Jon Callas

Jon Callas is a cryptographer, software engineer, and entrepreneur. He is the co-author of many crypto and security systems including OpenPGP, DKIM, ZRTP, Skein, and Threefish. He has co-founded several startups including PGP and Silent Circle, and has worked on security and crypto for Apple, Tesla, Kroll-O’Gara, Counterpane, and Entrust.