Cryptography has become a matter of general interest. The massive use of digital technologies for communication, combined with the surveillance scandals, have increased concerns about the protection of data and privacy. In this paper, we first present our genealogical methodology. Based on the study of archives, it pays special attention to the cross-influence between technology, discipline, ideology, and historical context. We then apply this methodology on recent history, tracing a lineage going from cypherpunks to Wikileaks. As strange as this may sound, radical transparency and wish for opacity share a common root.