~/talk

Enter the Hydra: Towards Principled Bug Bounties and Exploit-Resistant Smart Contracts

Talkat USENIX Security '18 · on Friday, 2018-08-17· at 13:55· Grand Ballroom 1-4· [security, cryptography]
slides:none on file

Hydra transforms contracts into N-of-N replicated versions and replaces majority voting with a consensus fault manager that aborts on disagreement, creating an exploit gap (NASA-derived gaps ~4,409 for 3 heads, ~34,000 for 4) so attackers expect expected payout A/gap and prefer small bounties. Implementation includes an EVM-to-EVM transpiler, a meta contract proxying external effects, deployed ERC20 and Monty-Hall contracts, EVM test-suite and live-data validation, a live $1,000 bounty, and a front-running countermeasure called Submarine Commitments.

AI-written summary · about

  1. 0:00The smart contract problem
  2. 2:05N-version programming model
  3. 6:17The Hydra framework
  4. 8:03Secure bug bounty incentives
  5. 13:03Hydra implementation
  6. 16:04Security analysis and conclusion
  7. 19:43Q&A session
~/search
type to search 6,249 conferences, 138,987 speakers and 185,172 talks
~/help
cmdctrl k
search every conference, speaker and series
/
focus the filter search
h
home
c
conferences
s
speakers
e
series
t
light / dark — the status bar button does the same
?
this help
esc
close this, then clear every filter — or just the search, while you are typing in it

Ignored while you are typing. Pages without a filter rail have no search to focus.