Even if quantum computing turns out to actually be infeasible and classical cryptography is secure for the next millennia, it’s still a good feature to have a third independent encryption layer in the protocol. It makes it that much less likely reliant on the other two being bulletproof.
How sure are you? Assign a percentage chance to it and the cost of exposing old messages, and compare that to the cost of this dev effort.
We know governments are using it, and there’s likely a lot of sensitive data transmitted through Signal, so the cost of it happening in the next 20 years would still be substantial, so even if the chance of that timeline happening is small, there’s still value in investing in forward secrecy.
They also want nuclear fusion reactors and there is none in the horizon after 50 years of research and development (even though many want to sell the idea that there are).
You can start preparing for post hypercomputation cryptography too if you believe your argument.
Once quantum computers break classical cryptography, it’s going to be too late to develop post-quantum cryptography, mate.
The best time to develop resilience is right now.
It’s not going to happen this century, probably never
Even if quantum computing turns out to actually be infeasible and classical cryptography is secure for the next millennia, it’s still a good feature to have a third independent encryption layer in the protocol. It makes it that much less likely reliant on the other two being bulletproof.
Maybe. I don’t know at which point all that extra processing stops being worth it.
How sure are you? Assign a percentage chance to it and the cost of exposing old messages, and compare that to the cost of this dev effort.
We know governments are using it, and there’s likely a lot of sensitive data transmitted through Signal, so the cost of it happening in the next 20 years would still be substantial, so even if the chance of that timeline happening is small, there’s still value in investing in forward secrecy.
They also want nuclear fusion reactors and there is none in the horizon after 50 years of research and development (even though many want to sell the idea that there are).
You can start preparing for post hypercomputation cryptography too if you believe your argument.
https://www.cs.auckland.ac.nz/~pgut001/pubs/bollocks.pdf