Monero support?

[kast1450]

Hi, is there any possibility of Monero (XMR) being supported in the future with custom firmware? The KeepKey firmware page on GitHub has Monero disabled in the CMakeLists for the original Trezor source and the CMake flags. I was able to build custom firmware with Monero enabled (merged Monero related updates from the Trezor source) and was able to get it pushed and running on the KeepKey but I have no way of interacting with it.

[greatwolf]

That's interesting, it would be nice if KeepKey is able to support Monero. I do have couple questions:

• Can you share a link to the branch that you built off of?
• Did you need to remove any existing features on the firmware in order to fit Monero support in there?
• Do you have any suggestions on block indexer support for xmr? Preferably with some kind of REST API support.

Actually I'm not even sure how it'll would work. There are quite a few roadblocks that spring to mind. Like for example, since Monero, as I recall, requires you to listen to and decrypt every transaction broadcasted to check if it belongs to your address or not. Checking transaction history is also hard because you kind of need the view key for that which likely means a block indexer isn't going to be able to provide that information.

Does Trezor or Ledge currently have basic send and receiving support for XMR? If so I'm curious as to how they deal with and overcome these problems?

[kast1450]

My fork is here, you can build it as normal. I didn't need to remove anything I don't think, I just enabled the build flags and updated the Monero files to the latest from Trezor's firmware. A block indexer that supports viewing of transactions using viewkeys as well as sending transactions by uploading the transaction hex can be found here

Trezor natively supports Monero hence it being in the firmware.