Computer scientists can prove certain programs to be error-free with the same certainty that mathematicians prove theorems.

# Articles tagged cryptography

### A Tricky Path to Quantum-Safe Encryption

In the drive to safeguard data from future quantum computers, cryptographers have stumbled upon a thin red line between security and efficiency.

### A New Design for Cryptography’s Black Box

A recent cryptographic breakthrough has proven difficult to put into practice. But new advances show how near-perfect computer security might be surprisingly close at hand.

### Perfecting the Art of Sensible Nonsense

In a watershed moment for cryptography, computer scientists have proposed a solution to a fundamental problem called “program obfuscation.”

### The Proof in the Quantum Pudding

How do you know if a quantum computer is doing what it claims? A new protocol offers a possible solution and a boost to quantum cryptography.

### Classical Computing Embraces Quantum Ideas

Computer scientists are finding that “thinking quantumly” can lead to new insights into long-standing problems in classical computer science, mathematics and cryptography, regardless of whether quantum computers ever materialize.