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validation.go
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validation.go
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package monero
import (
"bytes"
"encoding/hex"
"fmt"
"strings"
"github.com/MixinNetwork/mixin/crypto"
ethereum "github.com/ethereum/go-ethereum/crypto"
"github.com/paxosglobal/moneroutil"
)
var (
MoneroChainBase string
MoneroChainId crypto.Hash
)
func init() {
MoneroChainBase = "05c5ac01-31f9-4a69-aa8a-ab796de1d041"
MoneroChainId = crypto.NewHash([]byte(MoneroChainBase))
}
func VerifyAssetKey(assetKey string) error {
if assetKey == MoneroChainBase {
return nil
}
return fmt.Errorf("invalid monero asset key %s", assetKey)
}
func VerifyAddress(address string) error {
if strings.TrimSpace(address) != address {
return fmt.Errorf("invalid monero address %s", address)
}
addr := moneroutil.DecodeMoneroBase58(address)
if len(addr) != 69 {
return fmt.Errorf("invalid monero address %s", address)
}
checksum := ethereum.Keccak256(addr[:len(addr)-4])[:4]
if bytes.Compare(checksum, addr[len(addr)-4:]) != 0 {
return fmt.Errorf("invalid monero address %s", address)
}
if addr[0] != 18 && addr[0] != 42 {
return fmt.Errorf("invalid monero address %s", address)
}
checksum = ethereum.Keccak256([]byte{addr[0]}, addr[1:33], addr[33:65])[:4]
result := moneroutil.EncodeMoneroBase58([]byte{addr[0]}, addr[1:33], addr[33:65], checksum[:])
if result != address {
return fmt.Errorf("invalid monero address %s", address)
}
return nil
}
func VerifyTransactionHash(hash string) error {
if len(hash) != 64 {
return fmt.Errorf("invalid monero transaction hash %s", hash)
}
if strings.ToLower(hash) != hash {
return fmt.Errorf("invalid monero transaction hash %s", hash)
}
h, err := hex.DecodeString(hash)
if err != nil {
return fmt.Errorf("invalid monero transaction hash %s %s", hash, err.Error())
}
if len(h) != 32 {
return fmt.Errorf("invalid monero transaction hash %s", hash)
}
return nil
}
func GenerateAssetId(assetKey string) crypto.Hash {
switch assetKey {
case MoneroChainBase:
return MoneroChainId
default:
panic(assetKey)
}
}