plugeth/vm/address.go
Felix Lange 69baa465ea Merge eth-go repository into go-ethereum
mist, etheruem have been moved to cmd/
2014-10-23 15:01:27 +02:00

43 lines
882 B
Go

package vm
import (
"math/big"
"github.com/ethereum/go-ethereum/ethcrypto"
"github.com/ethereum/go-ethereum/ethutil"
)
type Address interface {
Call(in []byte) []byte
}
type PrecompiledAddress struct {
Gas *big.Int
fn func(in []byte) []byte
}
func (self PrecompiledAddress) Call(in []byte) []byte {
return self.fn(in)
}
var Precompiled = map[uint64]*PrecompiledAddress{
1: &PrecompiledAddress{big.NewInt(500), ecrecoverFunc},
2: &PrecompiledAddress{big.NewInt(100), sha256Func},
3: &PrecompiledAddress{big.NewInt(100), ripemd160Func},
}
func sha256Func(in []byte) []byte {
return ethcrypto.Sha256(in)
}
func ripemd160Func(in []byte) []byte {
return ethutil.RightPadBytes(ethcrypto.Ripemd160(in), 32)
}
func ecrecoverFunc(in []byte) []byte {
// In case of an invalid sig. Defaults to return nil
defer func() { recover() }()
return ethcrypto.Ecrecover(in)
}