abustany / lcp-decrypt Goto Github PK

Hi,
LinuxMint here, with Vivlio-2.2.1.appimage (the latest available on website). After struggling quite a bit with instructions (I am FAR from being an expert at computing…), I received what I assume is the userkey (image attached).

So I typed the command
./lcp-decrypt -userKey 308201c83081b102010 […] 09b2f6432 avec.epub ohne.epub

Error message was
error: error getting content key: error decrypting key check

Is it simply because I did not identify the userkey properly?

• As a matter of fact, the epub was still in the process of opening when I identified the key (it is a 64Mo textbook with many images though).
• Also, mitmproxy reported several times
  warn: 127.0.0.1:48320: Client TLS handshake failed. The client does not trust the proxy's certificate for www.google-analytics.com (OpenSSL Error([('SSLroutines', '', 'sslv3 alert certificate unknown')]))

Would be happy to provide any other info you require to help (provided I can understand it :-/ )

Cheers for this great programme all the same!