INVALID_SIGNATURE when sending a TX to the Aptos Devnet

[martinsander00]

Discord user ID

mortoncr

Describe your question in detail.

I broke my app implementation into three parts main parts: Registration, Vote, Tallying. Registration can be broken down into:

1. User signs in with Google
2. App fetches a pepper
3. App generates a ZK registration proof
4. App sends the tx via transactions.rs
5. Contract verifies the proof

Steps 1–3 work right now; at step 4 I keep getting INVALID_SIGNATURE when sending the tx to devnet. I’ve spent three days debugging against the aptos-core examples and can’t seem to spot the issue. Do you maybe have 5 minutes to take a look at my transactions.rs file to try to spot what I'm doing wrong? Is there anyone I can reach out to for this?

What error, if any, are you getting?

INVALID_SIGNATURE

What have you tried or looked at? Or how can we reproduce the error?

https://aptos.dev/en/build/smart-contracts/error-codes

I see the error but I'm not sure what is making my signature be invalid

Which operating system are you using?

macOS

Which SDK or tool are you using? (if any)

Rust SDK

Describe your environment or tooling in detail

No response