bug(cast): cast wallet sign --trezor gives an "Error: operation sign_hash is not supported by the signer"

[KyrylR]

Component

Cast

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge Version: 1.0.0-stable Commit SHA: e144b82 Build Timestamp: 2025-02-13T20:02:34.979686000Z (1739476954) Build Profile: maxperf

What version of Foundryup are you on?

foundryup: 1.0.1

What command(s) is the bug in?

cast w s -t --no-hash 0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6

Operating System

macOS (Apple Silicon)

Describe the bug

I am trying to sign the hash with trezor and it says the following:
Error: operation `sign_hash` is not supported by the signer

[zerosnacks]

Hi @KyrylR

This is likely an error with the underlying Trezor client we are using through Alloy: https://github.com/trezor/trezor-firmware

Would you mind checking if you are using the latest version of the firmware?

[KyrylR]

Sure

[KyrylR]

Current version is 2.8.7, trying to install 2.8.8 manually because it is not available via Trezor app

[KyrylR]

But according the the changelog (https://github.com/trezor/trezor-firmware/blob/main/core/CHANGELOG.T2B1.md) this won't help much

[KyrylR]

@zerosnacks Without --no-hash everything works (at least it can sign the message)

[zerosnacks]

Perhaps blind signing is disabled on your device?

[KyrylR]

Where can I check that?

[zerosnacks]

On further investigation it appears Trezor has blind signing enabled by default and is unrelated to it.

I've been able to reproduce the issue on my Ledger also yielding: "Error: operation sign_hash is not supported by the signer"

https://github.com/alloy-rs/alloy/blob/88fc40338270756cc1f468319eda642cf01eb153/crates/signer-ledger/src/signer.rs#L82-L89

https://github.com/alloy-rs/alloy/blob/88fc40338270756cc1f468319eda642cf01eb153/crates/signer-trezor/src/signer.rs#L39-L47

It appears we are declaring the operation to be unsupported inside of Alloy.

I'll move this ticket over to Alloy.

[zerosnacks]

Opened the ticket here: alloy-rs/alloy#2114

Will close this one in favor of that one