Show HN: Tandem – An Engine for Secure Multi-Party Computation (Written in Rust) https://ift.tt/W83KVz9

Show HN: Tandem – An Engine for Secure Multi-Party Computation (Written in Rust) Tandem is a cryptographic engine for executing programs using Secure Multi-Party Computation (MPC), which allows 2 parties to compute a function without revealing their private inputs. The classic example from cryptography is the millionaires' problem, where two millionaires compute who is richer without revealing their wealth to each other. MPC has in the past been mostly confined to academia, but thanks to some recent papers has finally become fast enough for practical applications. Tandem uses Garbled Circuits, encrypted circuits consisting of boolean gates. While there have been other implementations based on these ideas, Tandem tries to provide a much better user experience than previous attempts. For example, the Tandem repo includes a server, a command line client and client libs for wasm and native architectures. To make it easier to run practical applications, programs can be written in Garble, a custom Rust-like programming language that compiles to Garbled Circuits. (The most practical application to date using Tandem is "Encryptle", a Wordle clone that runs entirely over MPC. Depending on latency, a client/server exchange takes about 400ms, which makes the UX very similar to the real Wordle, with the twist that the server cannot see the guess in plain text and the browser cannot see the solution in plain text. Instead, guess and solution are kept private and compared using MPC.) https://ift.tt/eYpAd9h November 30, 2022 at 10:58AM

Show HN: OpenStreetMap statistics that can be updated with GitHub actions https://ift.tt/pGOULlt

Show HN: OpenStreetMap statistics that can be updated with GitHub actions Hey there, I'm an OpenStreetMap enthusiast and I was curious what kind of impact the app I am using has (I use StreetComplete[1], an easy-to-use Android app to add missing information). I couldn't find data for all my questions and some were not up to date, but I found a few starting points on how to do it myself[2][3]. Soon I realized that many more interesting questions about OpenStreetMap in general could be answered with the data and I created a website ( https://ift.tt/3g0veyZ ) to show them. Since I want the data to be up to date, I added a script to update everything easily and packed it in GitHub Actions so I can update the data with a few clicks every month. If you have questions or feedback, feel free to comment here or open an issue at the repo. [1] https://ift.tt/oJZIi9y [2] https://ift.tt/pRk0WPX... [3] https://ift.tt/3HloyT0... https://ift.tt/852eNg0 November 30, 2022 at 09:09AM

Show HN: Basement – a GraphQL API for on-chain Ethereum data https://ift.tt/sKp7F1P

Show HN: Basement – a GraphQL API for on-chain Ethereum data If we want better web3 experiences, developers need better tools. RPC nodes are really good at executing transactions, however they are notoriously cumbersome to set up, and reading large chunks of data is not very efficient: To show a list of transactions and receipts, nodes have to re-execute smart contract code on entire blocks. For every read call. Not great at scale. Which is why everyone is building ETLs to move data from the chain into their own database. This GraphQL API is our first step in allowing developers to spend more time on building product, rather than ETL infrastructure. https://basement.dev/ November 30, 2022 at 05:55AM

Show HN: Glitch – open-source Twitch Like Platform https://ift.tt/BXwN4dZ

Show HN: Glitch – open-source Twitch Like Platform For builders and developers, an open-source Twitch-like esports platform for people who want to build their own live streaming solutions. Play with the online version or download the code and customize it to your needs. https://www.glitch.fun/ November 30, 2022 at 06:41AM

Show HN: I built my own minimal PHP framework https://ift.tt/Fvu2EoS

Show HN: I built my own minimal PHP framework This is a simple PHP framework I built myself from scratch with minimal dependencies from composer. It has Autowiring DI and some simple routing provided by the Slim router. The code: https://ift.tt/8SwZNLM November 30, 2022 at 02:51AM

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Show HN: A utility to reduce TypeScript errors over time https://ift.tt/pWr0LNZ

Show HN: A utility to reduce TypeScript errors over time https://ift.tt/jQuUskK November 29, 2022 at 11:04AM