- Renamed include directory to polarssl
diff --git a/include/polarssl/arc4.h b/include/polarssl/arc4.h
new file mode 100644
index 0000000..f30743b
--- /dev/null
+++ b/include/polarssl/arc4.h
@@ -0,0 +1,51 @@
+/**
+ * \file arc4.h
+ */
+#ifndef XYSSL_ARC4_H
+#define XYSSL_ARC4_H
+
+/**
+ * \brief ARC4 context structure
+ */
+typedef struct
+{
+ int x; /*!< permutation index */
+ int y; /*!< permutation index */
+ unsigned char m[256]; /*!< permutation table */
+}
+arc4_context;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief ARC4 key schedule
+ *
+ * \param ctx ARC4 context to be initialized
+ * \param key the secret key
+ * \param keylen length of the key
+ */
+void arc4_setup( arc4_context *ctx, unsigned char *key, int keylen );
+
+/**
+ * \brief ARC4 cipher function
+ *
+ * \param ctx ARC4 context
+ * \param buf buffer to be processed
+ * \param buflen amount of data in buf
+ */
+void arc4_crypt( arc4_context *ctx, unsigned char *buf, int buflen );
+
+/*
+ * \brief Checkup routine
+ *
+ * \return 0 if successful, or 1 if the test failed
+ */
+int arc4_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* arc4.h */