eth

func CalcGasCost ¶

func CalcGasCost(gasLimit uint64, gasPrice *big.Int) *big.Int

CalcGasCost calculate gas cost given gas limit (units) and gas price (wei)

func FormatAmount ¶

func FormatAmount(amount *big.Int, decimals int) float64

格式化数量，根据少数位数

func IsContract ¶

func IsContract(addr string) bool

若在该地址存储了字节码，该地址是智能合约 当地址上没有字节码时，我们知道它不是一个智能合约，它是一个标准的以太坊账户。

func IsValidAddress ¶

func IsValidAddress(addr interface{}) bool

IsValidAddress validate hex address

func IsValidTxHash ¶

func IsValidTxHash(txHash string) bool

func IsZeroAddress ¶

func IsZeroAddress(addr interface{}) bool

IsZeroAddress validate if it's a 0 address

func NewClient ¶

func NewClient() (*ethclient.Client, error)

func NewWssClient ¶

func NewWssClient() (*ethclient.Client, error)

func SigRSV ¶

func SigRSV(isig interface{}) ([32]byte, [32]byte, uint8)

SigRSV signatures R S V returned as arrays

func Sign ¶

func Sign(privateKeyHex string, msg string) string

使用私钥对消息签名

func SignWithPrefix ¶

func SignWithPrefix(privateKeyHex string, msg string) string

会对消息增加一个特定消息前缀，用于兼容metamask签名

func ToDecimal ¶

func ToDecimal(val interface{}, decimals int) decimal.Decimal

ToDecimal wei to decimals

func ToWei ¶

func ToWei(val interface{}, decimals int) *big.Int

ToWei decimals to wei

func Verify ¶

func Verify(fromAddr, signHex, msg string) bool

func VerifyWithPrefix ¶

func VerifyWithPrefix(fromAddr, signHex, msg string) bool