Loading…
This event has ended. View the official site or create your own event → Check it out
This event has ended. Create your own
View analytic
Wednesday, August 5 • 12:00 - 12:25
Backdooring MS Office documents with secret master keys

Sign up or log in to save this to your schedule and see who's attending!

Recent MS Office documents are normally encrypted very strongly, making them difficult to brute force. However, there are techniques an attacker can use to secretly backdoor these encrypted documents to make them trivial to decrypt. Cloud environments may be more dangerous than thought as it is not possible for users to confirm the security of their encryption and it would be easy for cloud providers (or advanced attackers with access to those cloud providers) to backdoor encryption in undetectable ways. I believe that this is a serious problem that the security industry needs to consider.

Speakers
SM

Shigeo Mitsunari

Shigeo Mitsunari is a software developer and researcher. He is interested in cryptography, in particular, pairing-based cryptography and its implementation. He developes a x86/x64 JIT assembler Xbyak and very fast C++ pairing library which are open source projects. He was received MITOH Super Creator by IPA in 2003, the Chairman Awards by Information Promotion consortium in 2005, the Best paper award by IEICE in 2010.
avatar for Yoshinori Takesako

Yoshinori Takesako

chairperson, SECCON
Yoshinori Takesako is the executive committee chairperson, organizer, and challenge creator of the SECCON CTF contests that are held several times a year throughout Japan including large international online and in-person contests. He is also on the OWASP Japan advisory board, the review board for the CODE BLUE conference, a Microsoft MVP of Developer Security, the leader of the Shibuya Perl Mongers group, and has been designated an expert in... Read More →


Wednesday August 5, 2015 12:00 - 12:25
Common Ground Florentine G