Joseph Choi

PhD Student at the University of Florida (FICS Research, CISE Department). Interests in trusted execution and secure multiparty computation.

[UF Computer & Information Science & Engineering @UFCISE]

Congratulations to Kevin R. B. Butler (@kevinrbbutler), Ph.D., a #UFCISE associate professor, for being selected as a 2020 @UFWertheim Doctoral Dissertation Advisor/Mentoring Awardee. #GatorCSnCE #GoGators

https://t.co/Fkpa200juA

[Joseph Choi @choijosephi]

From research to practice: kudos to @nscaife @peetersc_fics @patrickgtraynor on the launch of Skim Reaper, allowing the detection of skimmers at card terminals.

[Skim Reaper @skim_reaper]

Law enforcement in Punta Gorda (@pgpdfl) is using the #skimreaper to fight back against card skimmers. Learn more:
https://t.co/EjYFsFFfFN

[Joseph Choi @choijosephi]

@Digital_Cold Congratulations, Grant!

[Kevin Butler @kevinrbbutler]

DES was deprecated a long time ago, right? @FairlyParanoid shows that based on making over a billion TLS handshakes across millions of servers, over 40% of TLS servers are still supporting a variant of DES. Great talk at #ASIACCS19. @uf_fics @UFCISE

[Joseph Choi @choijosephi]

1.1 billion handshakes later, my colleague @FairlyParanoid found that over 40.5% of servers worldwide still accept some form of DES during cipher agreement. It's 2019: time to move on! @davejingtian @traynor @kevinrbbutler @UFCISE @uf_fics #asiaccs2019 #asiaccs19

[Joseph Choi @choijosephi]

Thanks to ASIACCS'19 for the opportunity to present our work, "A Hybrid Approach to Secure Function Evaluation Using SGX," here in Auckland, NZ. @davejingtian @Digital_Cold @cjpatton_ @Tom_Shrimpton @kevinrbbutler @patrickgtraynor @UFCISE @uf_fics #asiaccs19 #asiaccs2019

[Patrick Traynor @patrickgtraynor]

Implementing full programs (or even very large functions) via garbled circuits is costly. @choijosephi talks about how natural program partitions can lead to GC/SFE hybrid programs that provide speed (18-30x) AND strong security guarantees. #asiaccs19 @UFCISE @uf_fics

[Kevin Butler @kevinrbbutler]

Can we improve privacy preserving computing by combining the security guarantees of garbled circuits with the speed of secure hardware? @choijosephi shows a new hybrid protocol for efficient computing in a great talk at #asiaccs2019. @uf_fics @UFCISE

[Joseph Choi @choijosephi]

My colleague @Digital_Cold presented some of his exciting work looking at implementation flaws in cellular baseband firmware during the #WiSec19 poster session. @kevinrbbutler @uf_fics @UFCISE

[Joseph Choi @choijosephi]

My colleague @JasmineDBowers crushes her talk on digital credit applications. Policy-to-practice mismatch and faulty configuration put the world's most vulnerable populations, which rely on this technology, further at risk. @SoulfulSherman @kevinrbbutler @patrickgtraynor #WiSec19

[Joseph Choi @choijosephi]

Attending WiSec for the first time! Great opening keynote by @rene_mobile touching on the challenges of improving Android security while accommodating the tail-end of the ecosystem, and several excellent talks already in the first session on Android/mobile security. #WiSec19

[Patrick Traynor @patrickgtraynor]

ACM #WiSec19 begins this morning in Miami Beach. If you care about the security of mobile, wireless, embedded, IoT and all the infrastructure impacted by it, you should be here. Oh yeah, plus it's gorgeous...

[Joseph Choi @choijosephi]

@nscaife @patrickgtraynor Congratulations, Nolen!

[Joseph Choi @choijosephi]

@adwait_nadkarni Thank you very much!

[Joseph Choi @choijosephi]

Honored to receive the Gartner Group Grad Fellowship. #UFCISE

[UF Computer & Information Science & Engineering @UFCISE]

Congratulations to the recipients of the 2019 #UFCISE undergraduate and graduate scholarships. Certificates were presented to the winners at the CISE Awards Ceremony. #GatorCSnCE
https://t.co/zw96ps1pdq

[ACM CODASPY '26 @acmcodaspy]

#codaspy19 outstanding poster award goes to “A Practical Intel SGX Setting for Linux Containers in the Cloud” authored by Dave Tian, Joseph Choi @choijosephi, Grant Hernandez, Patrick Traynor, and Kevin Butler @kevinrbbutler (@UF). Congratulations!

[Kevin Butler @kevinrbbutler]

@choijosephi talks about how to practically build and deploy secure containers using Intel SGX at @acm CODASPY. Thanks to authors @davejingtian, @Digital_Cold, and @patrickgtraynor. #sgx @uf_fics

[Joseph Choi @choijosephi]

Grateful for the opportunity to share our work, "A Practical Intel SGX Setting for Linux Containers in the Cloud," at CODASPY19. @davejingtian @Digital_Cold @kevinrbbutler @patrickgtraynor @uf_fics @acmcodaspy #codaspy19