semaphore-protocol / semaphore.js Goto Github PK

Describe the feature you'd like

The @semaphore-protocol/group package has a Group class to create off-chain Semaphore groups, but it still doesn't allow to update group members. An update method is quite simple to implement, as @zk-kit/incremental-merkle-tree already has an update method.

Describe the package you'd like
The package could abstract some parameters and functions of @zk-kit/incremental-merkle-tree to make it easier to create and manage off-chain groups. Future features could allow the package to store large groups using different storage systems (e.g., MongoDB, IPFS).

Additional context
@semaphore-protocol/group can also be used by @semaphore-protocol/proof to automatically generate the Merkle proof inside the generateProof function. This can reduce the number of steps in the generation phase of zero-knowledge Semaphore proofs.

...

const group = new Group()
group.addMembers(identityCommitments)

...

const fullProof = await generateProof(identity, group, externalNullifier, signal, {
    zkeyFilePath: "./semaphore.zkey",
    wasmFilePath: "./semaphore.wasm"
})

Describe the package you'd like

The Semaphore subgraph is very useful when it is necessary to fetch group data from contracts, particularly from the Semaphore.sol contract deployed on Kovan, Goerli and Arbitrum. In fact, to generate an off-chain proof, it is necessary to recreate the group with the @semaphore-protocol/group library, which must then be passed to the @semaphore-protocol/proof library. A JavaScript library to query the subgraph on Node.js and on browsers can further simplify the work for developers who intend to integrate Semaphore.