1 files changed, 72 insertions, 0 deletions

diff --git a/crypto/src/asn1/cmp/CrlSource.cs b/crypto/src/asn1/cmp/CrlSource.cs
new file mode 100644
index 000000000..9e2526ec2
--- /dev/null
+++ b/crypto/src/asn1/cmp/CrlSource.cs
@@ -0,0 +1,72 @@
+using System;
+
+using Org.BouncyCastle.Asn1.X509;
+
+namespace Org.BouncyCastle.Asn1.Cmp
+{
+    /**
+     * GenMsg:    {id-it TBD1}, SEQUENCE SIZE (1..MAX) OF CRLStatus
+     * GenRep:    {id-it TBD2}, SEQUENCE SIZE (1..MAX) OF
+     * CertificateList  |  < absent >
+     * <p>
+     * CRLSource ::= CHOICE {
+     * dpn          [0] DistributionPointName,
+     * issuer       [1] GeneralNames }
+     * </p>
+     */
+    public class CrlSource
+        : Asn1Encodable, IAsn1Choice
+    {
+        public static CrlSource GetInstance(object obj)
+        {
+            if (obj is CrlSource crlSource)
+                return crlSource;
+
+            if (obj != null)
+                return new CrlSource(Asn1TaggedObject.GetInstance(obj));
+
+            return null;
+        }
+
+        private readonly DistributionPointName m_dpn;
+        private readonly GeneralNames m_issuer;
+
+        private CrlSource(Asn1TaggedObject taggedObject)
+        {
+            switch (taggedObject.TagNo)
+            {
+            case 0:
+                m_dpn = DistributionPointName.GetInstance(taggedObject, true);
+                m_issuer = null;
+                break;
+            case 1:
+                m_dpn = null;
+                m_issuer = GeneralNames.GetInstance(taggedObject, true);
+                break;
+            default:
+                throw new ArgumentException("unknown tag: " + Asn1Utilities.GetTagText(taggedObject));
+            }
+        }
+
+        public CrlSource(DistributionPointName dpn, GeneralNames issuer)
+        {
+            if ((dpn == null) == (issuer == null))
+                throw new ArgumentException("either dpn or issuer must be set");
+
+            m_dpn = dpn;
+            m_issuer = issuer;
+        }
+
+        public virtual DistributionPointName Dpn => m_dpn;
+
+        public virtual GeneralNames Issuer => m_issuer;
+
+        public override Asn1Object ToAsn1Object()
+        {
+            if (m_dpn != null)
+                return new DerTaggedObject(true, 0, m_dpn);
+
+            return new DerTaggedObject(true, 1, m_issuer);
+        }
+    }
+}