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unblind.go
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unblind.go
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package cli
import (
"encoding/hex"
"fmt"
"io/ioutil"
"github.com/cryptoballot/rsablind"
"github.com/newtonproject/newchain-blind/blind"
"github.com/spf13/cobra"
)
func (cli *CLI) buildUnblindCmd() *cobra.Command {
faucetCmd := &cobra.Command{
Use: "unblind <pubkey> <file.blinded.sig> <file.unblinder>",
Short: "Unblind 1NEW for address",
Args: cobra.MinimumNArgs(3),
DisableFlagsInUseLine: true,
Run: func(cmd *cobra.Command, args []string) {
pub, err := blind.LoadPEMPublicKeyFile(args[0])
if err != nil {
fmt.Println(err)
return
}
sig, err := readHexFile(args[1])
if err != nil {
fmt.Println(err)
return
}
unblinder, err := readHexFile(args[2])
if err != nil {
fmt.Println(err)
return
}
unblindSig := rsablind.Unblind(pub, sig, unblinder)
if len(unblindSig) == 0 {
fmt.Println("Unblind Sig error")
return
}
dataFile := fmt.Sprintf("%v.sig", args[2])
if err := ioutil.WriteFile(dataFile, []byte(hex.EncodeToString(unblindSig)), 0644); err != nil {
fmt.Println(err)
return
}
fmt.Println("UnblinderSig: ", dataFile)
fmt.Println("Send unblinder sig file and cash data to others")
},
}
return faucetCmd
}
func readHexFile(name string) ([]byte, error) {
blindedHexByte, err := ioutil.ReadFile(name)
if err != nil {
return nil, err
}
return hex.DecodeString(string(blindedHexByte))
}