FlexSEE: a Flexible Secure Execution Environment for protecting data-in-use. - Jose Moreira; Jessica H. Tseng; Manoj Kumar 006; Eknath Ekanadham; Joefon Jann; Pratap C. Pattnaik; Gianfranco Bilardi; David Edelsohn; Henry M. Tufo (CF, 2023)