xls97.decrypt - Missing type attribute

[wit0k]

Hello,

The file .../site-packages/msoffcrypto/format/xls97.py:

class Xls97File has a problem in "decrypt" function.

Sometimes it fails on "if self.type ==" when self has NO "type" attribute...

A nasty workaround is to try it within Try catch, before real evaluation and return if it fails, but it would be nice to prevent it in code which populates the type...

Thx

[nolze]

Thank you for reporting!
Now msoffcrypto.exceptions.DecryptionError is raised for that (in master, not yet released.) (e6f1a34#diff-d56dcacb58a9b50a4ea6d4e6dda0e5e4907bc8071795b15ca9f9472a93035158R589)
Note that msoffcrypto supports only RC4 and RC4 CryptoAPI encryptions for xls. Let me know if you're working on something else.

[wit0k]

Thank you.

[nolze]

Released in v5.0.0.