new CertAnnContent(taggedObject.TagNo, taggedObject.GetObject());
+
+            throw new ArgumentException("Invalid object: " + Platform.GetTypeName(obj), nameof(obj));
+        }
+
+        public static CertAnnContent GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
+        {
+            // TODO[cmp]
+            if (taggedObject == null)
+                return null;
+
+            if (!declaredExplicit)
+                throw new ArgumentException("tag must be explicit");
+
+            // TODO[cmp]
+            return GetInstance(taggedObject.GetObject());
+        }
+
+        public CertAnnContent(int type, Asn1Object otherCert)
+            : base(type, otherCert)
+        {
+        }
+
+        public CertAnnContent(X509CertificateStructure x509v3PKCert)
+            : base(x509v3PKCert)
+        {
+        }
+    }
+}