Message signing

[llbartekll]

• add personal_sign, eth_signTypedData, eth_sendTransaction signing for example app
• fix networking issue
• add description on request screen

[hewigovens]

eth_signTypedData seems not implemented correctly, we're using trust wallet core to sign typed data, if you don't mind to use it in example app

[llbartekll]

eth_signTypedData seems not implemented correctly, we're using trust wallet core to sign typed data, if you don't mind to use it in example app

We don't mind, I would appreciate your PR or code snippet how you do it in Trust Wallet.

[trwggs]

eth_signTypedData seems not implemented correctly, we're using trust wallet core to sign typed data, if you don't mind to use it in example app

We don't mind, I would appreciate your PR or code snippet how you do it in Trust Wallet.

@hewigovens do you have a snippet for the correct implementation

[hewigovens]

@trwggs Please take a look at these references

1. Encode typed message to hash https://github.com/trustwallet/wallet-core/blob/master/swift/Tests/Blockchains/EthereumAbiTests.swift#L213
2. Sign this hash https://github.com/trustwallet/trust-web3-provider/blob/master/ios/TrustWeb3Provider/DAppWebViewController.swift#L327

[trwggs]

@hewigovens thanks that worked. The encodeTyped method is very helpful