1 files changed, 86 insertions, 0 deletions
diff --git a/Crypto/src/cms/RecipientInformationStore.cs b/Crypto/src/cms/RecipientInformationStore.cs
new file mode 100644
index 000000000..33b472f9d
--- /dev/null
+++ b/Crypto/src/cms/RecipientInformationStore.cs
@@ -0,0 +1,86 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Cms
+{
+ public class RecipientInformationStore
+ {
+ private readonly IList all; //ArrayList[RecipientInformation]
+ private readonly IDictionary table = Platform.CreateHashtable(); // Hashtable[RecipientID, ArrayList[RecipientInformation]]
+
+ public RecipientInformationStore(
+ ICollection recipientInfos)
+ {
+ foreach (RecipientInformation recipientInformation in recipientInfos)
+ {
+ RecipientID rid = recipientInformation.RecipientID;
+ IList list = (IList)table[rid];
+
+ if (list == null)
+ {
+ table[rid] = list = Platform.CreateArrayList(1);
+ }
+
+ list.Add(recipientInformation);
+ }
+
+ this.all = Platform.CreateArrayList(recipientInfos);
+ }
+
+ public RecipientInformation this[RecipientID selector]
+ {
+ get { return GetFirstRecipient(selector); }
+ }
+
+ /**
+ * Return the first RecipientInformation object that matches the
+ * passed in selector. Null if there are no matches.
+ *
+ * @param selector to identify a recipient
+ * @return a single RecipientInformation object. Null if none matches.
+ */
+ public RecipientInformation GetFirstRecipient(
+ RecipientID selector)
+ {
+ IList list = (IList) table[selector];
+
+ return list == null ? null : (RecipientInformation) list[0];
+ }
+
+ /**
+ * Return the number of recipients in the collection.
+ *
+ * @return number of recipients identified.
+ */
+ public int Count
+ {
+ get { return all.Count; }
+ }
+
+ /**
+ * Return all recipients in the collection
+ *
+ * @return a collection of recipients.
+ */
+ public ICollection GetRecipients()
+ {
+ return Platform.CreateArrayList(all);
+ }
+
+ /**
+ * Return possible empty collection with recipients matching the passed in RecipientID
+ *
+ * @param selector a recipient id to select against.
+ * @return a collection of RecipientInformation objects.
+ */
+ public ICollection GetRecipients(
+ RecipientID selector)
+ {
+ IList list = (IList)table[selector];
+
+ return list == null ? Platform.CreateArrayList() : Platform.CreateArrayList(list);
+ }
+ }
+}
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