Encrypt the current region between START and END for RECIPIENTS.
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 should be treated, you should consider
using the string based counterpart `epg-encrypt-string', or the
file based counterpart `epg-encrypt-file' instead.
For example:
(let ((context (epg-make-context 'OpenPGP)))
(epg-encrypt-string
context
(encode-coding-string (buffer-substring start end) 'utf-8)
nil))
(fn START END RECIPIENTS SIGN SIGNERS)