Frank Röber

Greenhorn
+ Follow
since Oct 09, 2019
Cows and Likes
Cows
Total received
0
In last 30 days
0
Total given
0
Likes
Total received
0
Received in last 30 days
0
Total given
0
Given in last 30 days
0
Forums and Threads
Scavenger Hunt
expand Ranch Hand Scavenger Hunt
expand Greenhorn Scavenger Hunt

Recent posts by Frank Röber

Campbell Ritchie wrote:
You have obviously worked in quantum computing before.



Unfortunately not. I only listened to some talks about...
1 week ago

Mainak Biswas wrote:

Campbell Ritchie wrote:

Bruce Alspaugh wrote:. . . . Which encryption algorithms in common use today will be effectively broken . . .

I thought all encryption would be broken by any quantum computations.


while this is true, there would quantum encryption coming up



To my knowledge, quantum encryption is not the answer to that problem. It's actually not a method to encrypt a payload of a reasonable size, but a procedure to transport a little secret physically to another location, e.g. by entangled photons. This secret is currently meant to be a symmetric key like AESS.

Some months ago I listened to a talk of a french QC scientist who told us that, yes, there is currently a known QC-algorithm to break AESS, but they expect only a speed-up of factor two compared to current super computers. So his recommendation was: Simply double the length of your AESS keys! And, yes, get rid of RSA...
1 week ago
Hi Jeff

I think, for the near future, QCs will not be computers which run a certain programming language. They should be thought of to be more like a certain hardware device, where you can write and read data (numbers) to/from certain channels. This shouldn't be a matter of the used language, which is run on an assisting classical (deterministic) computer.
Emulating such a hardware device is a pretty good thing to proof concepts (algorithms), but not to get productive results. If emulation would be fast enough, we wouldn't need QC at all...
I expect, that it's especially pretty difficult (tricky?) to simulate the superposition state - I wonder how they do that...

Frank
1 week ago