mirror of
https://github.com/luxfi/coreth.git
synced 2026-10-30 17:00:51 +00:00
zeekay
1d7cae0355
- Add post-quantum signature verification precompiles: - ML-DSA (FIPS 204) at address 0x0f - SLH-DSA (FIPS 205) at address 0x10 - Falcon at address 0x11 - ML-KEM key encapsulation at address 0x12 - Add api_lux.go with Lux-specific API extensions - Add precompile infrastructure from SubnetEVM: - allowlist module - contract interfaces - precompile config and modules - Update crypto dependency to v1.17.9 (with VerifySignature API) - Remove local replace directives for CI compatibility - Update import paths across 230+ files to use luxfi/crypto
49 lines
1.7 KiB
Go
49 lines
1.7 KiB
Go
// Copyright (C) 2019-2025, Lux Industries, Inc. All rights reserved.
|
|
// See the file LICENSE for licensing terms.
|
|
|
|
package contract
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"regexp"
|
|
|
|
"github.com/luxfi/geth/crypto"
|
|
)
|
|
|
|
// ErrOutOfGas is returned when there is not enough gas to execute an operation
|
|
var ErrOutOfGas = errors.New("out of gas")
|
|
|
|
// Gas costs for stateful precompiles
|
|
const (
|
|
WriteGasCostPerSlot = 20_000
|
|
ReadGasCostPerSlot = 5_000
|
|
|
|
// Per LOG operation.
|
|
LogGas uint64 = 375 // from params/protocol_params.go
|
|
// Gas cost of single topic of the LOG. Should be multiplied by the number of topics.
|
|
LogTopicGas uint64 = 375 // from params/protocol_params.go
|
|
// Per byte cost in a LOG operation's data. Should be multiplied by the byte size of the data.
|
|
LogDataGas uint64 = 8 // from params/protocol_params.go
|
|
)
|
|
|
|
var functionSignatureRegex = regexp.MustCompile(`\w+\((\w*|(\w+,)+\w+)\)`)
|
|
|
|
// CalculateFunctionSelector returns the 4 byte function selector that results from [functionSignature]
|
|
// Ex. the function setBalance(addr address, balance uint256) should be passed in as the string:
|
|
// "setBalance(address,uint256)"
|
|
func CalculateFunctionSelector(functionSignature string) []byte {
|
|
if !functionSignatureRegex.MatchString(functionSignature) {
|
|
panic(fmt.Errorf("invalid function signature: %q", functionSignature))
|
|
}
|
|
hash := crypto.Keccak256([]byte(functionSignature))
|
|
return hash[:4]
|
|
}
|
|
|
|
// DeductGas checks if [suppliedGas] is sufficient against [requiredGas] and deducts [requiredGas] from [suppliedGas].
|
|
func DeductGas(suppliedGas uint64, requiredGas uint64) (uint64, error) {
|
|
if suppliedGas < requiredGas {
|
|
return 0, ErrOutOfGas
|
|
}
|
|
return suppliedGas - requiredGas, nil
|
|
} |