diff --git a/set1/chellenge7.sh b/set1/chellenge7.sh
index 1aedf1d..d37ff6c 100644
--- a/set1/chellenge7.sh
+++ b/set1/chellenge7.sh
@@ -1 +1,3 @@
 base64 --decode 7.txt > encrypted7.bin
+openssl enc -d -aes-128-ecb -K $(echo -n "YELLOW SUBMARINE" | xxd -p) -in encrypted7.bin -out decrypted7.txt
+cat decrypted7.txt
\ No newline at end of file