Post-quantum cryptography Updated 2025-07-16
Encryption algorithms that run on classical computers that are expected to be resistant to quantum computers.
This is notably not the case of the dominant 2020 algorithms, RSA and elliptic curve cryptography, which are provably broken by Grover's algorithm.
Post-quantum cryptography is the very first quantum computing thing at which people have to put money into.
The reason is that attackers would be able to store captured ciphertext, and then retroactively break them once and if quantum computing power becomes available in the future.
There isn't a shade of a doubt that intelligence agencies are actively doing this as of 2020. They must have a database of how interesting a given source is, and then store as much as they can given some ammount of storage budget they have available.
A good way to explain this to quantum computing skeptics is to ask them:
If I told you there is a 5% chance that I will be able to decrypt everything you write online starting today in 10 years. Would you give me a dollar to reduce that chance to 0.5%?
Post-quantum cryptography is simply not a choice. It must be done now. Even if the risk is low, the cost would be way too great.
Test data 18 Updated 2025-07-16
Spy film Updated 2025-07-16
Test data 15 Updated 2025-07-16
Test data 19 Updated 2025-07-16
Unitary group Updated 2025-07-16
Complex analogue of the orthogonal group.
One notable difference from the orthogonal group however is that the unitary group is connected "because" its determinant is not fixed to two disconnected values 1/-1, but rather goes around in a continuous unit circle. is the unit circle.
Taboola Updated 2025-07-16
Taboola is a clickbait trained neural network. Which happens to have been written by Adolf Hitler.
Genetics Updated 2025-07-16
High level DNA studies? :-)
Legendre transformation Updated 2025-07-16
This is how you transform the Lagrangian into the Hamiltonian.

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