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A zero-knowledge protocol for anonymous interactions.

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Semaphore icon

Github license GitHub Workflow test Coveralls DeepScan grade Linter eslint Code style prettier Repository top language Commitizen friendly

Semaphore is a generic privacy layer. Leveraging zero-knowledge technology, users can prove their membership in groups and send messages (extending from votes to endorsements) off-chain or across EVM-compatible blockchains, all without revealing their personal identity.

The core of the Semaphore protocol is in the circuit logic. However, Semaphore also provides Solidity contracts and JavaScript libraries to make the steps for offchain proof creation and onchain/offchain verification easier. To learn more about Semaphore visit semaphore.pse.dev.

Important

Help Semaphore prosper by sharing your ideas with the PSE acceleration program.

πŸ“¦ Packages

Package Version Downloads
@semaphore-protocol/core NPM version Downloads
@semaphore-protocol/contracts NPM version Downloads
@semaphore-protocol/identity (docs) NPM version Downloads
@semaphore-protocol/group (docs) NPM version Downloads
@semaphore-protocol/proof (docs) NPM version Downloads
@semaphore-protocol/data (docs) NPM version Downloads
@semaphore-protocol/hardhat NPM version Downloads
@semaphore-protocol/cli NPM version Downloads
@semaphore-protocol/utils (docs) NPM version Downloads

πŸ›  Install

Clone this repository:

git clone https://github.com/semaphore-protocol/semaphore.git

Install the dependencies:

cd semaphore && yarn

And build the repository:

yarn build

πŸ“œ Usage

Copy the .env.example file as .env:

cp .env.example .env

And add your environment variables.

Code quality and formatting

Run ESLint to analyze the code and catch bugs:

yarn lint

Run Prettier to check formatting rules:

yarn format

Or to automatically format the code:

yarn format:write

Conventional commits

Semaphore uses conventional commits. A command line utility to commit using the correct syntax can be used by running:

git commit

It will also automatically check that the modified files comply with ESLint and Prettier rules.

Testing

Run Jest to test the JS libraries:

yarn test:libraries

Run Mocha to test the contracts:

yarn test:contracts

Or test everything with:

yarn test

Build libraries & compile contracts

Run Rollup and TheGraph to build all the packages and the subgraph:

yarn build

Compile the smart contracts with Hardhat:

yarn compile:contracts

Documentation (JS libraries)

Run TypeDoc to generate a documentation website for each package:

yarn docs

The output will be placed on the docs folder.

Releases

Bump a new version with:

yarn version:bump <version>
# e.g. yarn version:bump 2.0.0

It will create a commit and a git tag that will need to be pushed on the main branch. A workflow will be triggered and will publish the Semaphore packages on npm and release a new version on Github with its changelogs automatically.

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A zero-knowledge protocol for anonymous interactions.

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  • TypeScript 69.7%
  • MDX 13.4%
  • Solidity 11.3%
  • SCSS 2.2%
  • CSS 2.0%
  • JavaScript 0.8%
  • Other 0.6%