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-rw-r--r--cryptrobber.sts9
1 files changed, 9 insertions, 0 deletions
diff --git a/cryptrobber.sts b/cryptrobber.sts
index 22cb06d..2668b52 100644
--- a/cryptrobber.sts
+++ b/cryptrobber.sts
@@ -124,6 +124,15 @@ set_entry float_init ; this is program with floats
swap 1 +
od drop as length
local ciphertext
+ length 0 = if
+ 'e' sys_write_err
+ 'm' sys_write_err
+ 'p' sys_write_err
+ 't' sys_write_err
+ 'y' sys_write_err
+ newline sys_write_err
+ sys_exit
+ fi
0 ; initial key is empty
do