This might be the same question as this, but unfortunately it’s private:
Basically we want to sign a PDF file with a certificate stored in the Azure Key Vault.
We know that it’s possible to export the certificate first and then sign it,
but we would really like to keep the certificate in Azure, as it’s more secure than downloading it.
There is a blog post describing that you’d need to implement “IExternalSignature” interface for that.
Does Aspose or GroupDocs provide such an interface implementation that we could use to make the signing call to Azure?
Or is there some other method that would support such a scenario?