1 files changed, 74 insertions, 0 deletions
diff --git a/Crypto/src/cms/SignerInformationStore.cs b/Crypto/src/cms/SignerInformationStore.cs
new file mode 100644
index 000000000..bd613843d
--- /dev/null
+++ b/Crypto/src/cms/SignerInformationStore.cs
@@ -0,0 +1,74 @@
+using System;
+using System.Collections;
+using System.IO;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Cms
+{
+    public class SignerInformationStore
+    {
+		private readonly IList all; //ArrayList[SignerInformation]
+		private readonly IDictionary table = Platform.CreateHashtable(); // Hashtable[SignerID, ArrayList[SignerInformation]]
+
+		public SignerInformationStore(
+            ICollection signerInfos)
+        {
+            foreach (SignerInformation signer in signerInfos)
+            {
+                SignerID sid = signer.SignerID;
+                IList list = (IList)table[sid];
+
+				if (list == null)
+				{
+					table[sid] = list = Platform.CreateArrayList(1);
+				}
+
+				list.Add(signer);
+            }
+
+            this.all = Platform.CreateArrayList(signerInfos);
+        }
+
+        /**
+        * Return the first SignerInformation object that matches the
+        * passed in selector. Null if there are no matches.
+        *
+        * @param selector to identify a signer
+        * @return a single SignerInformation object. Null if none matches.
+        */
+        public SignerInformation GetFirstSigner(
+            SignerID selector)
+        {
+			IList list = (IList) table[selector];
+
+			return list == null ? null : (SignerInformation) list[0];
+        }
+
+		/// <summary>The number of signers in the collection.</summary>
+		public int Count
+        {
+			get { return all.Count; }
+        }
+
+		/// <returns>An ICollection of all signers in the collection</returns>
+        public ICollection GetSigners()
+        {
+            return Platform.CreateArrayList(all);
+        }
+
+		/**
+        * Return possible empty collection with signers matching the passed in SignerID
+        *
+        * @param selector a signer id to select against.
+        * @return a collection of SignerInformation objects.
+        */
+        public ICollection GetSigners(
+            SignerID selector)
+        {
+			IList list = (IList) table[selector];
+
+            return list == null ? Platform.CreateArrayList() : Platform.CreateArrayList(list);
+        }
+    }
+}