By integrating a Quantum Random Number Generator (QRNG), placed in a satellite in space, with advanced cryptography, this partnership aims to deliver a fully quantum-proof solution for using satellite to provide encrypted correlated randomness to perform Multi-Party Computation (MPC).
Using Quantum Random Number Generators (QRNG) and satellites for Secure Computation
A Quantum Random Number Generator (QRNG) can create highly secure random keys. A satellite equipped with a QRNG generates a random key and securely sends it to two parties, allowing them to communicate privately using post-quantum cryptography. This setup ensures a quantum-safe encryption method.
Beyond secure communication, the satellite can also preprocess data for Multiparty Computation (MPC). MPC calculations often require specific secret values that must remain private. Instead of generating these values during computation, we can precompute random values and store intermediate results. Later, when real inputs arrive, the preprocessed data speeds up the final calculation.
For example, in some MPC protocols, preprocessing can take 6 days and 23 hours, while the actual computation only takes 1 hour. This is because most of the data exchange happens during preprocessing. If a secure satellite continuously generates and stores these values, the entire process becomes much more efficient.
Why use a satellite?
Security: Satellites are difficult to physically access, unlike hardware servers on the ground.
Efficiency: Preprocessed computations can be performed weeks in advance, reducing real-time processing delays.
Privacy: The satellite never sees the actual data - it only generates random preprocessed values.
By leveraging QRNG-equipped satellites, a trusted, quantum-secure environment for faster and safer cryptographic computations can be created.
What is preprocessing?
In short, preprocessing is the initial stage of data processing, where raw data is prepared for analysis. It improves efficiency, accuracy, and security in various applications, including cryptography and machine learning.
This process is often time-consuming and costly. However, imagine a secure, quantum-proof machine that generates preprocessed "false" numbers. When real data needs to be processed, these false numbers can be combined with the real ones for faster calculations, reducing processing time by up to 80%.
