1 files changed, 24 insertions, 43 deletions
diff --git a/crypto/src/asn1/x500/Rdn.cs b/crypto/src/asn1/x500/Rdn.cs
index 4881d0890..069a592a5 100644
--- a/crypto/src/asn1/x500/Rdn.cs
+++ b/crypto/src/asn1/x500/Rdn.cs
@@ -8,20 +8,24 @@ namespace Org.BouncyCastle.Asn1.X500
     public class Rdn
         : Asn1Encodable
     {
-        private readonly Asn1Set values;
-
-        private Rdn(Asn1Set values)
+        public static Rdn GetInstance(object obj)
         {
-            this.values = values;
+            if (obj == null)
+                return null;
+            if (obj is Rdn rdn)
+                return rdn;
+            return new Rdn(Asn1Set.GetInstance(obj));
         }
 
-        public static Rdn GetInstance(object obj)
+        public static Rdn GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) =>
+            new Rdn(Asn1Set.GetInstance(taggedObject, declaredExplicit));
+
+        private readonly Asn1Set m_values;
+
+        private Rdn(Asn1Set values)
         {
-            if (obj is Rdn)
-                return (Rdn)obj;
-            if (null != obj)
-                return new Rdn(Asn1Set.GetInstance(obj));
-            return null;
+            // TODO Require minimum size of 1?
+            m_values = values;
         }
 
         /**
@@ -31,13 +35,13 @@ namespace Org.BouncyCastle.Asn1.X500
          * @param value RDN value.
          */
         public Rdn(DerObjectIdentifier oid, Asn1Encodable value)
+            : this(new AttributeTypeAndValue(oid, value))
         {
-            this.values = new DerSet(new DerSequence(oid, value));
         }
 
         public Rdn(AttributeTypeAndValue attrTAndV)
         {
-            this.values = new DerSet(attrTAndV);
+            m_values = new DerSet(attrTAndV);
         }
 
         /**
@@ -47,43 +51,23 @@ namespace Org.BouncyCastle.Asn1.X500
          */
         public Rdn(AttributeTypeAndValue[] aAndVs)
         {
-            this.values = new DerSet(aAndVs);
+            m_values = new DerSet(aAndVs);
         }
 
-        public virtual bool IsMultiValued
-        {
-            get { return this.values.Count > 1; }
-        }
+        public virtual bool IsMultiValued => m_values.Count > 1;
 
         /**
          * Return the number of AttributeTypeAndValue objects in this RDN,
          *
          * @return size of RDN, greater than 1 if multi-valued.
          */
-        public virtual int Count
-        {
-            get { return this.values.Count; }
-        }
-
-        public virtual AttributeTypeAndValue GetFirst()
-        {
-            if (this.values.Count == 0)
-                return null;
+        public virtual int Count => m_values.Count;
 
-            return AttributeTypeAndValue.GetInstance(this.values[0]);
-        }
+        public virtual AttributeTypeAndValue GetFirst() =>
+            m_values.Count == 0 ? null : AttributeTypeAndValue.GetInstance(m_values[0]);
 
-        public virtual AttributeTypeAndValue[] GetTypesAndValues()
-        {
-            AttributeTypeAndValue[] tmp = new AttributeTypeAndValue[values.Count];
-
-            for (int i = 0; i < tmp.Length; ++i)
-            {
-                tmp[i] = AttributeTypeAndValue.GetInstance(values[i]);
-            }
-
-            return tmp;
-        }
+        public virtual AttributeTypeAndValue[] GetTypesAndValues() =>
+            m_values.MapElements(AttributeTypeAndValue.GetInstance);
 
         /**
          * <pre>
@@ -96,9 +80,6 @@ namespace Org.BouncyCastle.Asn1.X500
          * </pre>
          * @return this object as its ASN1Primitive type
          */
-        public override Asn1Object ToAsn1Object()
-        {
-            return values;
-        }
+        public override Asn1Object ToAsn1Object() => m_values;
     }
 }