IA technical specification I'm following requires me to send:
The Digital Signature must be in the form of a null content Digitally Signed message (i.e. a PKCS#7 object containing the signature but not the data that was signed).
To my understanding, this means a detached PKCS#7 signature, is that correct?
I couldn't find any definition of what a "Null Content Digitally Signed message" is. So a PKCS#7 detached seems the closest match..