Interesting Engineering: Law Enforcement Secretly Ran Part of the Dark Web, Again

[grarpamp]

>> https://interestingengineering.com/law-secretly-ran-part-of-dark-web-again
> https://interestingengineering.com/11-cryptographic-methods-that-marked-history-from-the-caesar-cipher-to-enigma-code-and-beyond
> [whether ... an encryption algo ... a comms protocol ... is not backdoored]

It is known that many things have been backdoored,
many more surely are, as will many future things be.
Yet it is assumed that some things are not or will not.
It is known that composition of XOR's containing
even just one that is not backdoored, is sufficient.
But that is an estimation odds game.
Your general task is to make, find, and prove ones that are
not backdoored.
Even then, as proofs often fall, XOR among some orthagonal
risks may not be entirely unwise.