A/Prof of Crypto and Crypto, University of Sydney @Sydney_Uni,
Sydney, Australia
Joined June 2021
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paper link at eprint.iacr.org/2026/2645 , to make the nice notion great again :)
Front-running attacks are a poison for large-scale adoption of blockchains: afterall who wants others to profit from them. The issue lies in that scientific solutions, like Pompei @usenix OSDI'20, have to choose between ensuring liveness or ordering transactions. Spolier alert: this problem is now solved!
Honored to be invited to the reception dinner hosted by Ambassador Brat, and great to hear the importance (still! :)) of innovations and collaborations~
It's official: Ambassador Brat presented his credentials to Governor-General, Her Excellency Sam Mostyn AC in a ceremony on Tuesday, before getting straight to work advancing President Trump's priorities, which include deepening the U.S.-Australia Alliance.
His first official visit was to the Australian War Memorial (AWM), where he and his wife Laura laid a wreath. AWM Director Matt Anderson gave profoundly moving testimony about the sacrifice made by Australian service members. For more than a century, our nations have stood together in times of conflict and peace.
In the evening, Ambassador Brat hosted a reception for the finalists of the 2026 AmCham Alliance Awards, recognizing the emerging industry leaders and innovators helping to strengthen our alliance.
“Our two nations are investing in each other more than ever before, and our economic ties have never been stronger,” Ambassador Brat said.
ALT Photo: Andrew Taylor/Department of Foreign Affairs and Trade
Happy to be supported by this fellowship to advance distributed protocols/infrastructure to make our Internet and digital economy better. Thanks to all my mentors and mentees :)
The ARC’s 2026 Future Fellowships scheme will provide more than $344 million in Aus Govt funding to support researchers addressing major national challenges and opportunities.
Learn more: arc.gov.au/future-fellowship…
we'll release it online soon, stay tuned.. :)
Just a teaser, a new solution to front-running, back-running and sandwich attacks has just been accepted for publication at @NDSSSymposium. It is called IsoTaxi, and it has optimal resilience and communication complexity!
Qiang Tang retweeted
The submission server for Eurocrypt 2027 is now open.
Deadline for submissions is Sep 17, 2026 at 23:59 AoE.
eurocrypt.iacr.org/2027/pape…
#eurocrypt2027
#eurocrypt27
#ec27
#iacr
Qiang Tang retweeted
Advances in Financial Technologies AFT 2026 - Accepted papers, conference program and attendance information now public! Looking forward to a great conference this October in London! aft.ifca.ai/aft26/index.html with @AndrewLewisPye, Maria Kyropoulou.
CRYPTO26 is happening now, we have two interesting results to share: 1. morphic accumulators that resolves the tension between "security" and "structure"; 2. ~optimal hash based ACS/MVBA, to repeat the success of recent async consensus using hash only.
link for optimal hash mvba, eprint.iacr.org/2024/1710; Hanwen's video: youtube.com/watch?v=8eNDB3oH…
link for morphic accumulator, eprint.iacr.org/2026/1202; and Jiajun's video: youtube.com/watch?v=Oo13W-ad…
Qiang Tang retweeted
This is how tenure ends.
blog.computationalcomplexity…
great to be part of MathQuEST led by @monsoon0 , and will work harder to lead the security theme to make real progress in next few years ~~
Australia's research capability is set for a major boost, with 8 new ARC Centres of Excellence receiving $279M.
From quantum computing and ocean health to renewable fuels and social inclusion, these Centres will unite leading researchers to tackle critical challenges: arc.gov.au/news-publications…
ALT Light blue graphic with a stylised ribbon and medal icon in the centre, surrounded by small decorative sparkles and lines. Below, a dark blue banner reads “ARC Grants”, with the text “ARC Centres of Excellence announcement” underneath.
With @motiyung @YaNanLI_t , we wrote about why and how we have end to end security for git service and more now, results will be presented at @acm_ccs next week.
End-to-end encryption is the gold standard to protect data – and now it can be used beyond messaging platforms such as Signal. @QiangTang7 @Sydney_Uni theconversation.com/the-worl…
who wants to chat with friends while there is always a camera peeking? accountability does not have to fully compromise end to end security ...
csa-scientist-open-letter.or…
online collaboration is always like bathing in a glass room.. now finally with a frosted glass... also the "digital supply-chain security" is as important ~ with @YaNanLI_t @motiyung, and yaqing. Many many interesting questions remain, both theory and practice.
[New] End-to-End Encrypted Git Services (Ya-Nan Li and Yaqing Song and Qiang Tang and Moti Yung) ia.cr/2025/1208
After two fierce rejs, our first hash based MVBA with optimal complexities seems to be liked :) eprint.iacr.org/2024/479 when there is no heavy hammers, things get tricky; hope our other even stronger result eprint.iacr.org/2024/1710 ends up with a less bumpy life ...
Qiang Tang retweeted
Hans will present our work on "Constant latency and finality for dynamically available DAG" tomorrow at #IEEESP25! Check it out here: eprint.iacr.org/2025/067.pdf
Qiang Tang retweeted
1. Who was one of the first proposers of ransomware:
A. Bruce Schneier
B. Ron Rivest
C. Moti Yung
D. Adi Shamir
Answer: C
YouTube: youtube.com/watch?v=GRY178v1…
Spotify: open.spotify.com/episode/0zs…
Apple: podcasts.apple.com/gb/podcas…
Qiang Tang retweeted
🎓Qiang Tang @QiangTang7, Associate Professor of University of Sydney, is giving a speech on "Towards Deployable Large Scale Distributed Key Generation and All-hands Checkpointing" at #WSC2025.
🗓️Apr 8, 2025 | 09:30-17:30
📍STAGE 2, HK WEB3 FESTIVAL
🔗Livestream: youtube.com/live/Qq2mu_C-Y9w
#WSC2025 #Web3Festival #HK
Qiang Tang retweeted
So happy to speak with @sol3gga today on his past work, his current work and the future ... youtube.com/watch?v=_zjROu-N…
