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Can a simple sequential delay function leave little room for FPGA acceleration?
Sorry my post yesterday didn't explain the goal clearly. The discussion ended up going in the wrong direction because of a casual hypothetical use case I mentioned, while what I'm actually trying to build is a **time-lock encryption** tool: once …
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Sequential hardness of a MUL-XOR-shift permutation: open questions
I'd like to invite cryptanalysis of a minimal permutation proposed as a sequential delay function: ```c uint64_t slow_hash_64(uint64_t seed, uint64_t n) { while (n--) { seed *= 0xD1342543DE82EF95; seed ^= seed >> 32; } return seed; } ``` The intended …
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Use Git to store encrypted messages for a messaging app
nothing is implemented yet. this might be a dumb idea, but it seems like it might work. id like to share in case i might be overlooking something. id like to get an idea out to your guys to see …
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A Schnorr signature scheme instantiated via the Fiat-Shamir transform.
[https://github.com/LamprosM-prog/Fiat-Shamir-Signature](https://github.com/LamprosM-prog/Fiat-Shamir-Signature) The project is made in C and from scratch , with the only dependency being the GNU MP library. Any feedback is welcome
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I took the feedback on BLUE and shipped the rewrite. Looking for round 2.
[Three weeks ago I asked this sub to try to prove that BLUE (the deniability protocol in my pycryptox library) didn't work.](https://www.reddit.com/r/crypto/comments/1tdcchk/try_to_prove_that_my_denial_protocol_doesnt_work/) Two people landed clean hits, and they were right. I shipped 3.0.0 today with the fixes. Here's what …
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Any good guides/resources on creating a protocol spec?
Just as the title says. I've never created one before but I've read through a few. Im trying to use AI to learn... But I shouldn't lean on that too much because that's likely going to result in me overlooking …