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Puzzle 5

23rd November

18:45 UTC

Built by:

Prizes:

Selectivity can cause weaknesses.


View the solution here

Puzzle Preparation

To give you a better chance of solving this puzzle, we suggest that you look through some relevant background materials. For this puzzle we recommend that you look into the Fiat-Shamir Heuristic and the Arkworks material.

See puzzle details on Github

Read more

Click the link for background material on the Fiat-Shamir Heuristic.

Link

Click the link for background material on using Arkworks.

Link

Puzzle Hints

Consider whether the interactive protocol is secure. Was the leap from interactive to non interactive done correctly? Have a look at the paper linked here. It may point you in the right direction.


Puzzle Winners

gold 01

wborgeaud

Puzzle completed

Score

1000

silver 02

AllFi

Puzzle completed

Score

996.4

bronze 03

Kev and Zac

Puzzle completed

Score

996.2

You can view all of the scores for this puzzle in the spreadsheet here

Puzzle Solutions

The winner of the puzzle write up was submitted by grjte, which you can view here. There were many excellent puzzle write ups submitted, you can view them directly here:

* Solution by TrapdoorTech
* Solution by Divide-by-0
* Solution by negativeknowledge
* Solution by Michael-Qedit
* Solution by niooss-ledger