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educatedguesswork.org | ||
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www.schneier.com
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| | | | | Apple's NeuralHash algorithm-the one it's using for client-side scanning on the iPhone-has been reverse-engineered. Turns out it was already in iOS 14.3, and someone noticed: Early tests show that it can tolerate image resizing and compression, but not cropping or rotations. We also have the first collision: two images that hash to the same value. The next step is to generate innocuous images that NeuralHash classifies as prohibited content. This was a bad idea from the start, and Apple never seemed to consider the adversarial context of the system as a whole, and not just the cryptography... | |
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soatok.blog
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| | | | | Programmers don't understand hash functions, and I can demonstrate this to most of the people that will read this with a single observation: When you saw the words "hash function" in the title, you might have assumed this was going to be a blog post about password storage. (Passwords are the most common knee-jerk reaction... | |
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dgroshev.com
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| | | | | [AI summary] The author discusses the challenges and solutions for implementing a secure, privacy-preserving BitTorrent connectivity testing tool using cryptographic techniques like asymmetric encryption and HMAC to protect user IP addresses. | |
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staydecent.ca
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