Support for other chains

[boo_0x]

Hello, I have used the web SDK with the Polkadot chain, but in the Flutter documentation I only see the Ethereum and Solana options, and no options for other chains. Can the Flutter SDK be used with other chains as long as they use ED25519 or SECP256K1 curves for account generation?

[vjgee]

@boo_0x Welcome Aboard!

The Flutter SDK supports all blockchains following the secp256k1 & ed25519 curves . Please follow our reference for Ethereum, and similarly use corresponding blockchain libraries that support the platforms to use the private key and make blockchain calls accordingly.

For Polkadot, we will use the libraries @polkadot/keyring and @polkadot/util-crypto to create the Polkadot address.

// Polkadot
import { Keyring } from "@polkadot/api";
import { cryptoWaitReady } from "@polkadot/util-crypto";

/*
  Use code from the above Initializing Provider here
*/

const keyring = new Keyring({ ss58Format: 42, type: "sr25519" });
const privateKey = provider.request({ method: "eth_private_key" });

const keyPair = keyring.addFromUri("0x" + privateKey);
const address = keyPair.address;

For multi-chain support, you can refer to this documentation:

Integrate Web3Auth with Multiple Chains | Documentation | Web3Auth