E PLN : Spreadsheet is password encrypted

[Christophe De Clercq <cdc9220 gmail com>]

Hi,

I found some legacy "planperfect" spreadsheets on an old family computer.

Unfortunately the  file are password protected.

Is there a way via ssconvert (linux or windows) to pass a password string via the command-line.

In this way I might be able to find (brute force) the password.

I tried:

cdc ubuntu:/tmp$ ssconvert  --import-type Gnumeric_plan_perfect:pln --export-type Gnumeric_Excel:xlsx2  TESTCDC.PLN testcdc.xlsx 

(ssconvert:13147): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(ssconvert:13147): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

E PLN : Spreadsheet is password encrypted

Thanks in advance for any help or hints...

Christophe