GovernanceCrypto

Towards Encrypted Mempools from Threshold IBE without Batching

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 18/09/2026, 20:47:04 UTC.

Briefings

This article proposes a design sketch for an Ethereum encrypted mempool using threshold IBE without batching. The system uses FOCIL-like transaction tickets that are included on-chain first, followed by a PTC vote on availability, and finally a consensus round to release decryption keys. This approach ensures that encrypted transactions remain private until confirmed, while binding them to a specific fork via the blockhash. The design acknowledges current limitations in post-quantum threshold schemes and aims to inspire future research by lowering cryptographic requirements.

Key points

• The proposed system uses FOCIL-like transaction tickets included on-chain first, followed by a PTC vote and a final consensus round to release decryption keys.
• The design binds encrypted transactions to a specific fork via the blockhash of the ticket-carrying block, ensuring reorgs invalidate the transaction.

Context and limitations

No suitable threshold IBE scheme currently meets the post-quantum security requirements; the construction remains a design sketch rather than a fully specified protocol.

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