feat: EIP-7702 Set Code Transaction support #42
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Add support for EIP-7702 (SetCodeTx) which allows EOAs to temporarily delegate their code execution to another account. Changes include: - Add SetCodeTx (type 0x04) transaction type and Authorization struct - Add anzeonSigner for EIP-7702 transaction signing - Implement delegation designator resolution in EVM - Add EIP-7702 specific gas calculation for CALL variants - Update EXTCODE* opcodes to handle delegation designators - Add prestate tracer support for authorization list - Update t8n tool and tests for SetCodeTx Based on ethereum/go-ethereum#30078
- Rename Authorization to SetCodeAuthorization - Rename SignAuth to SignSetCode with key-first parameter order Based on ethereum/go-ethereum#30933
The API spec requires the name yParity. Based on: - ethereum/go-ethereum@73a4ecf - ethereum/go-ethereum#30936
Use SetCode prefix consistently in internal APIs for the authorization list, as a follow-up to SetCodeAuthorization type renaming. Based on ethereum/go-ethereum#30935
Change ChainID field type from uint64 to uint256.Int in SetCodeTx and SetCodeAuthorization for consistency with other chain ID handling. Also removes unused json/gencodec tags from signature value fields in DynamicFeeTx, BlobTx, SetCodeTx, and FeeDelegateDynamicFeeTx. Based on ethereum/go-ethereum#30982
Use zero value check for SetCodeTx chainId validation. This aligns with cancunSigner and londonSigner as well. Based on ethereum/go-ethereum#31032
ChainID should be properly initialized and copied in the copy() method to prevent nil pointer issues during transaction processing. Based on ethereum/go-ethereum#31054
EXTCODE* opcodes no longer need special overrides for EIP-7702 delegation designators. The delegation designator is now returned as-is. Implements EIPs#9248. Based on ethereum/go-ethereum#31089
Add SetCode transaction handling to legacypool: - SetCodeTxType validation with Anzeon fork check - Empty authorization rejection - Authority tracking and conflict prevention - Account slot limit for delegated accounts and pending authorizations Note: tx replacement is not supported in go-stablenet. Tests are adjusted to expect ErrAccountLimitExceeded instead of successful replacement. Based on ethereum/go-ethereum#31073
Move authorization-related validations from common validation to legacyPool since these checks are specific to SetCode transactions. Based on ethereum/go-ethereum#31209
Fix removeAuthorities to only iterate tx's authorities instead of all authorities in the pool. Based on ethereum/go-ethereum#31249
Add sigHash method to TxData interface and move hash computation into each tx type, reducing allocations during signature operations. Based on ethereum/go-ethereum#31258
Add checkDelegationLimit to reject transactions with gapped nonces from delegated accounts. Only one in-flight executable transaction is allowed for senders with delegation or pending delegation. Based on ethereum/go-ethereum#31430
Exclude valid EIP-7702 authorities from access list generation result. Based on ethereum/go-ethereum#31336 (which resolves ethereum/go-ethereum#31335)
Add delegationTxsCount method with proper lock to fix data race when accessing auths map in checkDelegationLimit. Based on ethereum/go-ethereum#31475
Add delegation limit checks to blobpool: - Limit senders with delegation/pending auth to one in-flight tx - Check reserver for authority conflicts - Refactor AddressReserver to Reserver struct with Hold/Release/Has Based on ethereum/go-ethereum#31526
- Skip slot limit validation for tx replacements (same nonce reuses slot) - Clarify cumulative balance validation skip reason: fee delegation compatibility
Check reserver for authority conflicts to make authorization validation independent of admission order. Authorities must not conflict with addresses reserved by other subpools. Based on ethereum/go-ethereum#31373
Reset txlookup fields directly with proper locking instead of assigning a new lookup object to avoid data race. Based on ethereum/go-ethereum#31641
Add AuthorizationList field to CallMsg and toCallArg to support SetCodeTx in eth_call and eth_estimateGas APIs. Based on ethereum/go-ethereum#31198
Use Reheap() instead of assigning a new pricedList to avoid data race when clearing pool state. Based on ethereum/go-ethereum#31758
Before: Authority accounts' prestate showed post-authorization code/storage
and incorrect balance/nonce due to wrong capture timing
After: Authority accounts' prestate correctly reflects state before
SetCodeAuthorization is applied
- Refactor EVMLogger to pass env in CaptureTxStart instead of CaptureStart
- Capture authority accounts before delegation code (0xef0100...) is set
- Preserve original code/storage while restoring only gas from balance
Parse and lookup the delegation account if EIP-7702 is enabled in prestate tracer. Implements ethereum/go-ethereum#32078 Based on ethereum/go-ethereum#32080
Rename the private sigHash() method to public SigHash() method to enable external signing (e.g., MPC signing). Based on ethereum/go-ethereum#32298 (which resolves ethereum/go-ethereum#32297)
- Add tracer lifecycle calls in runtime package - Fix EIP-7702 and blobpool test configs
This reverts commit 71e90d7.
0xmhha
reviewed
Jan 8, 2026
Contributor
|
In SetCodeTx, when resolving delegated authorization, if either the delegating EOA or the delegatee contract address is blacklisted, should the authorization be denied (i.e., treated as “not authorized”)? |
Contributor
Author
I think it's fine without additional checks:
|
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Summary
Implement EIP-7702 (Set Code Transaction) support for go-stablenet.
This enables account abstraction by allowing EOAs to delegate their code
execution to smart contracts through SetCode authorizations.
EIP-7702 Implementation
Transaction Type
SetCodeTx(type 0x04) withSetCodeAuthorizationsupportauthorizationListin RPC calls (eth_call,eth_estimateGas,eth_createAccessList)Execution
0xef0100in EVM executionTransaction Pool
Tracing
Changes based on go-ethereum (24 commits)
9843306cceedb0254d78e83bae33240e331db32978f45c2eaae0e0685ad48b37437c4d3ec89e0f90eb2334d452a95916fa726a945a13f8af462a019aa46827930a1c0c8eebfcb9bba28c9c28db2e0ae5a3b6132328d4c03afd37568b681eced80b8a4f6a74abcda01c9f38d2