[PERF] Build Gas-Optimized EIP-712 Typed Data Hash Calculator

[mijinummi]

Labels: medium-difficulty, yul, cryptography, gasguard
Difficulty: Medium
Module: contracts/crypto/

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🧠 Concept

Build a Yul-based EIP-712 domain separator and struct hash evaluator that computes typed message digests with minimal memory allocations.

⚠️ Problem

Standard EIP-712 implementations execute multiple abi.encode steps, generating redundant memory allocations for every field in the typed struct.

📁 Implementation Scope

• contracts/crypto/YulEIP712.sol
• test/crypto/YulEIP712.test.ts

🛠️ Requirements

1. Cache pre-computed TYPEHASH constants in immutable bytecode storage.
2. Construct EIP-712 struct payload in scratch space and execute single-pass hashing.
3. Compute final _hashTypedDataV4 digest via inline Yul.

🎯 Acceptance Criteria

• Outperforms standard EIP-712 implementations in gas benchmarks.
• Verifies typed signatures accurately against standard test vectors.

[fahatadam]

@fahatadam has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Good day Bro, can you assign me this.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @fahatadam to this issue.

[suleimanjem-hash]

@suleimanjem-hash has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello Maintainer

Can I take on thos

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[drips-wave]

Congratulations, @suleimanjem-hash! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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[drips-wave]

This issue has been completed by @suleimanjem-hash as part of the Stellar Wave Program's 7th Wave 🥳

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