SHA 256 is an algorithm that takes a digital input of any length and returns a string of 256 bits (typically converted to 64 hexadecimal digits). It's a one-way algorithm, which means there's no known way to practically retrieve the input from the output. As far as anyone knows, there has never been an instance of two different inputs having the same output, which means the hash of an input is a reliable unique digital fingerprint.
In this 6-minute video, Matthew Weathers explains why SHA 256 is "useful for digital signatures, cryptography, authentication, and is a central part of the Bitcoin protocol."
Face-synthesizing algorithms often struggle with facial details like eyes and teeth. These features sometimes get pinned to a fixed spot as a head turns, resulting in an uncanny valley dweller. A new algorithm, StyleGAN2, fixes this problem and produces “eye-poppingly detailed and correct images.” It can also generate never-before-seen cars, churches, and animals. Image: YouTube
Nathan Yau created this fun and fascinating name guessing algorithm. You select “male” or “female,” the decade you were born, and then type in the first letter of your name. I tried more than a dozen times for people I know and it nailed it on the first letter about 80% of the time. On […]
YouTuber CGP Grey is known for breaking down complex subjects so that they can be understood by just about anyone. His most recent animated video is no exception. In it, he answers the question, “How do all the algorithms around us learn to do their jobs?,” ie. how do machines learn? Good stuff. He’s even […]
Gather round, young and old — and hear tales of bygone days. Back in olden times, citizens would mass at a house of coffee, wherein skilled java alchemists would concoct special blends and apply artisanal wizardry to make each steaming chalice an appointment for the taste buds. Granted, said wizards, once known as baristas, were […]
Whether it was Bach or Chopin, Ray Charles or Jerry Lee Lewis, Stevie Wonder, Elton John, Alicia Keys or Norah Jones, there was someone whose mastery on the piano made you think, wow, I wish I knew how to do that. It’s a singular, almost timeless skill — and if you love music, there’s no […]
With everything happening now, even the most jaded among us are bound to feel some pangs of anxiety now and again. It’s a crazy time. When we crawl into bed each night, it’s common for our brains to go into overdrive and start thinking — and worrying — about what’s going on and what’s to […]