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1. Purpose or design rationale of this PR
This PR implements RIP-7212 (aka EIP-7212).
It follows the reference implementation of the author @ulerdogan ethereum#27540 and the more up-to-date version ulerdogan#1.
As discussed here ethereum-optimism/op-geth#168 (comment), there are additional tests added from https://github.com/google/wycheproof.
2. PR title
Your PR title must follow conventional commits (as we are doing squash merge for each PR), so it must start with one of the following types:
3. Deployment tag versioning
Has the version in
params/version.go
been updated?4. Breaking change label
Does this PR have the
breaking-change
label?