Mainak Biswas wrote:
Campbell Ritchie wrote:
I thought all encryption would be broken by any quantum computations.
Bruce Alspaugh wrote:. . . . Which encryption algorithms in common use today will be effectively broken . . .
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...