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cryptography

Five mountain landscapes on floating scrolls representing possible cryptographic worlds.
cryptography

Which Computational Universe Do We Live In?

By Erica Klarreich
April 18, 2022
Read Later

Cryptographers want to know which of five possible worlds we inhabit, which will reveal whether truly secure cryptography is even possible.

Illustration of a figure standing between broken orange walls and a blue unbreakable wall with a broken sledgehammer beside it
computational complexity

Researchers Identify ‘Master Problem’ Underlying All Cryptography

By Erica Klarreich
April 6, 2022
Read Later

The existence of secure cryptography depends on one of the oldest questions in computational complexity.

cryptography

Cryptographers Achieve Perfect Secrecy With Imperfect Devices

By Mordechai Rorvig
February 25, 2022
Read Later

For the first time, experiments demonstrate the possibility of sharing secrets with perfect privacy — even when the devices used to share them cannot be trusted.

computer security

Computer Scientists Achieve ‘Crown Jewel’ of Cryptography

By Erica Klarreich
November 10, 2020
Read Later

A cryptographic master tool called indistinguishability obfuscation has for years seemed too good to be true. Three researchers have figured out that it can work.

Photo of Ronald Rivest sitting in his office
Q&A

Cryptography Pioneer Seeks Secure Elections the Low-Tech Way

By Susan D'Agostino
March 12, 2020
Read Later

Ronald Rivest helped come up with the RSA algorithm, which safeguards online commerce. Now he’s hoping to make democratic elections more trustworthy.

Art for "Cryptography That Can’t Be Hacked"
computer security

Cryptography That Is Provably Secure

By Kevin Hartnett
April 2, 2019
Read Later

Researchers have just released hacker-proof cryptographic code — programs with the same level of invincibility as a mathematical proof.

Illustration of lock with polynomials surrounding it
Abstractions blog

Mathematicians Seal Back Door to Breaking RSA Encryption

By Kevin Hartnett
December 17, 2018
Read Later

Digital security depends on the difficulty of factoring large numbers. A new proof shows why one method for breaking digital encryption won’t work.

Photo of Urmila Mahadev
quantum computing

Graduate Student Solves Quantum Verification Problem

By Erica Klarreich
October 8, 2018
Read Later

Urmila Mahadev spent eight years in graduate school solving one of the most basic questions in quantum computation: How do you know whether a quantum computer has done anything quantum at all?

Abstractions blog

Why Quantum Computers Might Not Break Cryptography

By Mark Kim-Mulgrew
May 15, 2017
Read Later

A new paper claims that a common digital security system could be tweaked to withstand attacks even from a powerful quantum computer.


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