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Prime Sieve as Bits

REDDIT / Alternative-Grade103 / Dec 26, 2025

In ancient of days (circa 1987-ish), I had coded a modified Sieve of Eratosthenes where single bits (rather than bytes) served as primality flags. Further, the mapping was such as to contain no bit addresses for multiples of 2, 3, …

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Concept for random numbers...

REDDIT / Alternative-Grade103 / Dec 23, 2025

Just this morning a means occurred to me for how I might generate a most extremely unpredictable pseudo-random number for encryption purposes. 1. Get the Nth pseudo-random from a fixed seed. 2. Permute it into a 64-element Knapsack key. 3. …

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SHA-3 hardware acceleration

REDDIT / bik1230 / Dec 19, 2025

Does anyone know if proper SHA-3 acceleration is on the horizon for server and consumer hardware? Right now AFAIK only z/Arch has SHA-3 fully implemented in hardware, other architectures only have specific instructions for speeding up particular operations used within …

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A new secure random number generator

REDDIT / willgilr / Dec 19, 2025

Hi everyone, I'd like to share an secure crypto random number generator I created. I'll keep this post short and sweet so here are the links... PDF about the algorithm: [https://www.gsjournal.net/Science-Journals/Research%20Papers/View/10393](https://www.gsjournal.net/Science-Journals/Research%20Papers/View/10393) Source code in Java on GitHub: [https://github.com/wgilreath/CHARIBDIS](https://github.com/wgilreath/CHARIBDIS) I had …

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New online (streaming) authenticated encryption scheme (FLOE)

REDDIT / Salusa / Dec 19, 2025

Finally I can reveal something that I've spent the last year working on! Let me present FLOE (Fast Lightweight Online Encryption). It's a new online authenticated encryption scheme which is designed to meet real world requirements. We provide a [public …

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Security World - nfast

REDDIT / TinyOstrich7999 / Dec 16, 2025

Hi Crypto, I have the typical ebay purchase HSM. I am not looking to use it securely, more of a lab learning effort. To my knowledge to get the Thales nCipher HSM to work, I need a “Security World”. I …

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