feat(sdk): expose recommended gas limits and helpers for FHE operations (#281) - #327
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feat(sdk): expose recommended gas limits and helpers for FHE operations (#281)#327Lesnak1 wants to merge 1 commit into
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…ns (FhenixProtocol#281) - Expose FHE_GAS_LIMITS constants for COMPUTE (5M), PUBLISH_RESULT (500k), and VERIFY_INPUT (1M) - Add getRecommendedFheGasLimit utility helper to prevent out-of-gas reverts from eth_estimateGas - Add comprehensive unit tests and changeset
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🦋 Changeset detectedLatest commit: f547fce The changes in this PR will be included in the next version bump. This PR includes changesets to release 9 packages
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Summary
Addresses #281 by exposing recommended gas limits and helper utilities for FHE contract operations across
@cofhe/sdk.Context & Motivation
Standard RPC
eth_estimateGas(used by Viem'spublicClient.estimateGas, Wagmi, and Ethers) consistently underestimates execution costs for contract functions invoking CoFHE precompiles (e.g.FHE.asEuint*,FHE.add,FHE.select,FHE.eq). Even with generous buffers (+30%), write transactions often revert out-of-gas unless developers manually specify fixed gas limits.Changes
packages/sdk/core/consts.ts):FHE_GAS_LIMITS.COMPUTE:5_000_000n(for functions executing homomorphic computation)FHE_GAS_LIMITS.PUBLISH_RESULT:500_000n(for verifying threshold decryption signatures viaFHE.publishDecryptResult)FHE_GAS_LIMITS.VERIFY_INPUT:1_000_000n(for ZK input verification / TaskManager)packages/sdk/core/utils.ts):getRecommendedFheGasLimit(operation?: FheGasOperationType): bigintpackages/sdk/core/index.ts):FHE_GAS_LIMITS,FheGasOperationType, andgetRecommendedFheGasLimit.packages/sdk/core/test/gas.test.ts):.changeset/fhe-recommended-gas-limits.mdfor patch release.Verification