Peter M. Groen / oletools

Is encrypted by msoffcrypto

Might be password like error message states, but could also be a problem
with crypto libraries (e.g. dll/so-file for cryptography not found)

Running main() within same interpreter capturing SystemExit and
sys.stdout/err always causes trouble (at least in unittest).
Fork another python process and capture from there, that is easier
and cleaner in my view.

There were cases where our own test of byte 0x15 of SummaryInformation
stream was incorrect. So leave test to the professionals ;-)

This is an interesting one since "our" old implementation of is_encrypted
claims that the embedded file is still encrypted (which it is not), but
the msoffcrypto-is_encrypted gets it right.

… detection of backspace chars (issue #358)

added md5 to rtfobj