1 files changed, 93 insertions, 0 deletions
diff --git a/crypto/src/asn1/tsp/ArchiveTimeStampSequence.cs b/crypto/src/asn1/tsp/ArchiveTimeStampSequence.cs
new file mode 100644
index 000000000..766f6704c
--- /dev/null
+++ b/crypto/src/asn1/tsp/ArchiveTimeStampSequence.cs
@@ -0,0 +1,93 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.Tsp
+{
+    /**
+     * Implementation of ArchiveTimeStampSequence type, as defined in RFC4998.
+     * <p>
+     * An ArchiveTimeStampSequence corresponds to a SEQUENCE OF ArchiveTimeStampChains and has the
+     * following ASN.1 Syntax:
+     * <p>
+     * ArchiveTimeStampSequence ::= SEQUENCE OF ArchiveTimeStampChain
+     */
+    public class ArchiveTimeStampSequence
+        : Asn1Encodable
+    {
+        /**
+         * Return an ArchiveTimestampSequence from the given object.
+         *
+         * @param obj the object we want converted.
+         * @return an ArchiveTimeStampSequence instance, or null.
+         * @throws IllegalArgumentException if the object cannot be converted.
+         */
+        public static ArchiveTimeStampSequence GetInstance(object obj)
+        {
+            if (obj == null)
+                return null;
+            if (obj is ArchiveTimeStampSequence archiveTimeStampSequence)
+                return archiveTimeStampSequence;
+            return new ArchiveTimeStampSequence(Asn1Sequence.GetInstance(obj));
+        }
+
+        public static ArchiveTimeStampSequence GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
+        {
+            return new ArchiveTimeStampSequence(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
+        }
+
+        private readonly Asn1Sequence m_archiveTimeStampChains;
+
+        private ArchiveTimeStampSequence(Asn1Sequence sequence)
+        {
+            Asn1EncodableVector vector = new Asn1EncodableVector(sequence.Count);
+
+            foreach (var element in sequence)
+            {
+                vector.Add(ArchiveTimeStampChain.GetInstance(element));
+            }
+
+            m_archiveTimeStampChains = new DerSequence(vector);
+        }
+
+        public ArchiveTimeStampSequence(ArchiveTimeStampChain archiveTimeStampChain)
+        {
+            m_archiveTimeStampChains = new DerSequence(archiveTimeStampChain);
+        }
+
+        public ArchiveTimeStampSequence(ArchiveTimeStampChain[] archiveTimeStampChains)
+        {
+            m_archiveTimeStampChains = new DerSequence(archiveTimeStampChains);
+        }
+
+        /**
+         * Returns the sequence of ArchiveTimeStamp chains that compose the ArchiveTimeStamp sequence.
+         *
+         * @return the {@link ASN1Sequence} containing the ArchiveTimeStamp chains.
+         */
+        public virtual ArchiveTimeStampChain[] GetArchiveTimeStampChains() =>
+            m_archiveTimeStampChains.MapElements(ArchiveTimeStampChain.GetInstance);
+
+        public virtual int Count => m_archiveTimeStampChains.Count;
+
+        /**
+         * Adds an {@link ArchiveTimeStampChain} to the ArchiveTimeStamp sequence.
+         *
+         * @param chain the {@link ArchiveTimeStampChain} to add
+         * @return returns the modified sequence.
+         */
+        public virtual ArchiveTimeStampSequence Append(ArchiveTimeStampChain chain)
+        {
+            Asn1EncodableVector v = new Asn1EncodableVector(m_archiveTimeStampChains.Count + 1);
+
+            foreach (var element in m_archiveTimeStampChains)
+            {
+                v.Add(element);
+            }
+
+            v.Add(chain);
+
+            return new ArchiveTimeStampSequence(new DerSequence(v));
+        }
+
+        public override Asn1Object ToAsn1Object() => m_archiveTimeStampChains;
+    }
+}