move to 0.4.x versions of arkworks crates #2004
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A-shielded-crypto
Area: Cryptographic design for Penumbra's shielded transaction model
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This was referenced Mar 9, 2023
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This is the `r1cs` branch from our git fork of `ark-sponge`: https://github.com/penumbra-zone/sponge It is unmodified in this commit, changes will be made in the subsequent commits for clarity of the git history. The upstream `ark-sponge` repository is archived because they moved the poseidon implementation to a different repository. In addition, we need to make a lot of changes to get on the upstream impl. This was attempted back in November and at that time we decided to continue using our fork only for the R1CS feature. However, in light of the upcoming migration to Poseidon2, any work resolving the divergence between our fork and the upstream repo would be wasted, as we'll be soon removing Poseidon 1 from `poseidon377`. As such, for stability, we are vendoring our fork of `ark-sponge` on a temporary basis such that we can release `poseidon377` unchanged to crates, then pin all penumbra repositories to that release. Afterwards, we will proceed with migrating to Arkworks 0.4.x release series [0] and migrating to Poseidon2 [1]. [0] penumbra-zone/penumbra#2004 [1] #40
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Apr 26, 2023
This is the `r1cs` branch from our git fork of `ark-sponge`: https://github.com/penumbra-zone/sponge It is unmodified in this commit, changes will be made in the subsequent commits for clarity of the git history. The upstream `ark-sponge` repository is archived because they moved the poseidon implementation to a different repository. In addition, we need to make a lot of changes to get on the upstream impl. This was attempted back in November and at that time we decided to continue using our fork only for the R1CS feature. However, in light of the upcoming migration to Poseidon2, any work resolving the divergence between our fork and the upstream repo would be wasted, as we'll be soon removing Poseidon 1 from `poseidon377`. As such, for stability, we are vendoring our fork of `ark-sponge` on a temporary basis such that we can release `poseidon377` unchanged to crates, then pin all penumbra repositories to that release. Afterwards, we will proceed with migrating to Arkworks 0.4.x release series [0] and migrating to Poseidon2 [1]. [0] penumbra-zone/penumbra#2004 [1] #40
This was referenced Apr 26, 2023
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We should move to use the 0.4.x series of arkworks crates. There are some breaking changes that will need to be propagated through our dependencies. This is the implementation plan:
https://crates.io/crates/poseidon-parameters/0.3.0
https://crates.io/crates/poseidon-paramgen/0.3.0
https://crates.io/crates/poseidon-permutation/0.3.0
https://crates.io/crates/poseidon377/0.4.0
decaf377-rdsaandfrost377#2420decaf377-rdsaandfrost377#2420ark-ffandark-serialize): use 0.4.x series of Arkworks dependencies decaf377-rdsa#16And finally this will let us use a more recent version of ark-groth16.
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