cuckoo
vroom
cuckoo | vroom | |
---|---|---|
8 | 3 | |
813 | 1,225 | |
- | 2.0% | |
4.3 | 9.3 | |
6 months ago | 6 days ago | |
C++ | C++ | |
GNU General Public License v3.0 or later | BSD 2-clause "Simplified" License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
cuckoo
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mCaptcha: Open-source proof-of-work captcha for websites
Asymmetric PoW algorithms, such as Cuckoo Cycle [1] or the poorly named Equihash [2] (which is not a hash function) do not lend themselves to password hashing, since a given instance can have 0 or 1 or many solutions.
[1] https://github.com/tromp/cuckoo
[2] https://en.wikipedia.org/wiki/Equihash
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Crypto: My Part in Its Downfall
The full technical report describing the LOCKSS forerunner to bitcoin may be downloaded at [1]. Interestingly, LOCKSS used a memory bound Proof-of-Work, where both prover and verifier perform a random walk in a 1GB table. But the prover had to do this many times, to obtain some final hash with many leading zeroes. This was before the invention of asymmetric PoW systems like Cuckoo Cycle [2] where the PoW can be verified with no memory use.
[1] https://www.researchgate.net/publication/31869581_Preserving...
[2] https://github.com/tromp/cuckoo
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Is it possible a PoW that runs arbitrary algorithms?
A non-hashcash-style PoW scheme is Cuck(at)ooCycle.
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POW Captcha: a lightweight, self-hosted proof-of-work captcha
The use of scrypt as underlying hash function is a rather poor choice though, as scrypt's memory hardness makes PoW verification unnecessarily expensive.
It's perfectly possible to make a memory hard PoW that's instantly verifiable, by using something other than hashcash. Examples include Cuckoo Cycle [1], and Equihash [2].
[1] https://github.com/tromp/cuckoo
[2] https://en.wikipedia.org/wiki/Equihash
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Memory-bound trapdoor proof of work
Non-Solution #8: Cuckoo Cycle https://github.com/tromp/cuckoo Why: At least a few people have looked at it, and any attacker is far more likely to directly attack the blockchain itself, than my server (which doesn't get involved with the blockchain) Why not: The "mathematical specification" https://github.com/tromp/cuckoo/blob/master/doc/mathspec is woefully inadequate, their "C spec" focuses more on ASCII art than actual readability https://github.com/tromp/cuckoo/blob/master/doc/spec and as https://handshake.org/files/handshake.txt points out, cannot be easily adjusted in difficulty. Also, I would need to implement it from scratch, but I guess I'll have to do that anyway.
- IBM Creates First 2nm Chip
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Ask HN: What Kind of Threat Does Quantum Computing Pose to Bitcoin?
The hashcash proof-of-work scheme that bitcoin uses is vulnerable to Grover's quantum search algorithm, that can find a solution in the 2^76 search space for the current target difficulty in roughly sqrt(2^76) = 2^38 quantum hashing steps, for a 2^38 factor speedup.
Other proof-of-work schemes (e.g. finding cycles in graphs [1]) are not vulnerable to quantum speedup.
[1] https://github.com/tromp/cuckoo
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Theoretically, how much hashing power could a 'quantum computer' generate? And is any superpower close to having one yet, that we know of?
[1] https://github.com/tromp/cuckoo
vroom
- Vehicle Routing Open-Source Optimization Machine
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Make a senitient Ai that can understand humor for 150$.
have a look at this: https://github.com/VROOM-Project/vroom
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Show HN: Optimule, a free vehicle routing platform built with Open Route Service
I see, thanks!
Open Route Service [1] seems to use Vroom [2] under the hood. It seems to be based on local search with some "Solomon I1" (?) heuristic. So good heuristic routes (obtained quickly), not optimal ones.
[1] https://openrouteservice.org/
[2] https://github.com/VROOM-Project/vroom
What are some alternatives?
nodeeditor - Qt Node Editor. Dataflow programming framework
OptaPlanner - Java Constraint Solver to solve vehicle routing, employee rostering, task assignment, maintenance scheduling, conference scheduling and other planning problems.
osqp - The Operator Splitting QP Solver
openrouteservice - 🌍 The open source route planner api with plenty of features.
aperture - ⚡️L402 (Lightning HTTP 402) Reverse Proxy ⚡️
Graphhopper - Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.
2captcha-php - PHP package for easy integration with the API of 2captcha captcha solving service to bypass recaptcha, hcaptcha, funcaptcha, geetest and solve any other captchas.
hyStrath - Hypersonic / Rarefied gas dynamics code developments (GPL-3.0)
LDOGE - LITEDOGE - Proof of Stake: 2.0 Proof, of work: Scrypt
CatraMMS - Media Management System: ingestion, processing, encoding, delivery, ...
Atomic - denis bider's Atomic library (C++, for Windows)
Rapidcsv - C++ CSV parser library