1 files changed, 13 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/crypto/MacDerivationFunction.java b/core/src/main/java/org/spongycastle/crypto/MacDerivationFunction.java
new file mode 100644
index 00000000..0478e9a6
--- /dev/null
+++ b/core/src/main/java/org/spongycastle/crypto/MacDerivationFunction.java
@@ -0,0 +1,13 @@
+package org.spongycastle.crypto;
+
+/**
+ * base interface for general purpose Mac based byte derivation functions.
+ */
+public interface MacDerivationFunction
+    extends DerivationFunction
+{
+    /**
+     * return the MAC used as the basis for the function
+     */
+    public Mac getMac();
+}