Digital security depends on the difficulty of factoring large numbers. A new proof shows why one method for breaking digital encryption won’t work. My recent story for Quanta explained a newly proved ...

Nearly three decades ago, a new method for encrypting digital information transformed online security. Dubbed RSA↓ RSA stands for “Rivest–Shamir–Adleman,” the surnames of its inventors. , it exploited ...

Computer scientists in India have cracked an age-old mathematical problem by designing a method for computers to quickly prove whether a figure is a prime number--a vital step in cryptography. RSA, a ...