You might be tempted to use that shiny new prime number for RSA encryption. Don't do it. RSA encryption uses the difficulty of factoring the product of two large prime numbers to make sure hackers can ...

Prime numbers are all the rage these days. I can tell something’s up when random people start asking me about the randomness of primes—without even knowing that I’m a mathematician! In the past couple ...

In 1998, Ask Ars was an early feature of the newly launched Ars Technica. Now, as then, it's all about your questions and our community's answers. We occasionally dig into our question bag, provide ...

RSA encryption hides a profound paradox at its core: security for billions of people rests on a mathematical question about ...

RSA encryption is a major foundation of digital security and is one of the most commonly used forms of encryption, and yet it operates on a brilliantly simple premise: it's easy to multiply two large ...

RSA encryption transforms an ancient unsolved mystery about prime numbers into the most widely used security system in ...

In contrast to the cooperative preparations required for setting up private key encryption, such as secret-sharing and close coordination between sender and receiver ...

A large chunk of the global economy now rests on public key cryptography. We generally agree that with long enough keys, it is infeasible to crack things encoded that way. Until such time as it isn’t, ...

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 ...

When sending your credit card number through a public medium, such as the Internet, your financial credibility may be compromised if the number is not first encrypted. It is impossible to tell who may ...