My book titled "Big Book of e-Signature (NAGY E-SZIGNÓ KÖNYV) - everything you wanted to know about electronic signatures but were afraid to ask" has been published. My book is in Hungarian.

I have been working in the field of PKI and electronic signatures for 12 years, and suddenly all that stuff I had collected in my head wanted to come out. I just HAD TO write this book. :)

I believe that it should be free to access knowledge. Thus, the whole book is freely available online under Creative Commons license. My book can be downloaded from here.