[CORE] Implement Zero-Allocation Precompile Multi-Call Processor in Yul

[mijinummi]

Labels: high-difficulty, yul, cryptography, gasguard
Difficulty: High
Module: contracts/crypto/

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🧠 Concept

Build an assembly batch engine that executes multiple signature verification operations (ecrecover) or modular exponentiations (modexp) sequentially within a single Yul execution loop.

⚠️ Problem

Executing multiple cryptographic checks sequentially using high-level Solidity wrappers repeatedly allocates and frees memory, accumulating significant memory expansion gas.

📁 Implementation Scope

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

🛠️ Requirements

1. Maintain fixed-size input/output buffers in memory without invoking free memory updates.
2. Call EVM precompiles (0x01 or 0x05) repeatedly within a Yul loop using staticcall.
3. Aggregate results and return execution status flags atomically.

🎯 Acceptance Criteria

• Batch cryptographic verification gas scales linearly without memory expansion penalties.
• Accurately identifies failed validations in batch payloads.

[quickweb-stack]

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

I've reviewed the task and have a clear implementation plan. Looking forward to contributing with a quality PR.

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

[amberly-d]

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

can i solve this?

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

[drips-wave]

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

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