Quote from: Hydrogen on Today at 06:30:53 PM

Quote from: HomerF_48 on January 14, 2023, 02:06:02 PM

IBM wll have a QC of 4,000+ qubits by 2025 (in two years). It takes only 1556 qubits to break the ECDSA encryption

Our current era CPUs are only 64 bits. Why no upgrade to 128 bit CPUs?

This upgrade would be trivial and easy to implement, as it would entail merely increasing the byte length of registers. So why have 128 bit CPUs not yet emerged?

Likewise with ASICs. If it is possible to increase cryptographic function on chips, simply by extending the bit length of registers. Why have we not seen ASICs with registers that can hold a bazillion bits?

Think of engines in cars. If exotic luxury cars are known for their V-12 engines. Why not produce V-24, V-36 and V-48 engines if the goal is to produce greater horsepower and torque?

Can it be said that, at a certain point, simply adding bit length to chips and cylinders to engines produces diminishing returns.

CPU's work in binary. there is only a certain scale needed to perform certain tasks in proceeding steps of needed bits before its not really needed to use more bits per operation

what then becomes the efficiency is multl-tasking side by side.. rather than one after the other/tandum
this is where asics work better using multiple chips rather then one super chip

because asics work in just binary and hex. there is only a certain amount of processing of particular bytes needed
if you look underneath the code at the binary movements. the sha process is in allotments of 32bit form

check out https://sha256algorithm.com/
notice each W allotment is broke up into 32bit lengths

there is no need for 128bit of the "messages" are broken up into 32bit lengths

however having multiple attempts(chips) performing their own attempts side by side then multiplies the efficiency

here is the thing
when it comes to cryptographic puzzles
breaking up a 512bit message from 32bit.. to instead say 128bit. is foolishly like changing from a 16 piece jigsaw puzzle into being a 4piece jigsaw puzzle. thus it has the opposite effect.
128bit chips doing a new algo of a 512bit message becomes EASIER to reverse engineer compared to a 512bit message handling 16 pieces of 32bit