EIP-XXXX: AuthCreate

core/tracing/hooks.go

@@ -268,6 +268,8 @@ const (
 	GasChangeCallStorageColdAccess GasChangeReason = 13
 	// GasChangeCallFailedExecution is the burning of the remaining gas when the execution failed without a revert.
 	GasChangeCallFailedExecution GasChangeReason = 14
+	// GasChangeContractCreation is the amount of gas that will be burned for a AUTH_CREATE.
+	GasChangeCallAuthCreation GasChangeReason = 15
 
 	// GasChangeIgnored is a special value that can be used to indicate that the gas change should be ignored as
 	// it will be "manually" tracked by a direct emit of the gas change event.

core/vm/eips.go

@@ -319,3 +319,14 @@ func enable6780(jt *JumpTable) {
 		maxStack:    maxStack(1, 0),
 	}
 }
+
+func enableXXXX(jt *JumpTable) {
+	jt[AUTH_CREATE] = &operation{
+		execute:     opAuthCreate,
+		constantGas: params.AuthCreateGas,
+		dynamicGas:  gasAuthCreate,
+		minStack:    minStack(3, 1),
+		maxStack:    maxStack(3, 1),
+		memorySize:  memoryAuthCreate,
+	}
+}

core/vm/errors.go

@@ -38,6 +38,7 @@ var (
 	ErrGasUintOverflow          = errors.New("gas uint64 overflow")
 	ErrInvalidCode              = errors.New("invalid code: must not begin with 0xef")
 	ErrNonceUintOverflow        = errors.New("nonce uint64 overflow")
+	ErrAuthCreateSigType        = errors.New("auth_create signature type not found ")
 
 	// errStopToken is an internal token indicating interpreter loop termination,
 	// never returned to outside callers.

core/vm/evm.go

@@ -523,6 +523,36 @@ func (evm *EVM) Create2(caller ContractRef, code []byte, gas uint64, endowment *
 	return evm.create(caller, codeAndHash, gas, endowment, contractAddr, CREATE2)
 }
 
+func (evm *EVM) AuthCreate(caller ContractRef, data []byte, gas uint64, endowment *uint256.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) {
+	if data[0] >= 4 {
+		return nil, common.Address{}, 0, ErrAuthCreateSigType
+	}
+
+	code := make([]byte, len(data)-65)
+	copy(code[:], data[65:])
+	codeAndHash := &codeAndHash{code: code}
+
+	sig := make([]byte, 65)
+	copy(sig, data)
+
+	msg := []byte{params.AuthCreateMagic}
+	msg = append(msg, common.LeftPadBytes(evm.chainConfig.ChainID.Bytes(), 32)...)
+	msg = append(msg, codeAndHash.Hash().Bytes()...)
+	msg = crypto.Keccak256(msg)
+
+	sig = append(sig[1:], sig[0])
+	pub, err := crypto.Ecrecover(msg, sig)
+	if err != nil {
+		return nil, common.Address{}, 0, err
+	}
+
+	var eoaAddr common.Address
+	copy(eoaAddr[:], crypto.Keccak256(pub[1:])[12:])
+
+	evm.StateDB.SetNonce(eoaAddr, 0)
+	return evm.create(caller, codeAndHash, gas, endowment, eoaAddr, AUTH_CREATE)
+}
+
 // ChainConfig returns the environment's chain configuration
 func (evm *EVM) ChainConfig() *params.ChainConfig { return evm.chainConfig }
 

core/vm/gas_table.go

@@ -484,3 +484,20 @@ func gasSelfdestruct(evm *EVM, contract *Contract, stack *Stack, mem *Memory, me
 	}
 	return gas, nil
 }
+
+func gasAuthCreate(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	gas, err := memoryGasCost(mem, memorySize)
+	if err != nil {
+		return 0, err
+	}
+	size, overflow := stack.Back(2).Uint64WithOverflow()
+	if overflow || size > params.MaxInitCodeSize {
+		return 0, ErrGasUintOverflow
+	}
+	// Since size <= params.MaxInitCodeSize, these multiplication cannot overflow
+	moreGas := (params.InitCodeWordGas + params.Keccak256WordGas) * ((size + 31) / 32)
+	if gas, overflow = math.SafeAdd(gas, moreGas); overflow {
+		return 0, ErrGasUintOverflow
+	}
+	return gas, nil
+}

core/vm/instructions.go

@@ -652,6 +652,40 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]
 	return nil, nil
 }
 
+func opAuthCreate(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	if interpreter.readOnly {
+		return nil, ErrWriteProtection
+	}
+	var (
+		endowment    = scope.Stack.pop()
+		offset, size = scope.Stack.pop(), scope.Stack.pop()
+		data = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
+		gas          = scope.Contract.Gas
+	)
+	// Apply EIP150
+	gas -= gas / 64
+	scope.Contract.UseGas(gas, interpreter.evm.Config.Tracer, tracing.GasChangeCallAuthCreation)
+	// reuse size int for stackvalue
+	stackvalue := size
+	res, addr, returnGas, suberr := interpreter.evm.AuthCreate(scope.Contract, data, gas, &endowment)
+	// Push item on the stack based on the returned error.
+	if suberr != nil {
+		stackvalue.Clear()
+	} else {
+		stackvalue.SetBytes(addr.Bytes())
+	}
+	scope.Stack.push(&stackvalue)
+
+	scope.Contract.RefundGas(returnGas, interpreter.evm.Config.Tracer, tracing.GasChangeCallLeftOverRefunded)
+
+	if suberr == ErrExecutionReverted {
+		interpreter.returnData = res // set REVERT data to return data buffer
+		return res, nil
+	}
+	interpreter.returnData = nil // clear dirty return data buffer
+	return nil, nil
+}
+
 func opCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	stack := scope.Stack
 	// Pop gas. The actual gas in interpreter.evm.callGasTemp.

core/vm/interpreter.go

@@ -99,6 +99,8 @@ func NewEVMInterpreter(evm *EVM) *EVMInterpreter {
 	// If jump table was not initialised we set the default one.
 	var table *JumpTable
 	switch {
+	case evm.chainRules.IsPrague:
+		table = &pragueInstructionSet
 	case evm.chainRules.IsCancun:
 		table = &cancunInstructionSet
 	case evm.chainRules.IsShanghai:

core/vm/jump_table.go

@@ -57,6 +57,7 @@ var (
 	mergeInstructionSet            = newMergeInstructionSet()
 	shanghaiInstructionSet         = newShanghaiInstructionSet()
 	cancunInstructionSet           = newCancunInstructionSet()
+	pragueInstructionSet           = newPraugeInstructionSet()
 )
 
 // JumpTable contains the EVM opcodes supported at a given fork.
@@ -80,6 +81,12 @@ func validate(jt JumpTable) JumpTable {
 	return jt
 }
 
+func newPraugeInstructionSet() JumpTable {
+	instructionSet := newCancunInstructionSet()
+	enableXXXX(&instructionSet) // EIP-XXXX AuthCreate
+	return validate(instructionSet)
+}
+
 func newCancunInstructionSet() JumpTable {
 	instructionSet := newShanghaiInstructionSet()
 	enable4844(&instructionSet) // EIP-4844 (BLOBHASH opcode)

core/vm/memory_table.go

@@ -64,6 +64,10 @@ func memoryCreate2(stack *Stack) (uint64, bool) {
 	return calcMemSize64(stack.Back(1), stack.Back(2))
 }
 
+func memoryAuthCreate(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(1), stack.Back(2))
+}
+
 func memoryCall(stack *Stack) (uint64, bool) {
 	x, overflow := calcMemSize64(stack.Back(5), stack.Back(6))
 	if overflow {

core/vm/opcodes.go

@@ -217,6 +217,7 @@ const (
 	RETURN       OpCode = 0xf3
 	DELEGATECALL OpCode = 0xf4
 	CREATE2      OpCode = 0xf5
+	AUTH_CREATE  OpCode = 0xf6
 
 	STATICCALL   OpCode = 0xfa
 	REVERT       OpCode = 0xfd
@@ -391,6 +392,7 @@ var opCodeToString = [256]string{
 	CALLCODE:     "CALLCODE",
 	DELEGATECALL: "DELEGATECALL",
 	CREATE2:      "CREATE2",
+	AUTH_CREATE:  "AUTH_CREATE",
 	STATICCALL:   "STATICCALL",
 	REVERT:       "REVERT",
 	INVALID:      "INVALID",
@@ -548,6 +550,7 @@ var stringToOp = map[string]OpCode{
 	"LOG4":           LOG4,
 	"CREATE":         CREATE,
 	"CREATE2":        CREATE2,
+	"AUTH_CREATE":    AUTH_CREATE,
 	"CALL":           CALL,
 	"RETURN":         RETURN,
 	"CALLCODE":       CALLCODE,

params/config.go

@@ -184,6 +184,7 @@ var (
 		GrayGlacierBlock:              big.NewInt(0),
 		ShanghaiTime:                  newUint64(0),
 		CancunTime:                    newUint64(0),
+		PragueTime:                    newUint64(0),
 		TerminalTotalDifficulty:       big.NewInt(0),
 		TerminalTotalDifficultyPassed: true,
 	}

params/protocol_params.go

@@ -86,6 +86,7 @@ const (
 	LogTopicGas           uint64 = 375   // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.
 	CreateGas             uint64 = 32000 // Once per CREATE operation & contract-creation transaction.
 	Create2Gas            uint64 = 32000 // Once per CREATE2 operation
+	AuthCreateGas         uint64 = 32000 // Once per CREATE2 operation
 	SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation.
 	MemoryGas             uint64 = 3     // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL.
 
@@ -188,4 +189,5 @@ var (
 	BeaconRootsAddress = common.HexToAddress("0x000F3df6D732807Ef1319fB7B8bB8522d0Beac02")
 	// SystemAddress is where the system-transaction is sent from as per EIP-4788
 	SystemAddress   = common.HexToAddress("0xfffffffffffffffffffffffffffffffffffffffe")
+	AuthCreateMagic = byte(0x04)
 )