FIX: fiatWithdraw invalid signature error

[NilsonCesar]

Hi everyone! Hope you're doing well and desire a happy new year!

I'm trying do a fiatWithdraw using this code: https://gist.github.com/NilsonCesar/568d93f02e4ab54bb79abcbf3f8b062e
But I am receiving this error: BadRequestError: Signature for this request is not valid.
I think that is the way to create the signature, that probably don't handle properly with aligned objects.
Has anyone have a solution to this problem?

[vasusadariya]

hey @NilsonCesar i want to work on this issue

[NilsonCesar]

Thanks! @vasusadariya
Please, let me know any progress made by you, and I'm open to collaborate with you too!

[vasusadariya]

yes @NilsonCesar thank you i have setup the repo locally and find the cause of this issue
The bug was in the RequestSigner.sign() method in utils.ts,
When generating the signature string, it was concatenating query parameters and body parameters without a separator!

[vasusadariya]

@NilsonCesar just raised the PR #547 solving the whole issue it was a one line change please review it and merge the solution.

[NilsonCesar]

Hi, @vasusadariya, thanks!
Just to clarify, it was possible withdraw? Or the error {"code":-1002,"msg":"You are not authorized to execute this request."} was thrown?

[dimitrisn442]

When there are mixed query and body params, they shouldn't be concatenated adding a & in between them. So not adding & is on purpose and is not a bug. Could you please raise the Fiat Withdraw issue with Binance Support as the signing algorithm is working fine? Closing also your PR.

[NilsonCesar]

Hi, thanks @dimitrisn442
What is the best way to raise Binance Support?

[vasusadariya]

hey @NilsonCesar sorry for the delay just go through my pr and
BadRequestError: Signature for this request is not valid
After this fix, the signature will be correctly generated, and the request will be properly authenticated.
Once the signature is valid, you might encounter

1. Success - If your API key has the required permissions:
   // Withdrawal processes successfully
2. Authorization Error - If your API key lacks permissions:
   {
   "code": -1002,
   "msg": "You are not authorized to execute this request."
   }

[dimitrisn442]

@NilsonCesar you can contact support via https://www.binance.com/en/chat?sourceEntry=33

[NilsonCesar]

In fact, it was an internal error on binance withdraw gateway.