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I think this won't have a great impact on the logic of the system.
![create digital signature pdf php create digital signature pdf php](https://signx.wondershare.com/images/tutorial/create-signature-upload.png)
As I'm not a coder I'm not sure if it can be implemented, I'm sure Matt has to do some changes to the code, but I don't know how hard could it be. Find a coder who writes a script wich gathers the invoice info and creates the signed and timestamped XML invoice (the XML invoice has to be customizable to meet the requirements of each country)Ģ.
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This makes sure the invoice is from you and it is created and not changed since the date of creation.ġ. He told me some useful infos to get started and he said it is quite easy to implement automatic digital signing and timestamping in PHP.Īs far as I know in the EU there are a number of rules for invoices, these are not the same in every country, but if you stick to the most secure way then your invoice will and can be accepted everywhere. I got an answer from the guy who wrote the script to digitally sign XML. If paper based invoices were enabled for the client I have to print the invoice and post it.ĭo you think this could be done? Is there a part in the process wich can't be done by WHMCS if we have the technical requirements (PHP script for signing, etc.)? WHMCS sends the invoice to the client attached to the automatic email: only PDF or PDF + XMLģ. > First of all I'm assuming that there could be an option to enable / disable e-invoices, so the client could choose between electronic and paper based invoices (this is required because an invoice should not exist in paper based format and electronic format, only one format can be used for one invoice according to the law).ġ./a - WHMCS generates PDF invoice wich is not signed and only for personal purposes (if paper based invoices are not enabled for the client the process stops here)ġ./b - If e-invoices are enabled for the client WHMCS generates an XML invoice too, wich is signed and timestamped, and it is for legal purposesĢ. Right now I'm looking for an alternate solution wich would work like this (I found a nice script wich digitally signs XML through PHP): I was investigating this issue in the last days and it seems it is quite hard to digitally sign and timestamp a PDF automatically by a Linux server. I can't remember the name of the software used to generate the PDF files right now or I'd go look at their site If this is a popular request, perhaps you can request it as a feature to sign/timestamp the initial invoice and attach it to a customers account automatically?Īs for digitally signing, I'm not sure if the software supports it.
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They can still download the generated invoice but for legal puposes you can refer to the signed/dated one in the ticket. So the best possibility might be to download the PDF and sign/timestamp it yourself, then attach it in a ticket to a customer as a permanent legal document on their file. The point of digitally signing and timestamping (as I understand it) is to prove that an invoice existed at the given date/time. and download the pdf again to view the new status. This makes it much easier to go back and modify the invoice, cancel it, mark it as paid, etc. Everytime someone clicks on the "download pdf" link, it generates a file for them to download then discards it. I don't think the timestamp option will work exactly as you need since the PDF is generated real-time.