1 files changed, 43 insertions, 0 deletions
diff --git a/Crypto/src/crypto/paddings/BlockCipherPadding.cs b/Crypto/src/crypto/paddings/BlockCipherPadding.cs
new file mode 100644
index 000000000..33a5f9f0f
--- /dev/null
+++ b/Crypto/src/crypto/paddings/BlockCipherPadding.cs
@@ -0,0 +1,43 @@
+using System;
+using Org.BouncyCastle.Crypto;
+using Org.BouncyCastle.Security;
+
+
+namespace Org.BouncyCastle.Crypto.Paddings
+{
+    /**
+     * Block cipher padders are expected to conform to this interface
+     */
+    public interface IBlockCipherPadding
+    {
+        /**
+         * Initialise the padder.
+         *
+         * @param param parameters, if any required.
+         */
+        void Init(SecureRandom random);
+            //throws ArgumentException;
+
+        /**
+         * Return the name of the algorithm the cipher implements.
+         *
+         * @return the name of the algorithm the cipher implements.
+         */
+        string PaddingName { get; }
+
+		/**
+         * add the pad bytes to the passed in block, returning the
+         * number of bytes added.
+         */
+        int AddPadding(byte[] input, int inOff);
+
+        /**
+         * return the number of pad bytes present in the block.
+         * @exception InvalidCipherTextException if the padding is badly formed
+         * or invalid.
+         */
+        int PadCount(byte[] input);
+        //throws InvalidCipherTextException;
+    }
+
+}