Looking for recommendations on improving the performance of importing wallets on React Native.

Using Viem / Ox —

Getting 1500ms from `mnemonicToAccount`: https://viem.sh/docs/accounts/local/mnemonicToAccount#mnemonictoaccount

Getting 300ms from `privateKeyToAccount`: https://viem.sh/docs/accounts/local/privateKeyToAccount#privatekeytoaccount

Looking for pointers to get either of these calls to at most 100ms. Understand that these are optimized in web / node / crypto context but not on React Native yet.

Most likely the bottleneck is PBKDF2 when deriving the mnemonic seed. Most libraries use noble packages without much configurability to swap to native code.

We've built an abstraction on top of noble at MetaMask that also supports using native code for PBKDF2: https://github.com/MetaMask/key-tree

In combination with something like `react-native-quick-crypto`, that may give a big speed boost!

Let me know if you want more details!

BSc in Computer Science & Software Engineer @metamask Snaps

Security, austrian school. Developing noble cryptography: audited js libraries for web3. https://paulmillr.com/noble

Yeah, I've been surprised a number of times by slowness in RN with operations that are usually free on any other device 🫠

Pbkdf 2048 is nothing. It should be like 500,000 for security. Then yes it could have been slow. 2048 must be fast anywhere. So it's RN issue. Will investigate