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PoC: onchain rln tree + root #31

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wants to merge 25 commits into from
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PoC: onchain rln tree + root #31

wants to merge 25 commits into from

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rymnc
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@rymnc rymnc commented Nov 29, 2023

Description

This PR includes 2 important changes -

  • Integrate BinaryIMT (edit LazyIMT) into the Rln contract to allow for trustless root computation for lighter verifiers, reference: Onchain RLN + L2 waku-org/research#56
  • Moves the codebase over the the vacp2p/foundry-template, since verification of these contracts is failing due to an etherscan bug between etherscan <> hardhat-deploy. Saw this as an opportunity to port the repo.

Apologies for the large PR, but please note that most of the changes are restricted to Rln.sol, and a new function computeRoot. The tests remain the same, with some additional testing for compatibility with zerokit.

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Thanks! Left some comments.

contracts/PoseidonHasher.sol Outdated Show resolved Hide resolved
test/Rln.t.sol Outdated Show resolved Hide resolved
contracts/RlnBase.sol Outdated Show resolved Hide resolved
contracts/RlnBase.sol Outdated Show resolved Hide resolved
contracts/RlnBase.sol Show resolved Hide resolved
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LCOV of commit ea4a157 during CI #49

Summary coverage rate:
  lines......: 30.4% (41 of 135 lines)
  functions..: 52.0% (13 of 25 functions)
  branches...: 52.5% (21 of 40 branches)

Files changed coverage rate:
                              |Lines       |Functions  |Branches    
  Filename                    |Rate     Num|Rate    Num|Rate     Num
  ==================================================================
  contracts/PoseidonHasher.sol| 100%      1| 100%     1|    -      0
  contracts/RlnBase.sol       | 100%     37| 100%     8| 100%     18

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rymnc commented Nov 30, 2023

@alrevuelta as requested,

{
  "RLN": {
    "polygonZkevmTestnet": "https://testnet-zkevm.polygonscan.com/address/0xC568eF58009b8e5B8824d9fbB271141782545538#",
    "sepolia": "https://sepolia.etherscan.io/address/0xbE24C8d709754523D882D4b67C59e983107cf1E8"
  }
}

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github-actions bot commented Dec 1, 2023

LCOV of commit caa3d3b during CI #51

Summary coverage rate:
  lines......: 29.9% (40 of 134 lines)
  functions..: 50.0% (12 of 24 functions)
  branches...: 52.5% (21 of 40 branches)

Files changed coverage rate:
                           |Lines       |Functions  |Branches    
  Filename                 |Rate     Num|Rate    Num|Rate     Num
  ===============================================================
  contracts/RlnBase.sol    | 100%     37| 100%     8| 100%     18
  test/RLNApp.t.sol        | 100%      2| 100%     2|75.0%      4

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github-actions bot commented Dec 1, 2023

LCOV of commit a3193ce during CI #52

Summary coverage rate:
  lines......: 33.8% (48 of 142 lines)
  functions..: 52.0% (13 of 25 functions)
  branches...: 52.3% (23 of 44 branches)

Files changed coverage rate:
                           |Lines       |Functions  |Branches    
  Filename                 |Rate     Num|Rate    Num|Rate     Num
  ===============================================================
  contracts/RlnBase.sol    | 100%     45| 100%     9|90.9%     22
  test/RLNApp.t.sol        | 100%      2| 100%     2|75.0%      4

test/Rln.t.sol Outdated

function test__root() public {
uint256[] memory idCommitments = new uint256[](10);
idCommitments[0] = 19143711682366759980911001457853255795836264632723844153354310748778748156460;

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no action point here. leaving this for reference, in case we want to generate other testvectors. isn't golang beautiful?

package main

import (
	"math/big"

	log "github.com/sirupsen/logrus"
	"github.com/waku-org/go-zerokit-rln/rln"
)

func main() {

	rlnInstance, err := rln.NewRLN()
	if err != nil {
		log.Fatal(err)
	}

	leafsTestVector := []*big.Int{
		ParseBigInt("19143711682366759980911001457853255795836264632723844153354310748778748156460"),
		ParseBigInt("16984765328852711772291441487727981184905800779020079168989152080434188364678"),
		ParseBigInt("10972315136095845343447418815139813428649316683283020632475608655814722712541"),
		ParseBigInt("2709631781045191277266130708832884002577134582503944059038971337978087532997"),
		ParseBigInt("8255654132980945447086418574686169461187805238257784695584517016324877809505"),
		ParseBigInt("20291701150251695209910387548168084091751201746043024067531503187703236470983"),
		ParseBigInt("11817872986033932471261438074921403500882957864164537515599299873089437746577"),
		ParseBigInt("18475838919635792169148272767721284591038756730004222133003018558598315558783"),
		ParseBigInt("10612118277928165031660389522171737855229037400929675201853245490188277695983"),
		ParseBigInt("17318633845296358766427229711888486415250435256643711009388405482885762601797"),
	}

	for _, leaf := range leafsTestVector {
		rlnInstance.InsertMember(rln.BigIntToBytes32(leaf))
	}

	root, err := rlnInstance.GetMerkleRoot()
	if err != nil {
		log.Fatal(err)
	}

	log.Info("Merkle root:", rln.Bytes32ToBigInt(root))
	// 5210724218081541877101688952118136930297124697603087561558225712176057209122
}

func ParseBigInt(s string) *big.Int {
	x, ok := new(big.Int).SetString(s, 10)
	if !ok {
		log.Fatal("could not parse")
	}
	return x
}

@rymnc rymnc marked this pull request as ready for review December 5, 2023 09:59
@rymnc rymnc requested a review from alrevuelta December 5, 2023 09:59
@rymnc rymnc self-assigned this Dec 5, 2023
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Massive work!
This is still in draft, but I left some comments anyways

.gas-snapshot Outdated
@@ -0,0 +1 @@
FooTest:test_Example() (gas: 8662)
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Probably want to have this regenerated based on the tests of this repository.
Just need to run forge snapshot

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okay

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addressed in f22afdf


# Rename instances of "vacp2p/foundry-template" to the new repo name in README.md for badges only
sedi "/gha/ s|vacp2p/foundry-template|"${GITHUB_REPOSITORY}"|;" "README.md"
sedi "/gha-badge/ s|vacp2p/foundry-template|"${GITHUB_REPOSITORY}"|;" "README.md"
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This entire file is not needed and is only triggered when forking/creating a repo from our template repo.
So you can remove this.

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Addressed in 9f3b5df

- name: "Add commit summary"
run: |
echo "## Commit result" >> $GITHUB_STEP_SUMMARY
echo "✅ Passed" >> $GITHUB_STEP_SUMMARY
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This file is also only needed for forking/creating from the GH template.
No need to keep this here.

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Addressed in 9f3b5df

LICENSE.md Outdated
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Not sure if this needs to be changed. Probably fine to just keep it

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Addressed in 9f3b5df, we have the licenses as LICENSE-MIT and LICENSE-APACHE

[foundry]: https://getfoundry.sh/
[foundry-badge]: https://img.shields.io/badge/Built%20with-Foundry-FFDB1C.svg
[license]: https://opensource.org/licenses/MIT
[license-badge]: https://img.shields.io/badge/License-MIT-blue.svg
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We also have a badge for coverage. If you want to have this added, let me know

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not at the moment!

foundry.toml Outdated
bytecode_hash = "none"
cbor_metadata = false
evm_version = "shanghai"
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Unless you're sure that these contracts aren't going to be deployed on chains that don't support for example PUSH0, I'd use "paris" for now.

For more info, see https://www.evmdiff.com/diff?base=1&target=10

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Addressed in 700d99b

"version": "1.0.0",
"author": {
"name": "0x-r4bbit",
"url": "https://github.com/vacp2p"
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This part probably needs change (name, description, author)

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Addressed in a647a84


function getOrCreatePolygonZkevmConfig() public view returns (NetworkConfig memory) {
return NetworkConfig({ deployer: deployer });
}
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Unless there's a plan to actually provide different configurations pre network, we can probably remove these and simplify the constructor. But I'm also fine if we keep it for explicitness

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Leaving it in for explicitness if we want to change it!

fi


forge script script/Deploy.s.sol:Deploy --chain $chain_name --rpc-url $rpc_url --private-key "$PRIVATE_KEY" --broadcast -v
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FYI: Since we're using Deploy.s.sol here, which is BaseScript, we can probably better use the MNEMONIC environment variable over --private-key.

Otherwise, I believe there's also an interactive mode in forge script using -i which lets you enter the private key. Not sure if this is any better though.

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err, i dont use a mnemonic to deploy, and if anyone needs to, they can always go back to deriving a private key for it, not the other way around. seems fine to me for now

@alrevuelta alrevuelta changed the title computeRoot view function PoC: onchain rln tree + root Dec 5, 2023
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No more input on my side by now. This was enough for a Proof of Concept (see waku-org/research#72) and until we decide if we want to integrate it or not in The Waku Network, we can consider it done.

If at some point we decide to move forward, we will have to do proper/deep reviews.

By now I would leave the PR open for reference, with no intention to merge by now.

Thanks!

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Can we close this since the LazyIMT was integrated successfully here?
https://github.com/waku-org/waku-rlnv2-contract

@rymnc rymnc closed this May 31, 2024
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3 participants