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erc5630-snap

v0.1.5

Published

ERC-5630-style wallet ECDH helpers for MetaMask Snaps (eth_getEncryptionPublicKey + eth_performECDH).

Downloads

422

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

pierce403pierce403

Keywords

metamasksnapseip-5630erc-5630ecdhsecp256k1

Readme

ERC-5630 ECDH Snap

Implements the draft ERC-5630 JSON-RPC methods:

  • eth_getEncryptionPublicKey → returns a compressed secp256k1 public key for a given Ethereum account.
  • eth_performECDH → returns the 32-byte ECDH shared secret x-coordinate for a given account + ephemeral pubkey.

These methods are exposed to dapps via MetaMask Snaps (wallet_invokeSnap).

Install

Once published, dapps can request this snap by Snap ID:

  • npm:erc5630-snap

DDRP’s demo site has an install/playground UI:

  • https://ddrp.io/#/snap

Permissions

This snap uses:

  • endowment:rpc (dapps: true, snaps: false) to expose snap RPC methods via wallet_invokeSnap
  • snap_dialog (to show confirmations)
  • snap_getBip32Entropy (secp256k1, path prefix m/5630'/0') to derive deterministic per-account encryption keys

snap_getBip32Entropy is a high-privilege permission. Only install/build from sources you trust and only approve requests from sites you trust.

Limitations

  • Derived keys are snap-scoped (from wallet entropy + account string) and are not the account signing key.
  • If you restore a different wallet seed phrase, derived encryption keys change.