What is the difference between OPC and GSDX format?

[Webinar_Question]

"I don't know much about OPC (Open Package Convention). What is the difference between OPC and GSDX? (Does "GSDX is based on OPC" mean that GSDX has any extensions that OPC does not have?) For example, does GSDX use a different "container security" and/or "container management" than OPC?"

[Alex.W]

"I don't know much about OPC (Open Package Convention). What is the difference between OPC and GSDX? (Does "GSDX is based on OPC" mean that GSDX has any extensions that OPC does not have?) For example, does GSDX use a different "container security" and/or "container management" than OPC?"

Yes, GSDX uses OPC, but requires XAdES XML signatures. OPC provides support for XML signatures. Any tool that supports OPC should also support GSDX, but may not support the XAdES extensions.