feat(BUX-190): add keys generation

examples/keys/keys.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"github.com/BuxOrg/go-buxclient/utils"
+)
+
+func main() {
+	// Generate a random set of keys
+	hdXpriv, hdXpub := utils.GenerateRandomSetOfKeys()
+
+	fmt.Println("Your XPriv: ", hdXpriv)
+	fmt.Println("Your XPub: ", hdXpub)
+
+	xpub, err := utils.GetPublicKeyFromHDPrivateKey(hdXpriv.String())
+	if err != nil {
+		panic(err)
+	}
+
+	// hdXpub and xpub should be this same
+	if hdXpub.String() != xpub.String() {
+		panic("xpub and hdXpub are not the same")
+	} else {
+		fmt.Println("Keys generated successfully, xpub and hdXpub are the same")
+	}
+}

utils/utils.go

@@ -5,6 +5,9 @@ import (
 	"crypto/rand"
 	"crypto/sha256"
 	"encoding/hex"
+	"fmt"
+	"github.com/libsv/go-bk/bip39"
+	"github.com/libsv/go-bk/chaincfg"
 	"math"
 	"strconv"
 
@@ -83,3 +86,38 @@ func GetChildNumsFromHex(hexHash string) ([]uint32, error) {
 
 	return childNums, nil
 }
+
+// GenerateRandomSetOfKeys generates a random set of keys - xpriv, xpb and address
+func GenerateRandomSetOfKeys() (hdXpriv *bip32.ExtendedKey, hdXpub *bip32.ExtendedKey) {
+	entropy, err := bip39.GenerateEntropy(160)
+	if err != nil {
+		panic(err)
+	}
+
+	_, seed, err := bip39.Mnemonic(entropy, "")
+
+	if err != nil {
+		fmt.Println(err)
+		panic(err)
+	}
+
+	hdXpriv, err = bip32.NewMaster(seed, &chaincfg.MainNet)
+
+	if err != nil {
+		fmt.Println(err)
+		panic(err)
+	}
+
+	hdXpub, err = hdXpriv.Neuter()
+	return
+}
+
+// GetPublicKeyFromHDPrivateKey returns the public key from the HD private key
+func GetPublicKeyFromHDPrivateKey(hdXpriv string) (hdXpub *bip32.ExtendedKey, err error) {
+	hdKey, err := bip32.NewKeyFromString(hdXpriv)
+	hdXpub, err = hdKey.Neuter()
+	if err != nil {
+		return nil, err
+	}
+	return
+}