Hello List! I’ve got an implementation of pdfbox digital signing working fabulously with a self signed cert based on the examples provided. We are trying to switch over to using an HSM and I can’t seem to crack it. I believe from the post here that such a thing is possible: https://stackoverflow.com/questions/44196316/pdf-signing-generated-pdf-document-certification-is-invalid-using-external-si <https://stackoverflow.com/questions/44196316/pdf-signing-generated-pdf-document-certification-is-invalid-using-external-si>
The signing service provides a signing certificate and ocsp which I need to use to calculate the digest then pass that along to them for signing with the private key. All of the examples in the documentation assume I have the private key. Does anyone here have any example code for calculating and sending pdf digest to external service to sign pdfs? Any help would be greatly appreciated. Thanks, - Michael

