diff --git a/sk1/compressor.h b/sk1/compressor.h
index e69de29..84e3f83 100644
--- a/sk1/compressor.h
+++ b/sk1/compressor.h
@@ -0,0 +1,10 @@
+#ifndef COMPRESSOR_H
+#define COMPRESSOR_H
+
+#define BUFFER_SIZE 1024
+#define LZ78_DICT_SIZE 256
+
+int compress(const char* input_file_name, const char* output_file_name);
+int decompress(const char* input_file_name, const char* output_file_name);
+
+#endif // COMPRESSOR_H