New API Integration - or add digital signing to my current module ( payment gateway )

Hello,

I need API integration for a local payment method. or at least need to add digital signing of sha256 to my current module of the same payment method. please send your offer in PM if you are interested.

this is the digital signing instruction from the gateway provider.

We need your immediate cooperation to double check & confirm that the needed implementation is done as per the below:

1- If you’re using the old plugin
You need to send signature element in the request by hashing the below concatenating string in Sha256
a- Case of 1 charge item:
merchantCode + merchantrefNumber + customerProfileId(if exist) + productSKU + quantity + price(in two decimal format) + secure Key

b- Case of multiple charge items should be sorted first by sku:
merchantCode + merchantrefNumber + customerProfileId(if exist) + productSKU(of item-1) + quantity(of item-1) + price(of item-1 in two decimal format) + productSKU(of item-2) + quantity(of item-2) + price(of item-2 in two decimal format) + secure Key

Feel free to drop us an email for a quick estimate: info@antropy.co.uk

Which payment API is it? Hard to know which method is best or even if this is worth doing without some information on the gateway tbh

Hello,
Greetings

I would like to assist you with this work.

Please get in touch with below-shared contact details.

Email – ianradnor088@gmail.com
Skype – live:ianradnor088

Regards
Ian

Hello,
Greetings! I have read the job description and have relevant experience in an Opencart and am ready to help you. may I know for which version of Opencart you need and the name of payment gateway is ?
Or you can email me at: info@elderberrytech.com to discuss further.

Thanks,
Shivank Agrawal
https://elderberrytech.com/

Hello there
Greetings

I have reviewed your requirement and would be delighted to assist you with this work.

Please feel free to reach out to me using the contact details provided below to discuss this further.

E- alanjones(dot)tis(at)gmail(dot)com
Skype - live:.cid.6a62b7b34d1aa390

looking forward to hearing from you

Regards
Alan Jones

Hi,
If you still need a developer, I would be glad to help you with this issue.
You can contact me via WhatsApp.
Kind Regards,
Gokay Demir.