following the "rabbit" on the "cables

Data encryption of optical fibre communication using pseudo-random spatial light modulation

https://www.degruyter.com/abstract/j/oere.2016.24.issue-2/oere-2016-0012/oere-2016-0012.xml

GALS System Design:
Side Channel Attack Secure Cryptographic Accelerators

https://iis-people.ee.ethz.ch/~kgf/acacia/c4.html