1 files changed, 12 insertions, 0 deletions
diff --git a/crypto/src/math/field/IExtensionField.cs b/crypto/src/math/field/IExtensionField.cs
new file mode 100644
index 000000000..17f45c153
--- /dev/null
+++ b/crypto/src/math/field/IExtensionField.cs
@@ -0,0 +1,12 @@
+using System;
+
+namespace Org.BouncyCastle.Math.Field
+{
+    public interface IExtensionField
+        : IFiniteField
+    {
+        IFiniteField Subfield { get; }
+
+        int Degree { get; }
+    }
+}