Post-quantum cryptographic schemes have been developed in the last decade in response to the rise of quantum computers.
So why do we need to worry now about the threat of quantum computers?
Why not continue to focus on RSA and ECDSA? If someone announces the successful construction of a large quantum computer fifteen years from now, why not simply switch to McEliece etc. fifteen years from now?
Please let me know about it.? By introducing the References.?
The point is that if you have something that needs to be secure for (say) 15 years, you cannot simply switch to a new technology in 10 years - if quantum computers are available then, your assets will be compromised. Nobody can tell when quantum computing will be available, so we are all just gambling that it will NOT be available for as long as we need our RSA signatures to be secure.
Dear Davood,
The study shows that: we are not ready yet to implement any post-quantum cryptographic scheme in practical embedded systems.
There is still a considerable amount of research that needs to be conducted before reaching a satisfactory level of security.
Please look at this :
Post-Quantum Cryptography
ISBN: 978-3-540-88701-0
Daniel J. Bernstein ·Johannes Buchmann . Erik Dahmen
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