1 files changed, 26 insertions, 0 deletions
diff --git a/crypto/src/tls/DigestInputBuffer.cs b/crypto/src/tls/DigestInputBuffer.cs
new file mode 100644
index 000000000..7dd525f88
--- /dev/null
+++ b/crypto/src/tls/DigestInputBuffer.cs
@@ -0,0 +1,26 @@
+using System;
+using System.IO;
+
+using Org.BouncyCastle.Tls.Crypto;
+using Org.BouncyCastle.Utilities.IO;
+
+namespace Org.BouncyCastle.Tls
+{
+    internal class DigestInputBuffer
+        : MemoryStream
+    {
+        internal void UpdateDigest(TlsHash hash)
+        {
+            Streams.WriteBufTo(this, new TlsHashSink(hash));
+        }
+
+        /// <exception cref="IOException"/>
+        internal void CopyTo(Stream output)
+        {
+            // TODO[tls-port]
+            // NOTE: Copy data since the output here may be under control of external code.
+            //Streams.PipeAll(new MemoryStream(buf, 0, count), output);
+            Streams.WriteBufTo(this, output);
+        }
+    }
+}