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main.go
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main.go
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package main
import (
"bufio"
"encoding/hex"
"falconWallet/address"
"fmt"
"github.com/ethereum/go-ethereum/crypto"
"github.com/open-quantum-safe/liboqs-go/oqs"
"log"
"os"
"strconv"
"strings"
)
func main() {
fmt.Println("This is an experimental mini-wallet using Falcon-512 with NIST round 2 standardization. Do not use in production.")
const sigName = "Falcon-512"
var signer oqs.Signature
defer signer.Clean()
for {
fmt.Println("1. Generate a new address")
fmt.Println("2. Import an address")
fmt.Println("3. Exit")
choice, err := getUserChoice()
if err != nil {
fmt.Println("Invalid input. Please enter a number.")
continue
}
switch choice {
case 1:
if err := signer.Init(sigName, nil); err != nil {
log.Fatal(err)
}
pubKey, err := signer.GenerateKeyPair()
if err != nil {
log.Fatal(err)
}
hexPubKey := hex.EncodeToString(pubKey)
fmt.Println("Signer public key: ", hexPubKey)
addr, err := address.PubToAddress(pubKey)
if err != nil {
log.Fatal(err)
}
fmt.Println("Signer Address: ", hex.EncodeToString(addr))
goto mainLoop
case 2:
fmt.Println("Address import will be supported in the next update.")
case 3:
os.Exit(0)
default:
fmt.Println("Invalid choice. Please enter a number between 1 and 3.")
}
}
mainLoop:
for {
fmt.Println("1. Sign a message")
fmt.Println("2. Verify a message")
fmt.Println("3. Export private key")
fmt.Println("4. Exit")
choice, err := getUserChoice()
if err != nil {
fmt.Println("Invalid input. Please enter a number.")
continue
}
switch choice {
case 1:
message := generateMessage()
signature, err := signer.Sign(message)
if err != nil {
log.Fatal(err)
}
strSignature := hex.EncodeToString(signature)
fmt.Println("Your signature is: ", strSignature)
case 2:
message := generateMessage()
verifier := oqs.Signature{}
defer verifier.Clean()
if err := verifier.Init(sigName, nil); err != nil {
log.Fatal(err)
}
signature := getSignature()
pubKey := getPubKey()
isValid, err := verifier.Verify(message, signature, pubKey)
if err != nil {
log.Fatal(err)
}
fmt.Println("Valid signature?", isValid)
case 3:
secretKey := signer.ExportSecretKey()
strSecretKey := hex.EncodeToString(secretKey)
fmt.Println("Your secret key is: ", strSecretKey)
case 4:
os.Exit(0)
default:
fmt.Println("Invalid choice. Please enter a number between 1 and 4.")
}
}
}
func getUserChoice() (int, error) {
reader := bufio.NewReader(os.Stdin)
fmt.Print("Enter your choice: ")
input, err := reader.ReadString('\n')
if err != nil {
return 0, err
}
input = strings.TrimSpace(input)
return strconv.Atoi(input)
}
func getPubKey() []byte {
reader := bufio.NewReader(os.Stdin)
fmt.Print("Enter a Falcon-512 public key: ")
pubKey, _ := reader.ReadString('\n')
pubKey = strings.TrimSpace(pubKey)
bytePubKey, _ := hex.DecodeString(pubKey)
return bytePubKey
}
func getSignature() []byte {
reader := bufio.NewReader(os.Stdin)
fmt.Print("Enter a signature to be verified: ")
signature, _ := reader.ReadString('\n')
signature = strings.TrimSpace(signature)
byteSignature, _ := hex.DecodeString(signature)
return byteSignature
}
func generateMessage() []byte {
reader := bufio.NewReader(os.Stdin)
fmt.Print("Enter a message: ")
message, _ := reader.ReadString('\n')
message = strings.TrimSpace(message)
hashedMessage := crypto.Keccak256([]byte(message))
prefix := []byte("Lattice Signed Message:")
finalMessage := crypto.Keccak256(append(prefix, hashedMessage...))
return finalMessage
}