Very nice “Appendix A. Introduction to TCP/IP security” on digests, hashing, encryption, asymetric/symmetric, VPN and much more
Posted by jpluimers on 2020/03/03
For me this is still a primary starting point in case I need to know something about security which has clear pictures: [WayBack] Appendix A. Introduction to TCP/IP security (sg245383.pdf/ftp://ftp.www.ibm.com/…/sg245383.pdf, thanks to Jac Las) all on one web page.
The links are to the “Digital signatures” portion, as that’s what I needed at the time, but they are just anchors in the page.
These were the diagrams I was after:
If you want much more in-depth slide then, then go for [WayBack] Cryptography, from Theory to Practice which you can find back searching for IBM “Cryptography, from Theory to Practice” or “sign then hash” or “hash then sign”.
It is very different from the equally interesting presentation
–jeroen
The Wiert Corner - irregular stream of stuff 
jac.las said
After long search I found a PDF with mentioned IBM document:
ftp://ftp.www.ibm.com/s390/brazil/downloads/info/CommServer/sg245383.pdf
Thanks for pointing it out!
jpluimers said
Thanks for adding that.