Ledger device crashes when using transfer schema v2 or v3

[brunodb3]

While implementing ledger support for the official LTO Wallet UI, I came across an issue where the ledger device just stops responding and reboots if I send a transaction using the v2 or v3 schema. Even using the proper v1 schema doesn't work, I had to modify it slightly in order to work correctly. So far I only tested with transfer transactions, not sure if it happens with other types.

We want to have latest schema support for ledger transactions, while also supporting older schemas. So v1, v2 and v3 should all work.

[iicc1]

Hello,
Only the v1 schema is currently supported. Also, the payload needs to be modified before sending the data to the Ledger device. You can check how the payload is constructed with the script located here: https://github.com/Stakely/lto-network-ledger-wallet-ui/blob/master/scripts/transactions.js

Also, there is additional data sent to the device which includes the network id and the BIP path: https://github.com/Stakely/lto-network-ledger-wallet-ui/blob/master/pages/index.vue#L527

[brunodb3]

Thank you for the response. Indeed I saw the payload is slightly different on the device, and modified my code accordingly. We want to support later versions though, so the code needs to be changed. I will mess around with this repository to see what can be done, maybe I'll create a PR with support for v2-v3 😄 Any help/feedback would be appreciated!