Thank you for dropping your note in here. Can you please let us know the intent of encrypting data?
By default, Adobe cloud servers encrypt all advertising data, which is available as reports or UI data. If you could elaborate a little more on the subject, that'd help us provide a relevant solution to your query.
As a part of GDPR compliance, we were asked to explain what Adobe does to
Are you saying that all data available as reports or UI, is encrypted?
When is it decrypted who does this?
To know what Adobe is doing for GDPR compliance, all information could be found on this page - General data protection regulation, GDPR | Adobe Privacy Center
It holds true for all kinds of data for all Adobe solutions.