Function: epa-verify-region

Verify the current region between START and END.

Don't use this command in Lisp programs!
Since this function operates on regions, it does some tricks such
as coding-system detection and unibyte/multibyte conversion. If
you are sure how the data in the region should be treated, you
should consider using the string based counterpart
`epg-verify-string', or the file based counterpart
`epg-verify-file' instead.

For example:

(let ((context (epg-make-context 'OpenPGP)))
(epg-verify-string context (buffer-substring start end)) 'utf-8)) (fn START END)