XML Signature | Java or PL/SQL

Summary: Implement XML Signature in Java or PL SQL for SWIFT LAU. Doesn't need to be developed from scratch, Sample code has already been developed by a coder in below blog .. but it has some issues while verifying the digest and signature for an XML which needs to be sorted. End result should be a signed XML that could be verified for both digest and signature. [login to view URL] Attached is the developer guide that has example (refer section 3.2, 3.3, 3.4.1, 3.4.2) Details: We have Oracle ERP as backend system and are preparing the XML in java + pl SQL. The end goal of this project is to prepare an enveloped XML signature that is SWIFT LAU Fileact compatible. I was able to write the code for XML signature but the message digest and signature value fails while validating in SWIFT with error saying incorrect digest and signature. I have shared the link to the blog ([login to view URL]) that was referred. I tried comparing the XML Signature generated by my code over free online tools like ([login to view URL], [login to view URL]) to validate the XML signature or message digest, but it is not validating either. Only special thing about the XML signature is we are not using public private key pair .. but rather a secret key which is with both source and destination. Again, you could see sample code in the blog. So, I need someone who has worked on XML Signature in past and understand the issue as the "goal is not to build the code but rather to fix the issue", and make sure the generated XML computed digest is getting validated on any online tool, and is compatible with SWIFT as well. This could simply take couple of hours to troubleshoot or more depending on experience.