1 files changed, 20 insertions, 0 deletions
diff --git a/crypto/src/tls/MaxFragmentLength.cs b/crypto/src/tls/MaxFragmentLength.cs
new file mode 100644
index 000000000..d335de5c5
--- /dev/null
+++ b/crypto/src/tls/MaxFragmentLength.cs
@@ -0,0 +1,20 @@
+using System;
+
+namespace Org.BouncyCastle.Tls
+{
+    public abstract class MaxFragmentLength
+    {
+        /*
+         * RFC 3546 3.2.
+         */
+        public const short pow2_9 = 1;
+        public const short pow2_10 = 2;
+        public const short pow2_11 = 3;
+        public const short pow2_12 = 4;
+
+        public static bool IsValid(short maxFragmentLength)
+        {
+            return maxFragmentLength >= pow2_9 && maxFragmentLength <= pow2_12;
+        }
+    }
+}