diff --git a/tp/tp1/src/ex2/lfsr.c b/tp/tp1/src/ex2/lfsr.c
index f2037ef..c8d1156 100644
--- a/tp/tp1/src/ex2/lfsr.c
+++ b/tp/tp1/src/ex2/lfsr.c
@@ -22,15 +22,16 @@ int main(int argc, char *argv[])
 	fd_in = open(argv[1],O_RDONLY);
 	fd_out = open(argv[2],O_WRONLY|O_TRUNC|O_CREAT,0600);
 	w = (unsigned char)strtol(argv[3],NULL,0);
+
 	f = ; // TODO
-	
+
 	while(1){
 		ssize_t nb = read(fd_in,&buf,1);
 		if (nb <=0)
 			break;
-		buf ^= w;
-		write(fd_out,&buf,1);
-		w=next(w,f);
+
+		// TODO
+
 	}
 	return 0;
 }