Python script to clear sign a EIP712 message (json)

[chandraprakash]

Description

Hi Team,
I want to use a python script to clear sign a EIP712 message (json) via my ledger device.

I could use ledgerjs's signEIP712Message to clear sign a EIP712 message json.

In your repo I could see there is a python client EthAppClient with a method eip712_sign_new.

Can this client be used in production to clear sign an EIP712 message json? If yes, will be very helpful, if you could point me to an example snippet.

Alternatively, please guide me to any python (or any other supported language) equivalent of ledgerjs's signEIP712Message.

Your environment

• Device (Nano S Plus)

Apologies, if this is not the right place to raise this.

[apaillier-ledger]

Hello @chandraprakash,

Sorry for the late reply, the python client is meant for the automatic testing of the app itself, not for anything production. For example it does not use the CryptoAssetList (CAL) to retrieve signed data from Ledger, instead if signs data on the fly with a test key.
I'm afraid that it is the only existing implementation other than ledgerJS for this.

[chandraprakash]

Thanks for your response !
Is there any Python (or Rust) support to clear sign a EIP712 message planned in your road map?

[apaillier-ledger]

Not as far as I know.
This is what's on the roadmap (to eventually replace LedgerJS) : https://github.com/LedgerHQ/device-sdk-ts