My guess based on your error message is that Taint mode is on and you are not untainting $key. If you naively trust the input (I don't know context), you can fix that with:

($key) = $key =~ /(.*)/;

inserted before your $cypher2 declaration. However, if you are running in taint mode, you should likely be less trusting of your input data.

In reply to Re: taint when encrypting by kennethk
in thread taint when encrypting by rtmhal

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