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69 lines
1.8 KiB
69 lines
1.8 KiB
package utils
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import (
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"bytes"
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"encoding/binary"
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"log"
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"os/exec"
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"regexp"
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"strconv"
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"github.com/dedis/kyber"
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"github.com/harmony-one/harmony/crypto"
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"github.com/harmony-one/harmony/crypto/pki"
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"github.com/harmony-one/harmony/p2p"
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)
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// ConvertFixedDataIntoByteArray converts an empty interface data to a byte array
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func ConvertFixedDataIntoByteArray(data interface{}) []byte {
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buff := new(bytes.Buffer)
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err := binary.Write(buff, binary.BigEndian, data)
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if err != nil {
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log.Panic(err)
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}
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return buff.Bytes()
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}
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// GetUniqueIDFromPeer ...
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// TODO(minhdoan): this is probably a hack, probably needs some strong non-collision hash.
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func GetUniqueIDFromPeer(peer p2p.Peer) uint16 {
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return GetUniqueIDFromIPPort(peer.IP, peer.Port)
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}
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// GetUniqueIDFromIPPort --
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func GetUniqueIDFromIPPort(ip, port string) uint16 {
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reg, err := regexp.Compile("[^0-9]+")
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if err != nil {
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log.Panic("Regex Compilation Failed", "err", err)
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}
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socketID := reg.ReplaceAllString(ip+port, "") // A integer Id formed by unique IP/PORT pair
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value, _ := strconv.Atoi(socketID)
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return uint16(value)
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}
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// RunCmd runs command `name` with arguments `args`
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func RunCmd(name string, args ...string) error {
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cmd := exec.Command(name, args...)
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if err := cmd.Start(); err != nil {
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log.Fatal(err)
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return err
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}
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log.Println("Command running", name, args)
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go func() {
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if err := cmd.Wait(); err != nil {
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log.Printf("Command finished with error: %v", err)
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} else {
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log.Printf("Command finished successfully")
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}
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}()
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return nil
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}
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// GenKey generates a key given ip and port.
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func GenKey(ip, port string) (kyber.Scalar, kyber.Point) {
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priKey := crypto.Ed25519Curve.Scalar().SetInt64(int64(GetUniqueIDFromIPPort(ip, port))) // TODO: figure out why using a random hash value doesn't work for private key (schnorr)
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pubKey := pki.GetPublicKeyFromScalar(priKey)
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return priKey, pubKey
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}
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