46 lines
902 B
Go
46 lines
902 B
Go
package address
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import (
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"encoding/hex"
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"fmt"
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"strconv"
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"strings"
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"golang.org/x/crypto/sha3"
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)
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func SarafuAddress(address string) (string, error) {
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l := len(address)
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if l < 40 || l > 42 {
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return "", fmt.Errorf("%s is not a valid eth address", address)
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}
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if len(address) == 42 {
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return strings.ToLower(address)[2:], nil
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}
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return strings.ToLower(address), nil
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}
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func Checksum(address string) string {
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address = strings.ToLower(address)
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address = strings.Replace(address, "0x", "", 1)
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sha := sha3.NewLegacyKeccak256()
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sha.Write([]byte(address))
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hash := sha.Sum(nil)
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hashstr := hex.EncodeToString(hash)
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result := []string{"0x"}
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for i, v := range address {
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res, _ := strconv.ParseInt(string(hashstr[i]), 16, 64)
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if res > 7 {
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result = append(result, strings.ToUpper(string(v)))
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continue
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}
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result = append(result, string(v))
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}
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return strings.Join(result, "")
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}
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