(1) Suggestions on how to construct such a regex?

Very difficult to avoid false positives because the last line of the key may only be a few characters.

(2) Suggestions on how to tackle the problem differently?

Text::Diff will happily work on arrays/scalars as well as files, so pre-process your inputs to remove any private keys before doing the diff - that way they are easy to identify.

In reply to Re: regex for identifying encrypted text by hippo
in thread regex for identifying encrypted text by skendric

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