Hi, On Tue, Jul 24, 2018 at 5:35 AM, Vikas Mahato <vikasmahato0 at gmail.com> wrote: > Hello all, > > I wanted to know how can we generate the encryption key for using wit > include/oox/crypto/CryptTools.hxx classes? Well, you'll need to provide some context what exactly you want to do. CryptTools.hxx just wraps common encryption tools provided by either OpenSSL or NSS. Key generation (from a password for example) is then the complicated part that differs from an algorithm to the other. Simplest you could do is take a password, calculate the hash and use that for the key, but that wouldn't be secure at all. > Thanks, > Vikas Mahato Regards, Tomaž