10th December
19:00 UTC
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It’s a wonderful era of ZK where we can use it for flexible and safe authentication mechanisms. Or can we? This puzzle was inspired by the zkEmail and Aptos Keyless circuit codebases.
View the solution
Puzzle Preparation
To give you a better chance of solving this puzzle, we suggest that you look through some relevant background materials.
Click the link to open and go through Noir Quick Start documentation.
LinkSee puzzle details on Github
Puzzle linkPuzzle Hints
Hint #1
Look deeply at the return value of the “storage” method.
Hint #2
What happens if you witness a wrong length?
Hint #3
Look into the array that corresponds to the value “identifier” and make sure which values are actually hashed.
Puzzle Winners
01
Zellic
Puzzle completed
Score
1,000
02
baby step forward, giant step backward
Puzzle completed
Score
999.9
03
Rumata888
Puzzle completed
Score
999.1
You can see all of the scores for this puzzle in the spreadsheet here.
Puzzle Solutions and Write-ups
The winner of the puzzle write-up was submitted by 0x6980. You can view the solution and
puzzle write-up
here.
The background material required to solve the puzzle is also covered in the write up.
There were many interesting write-up submissions which are linked below:
* Winning write-up by 0x6980
* Write-up by reymom
* Write-up by lopeetall
* Write-up by
Lucian-code233
* Write-up by eightfilms
* Write-up by huy-tn
* Write-up by
niooss-ledger
* Write-up by
pmikolajczyk41
* Write-up by r0wdy1