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-rw-r--r--guesskeylength.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/guesskeylength.c b/guesskeylength.c
index 7941a93..8b4409c 100644
--- a/guesskeylength.c
+++ b/guesskeylength.c
@@ -1,3 +1,12 @@
+/*
+ * Copyright (C) 2015 Tomasz Kramkowski <tk@the-tk.com>
+ *
+ * This program is free software. It is licensed under version 3 of the
+ * GNU General Public License.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see [http://www.gnu.org/licenses/].
+ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>