add generation account binary

cmd/keygen/main.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"strconv"
+
+	crypto2 "github.com/ethereum/go-ethereum/crypto"
+)
+
+var (
+	version string
+	builtBy string
+	builtAt string
+	commit  string
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("Please provide # of keys to be generated")
+		os.Exit(1)
+	}
+
+	if n, err := strconv.Atoi(os.Args[1]); err == nil {
+		for i := 0; i < n; i++ {
+			randomBytes := [32]byte{}
+			_, err := io.ReadFull(rand.Reader, randomBytes[:])
+			if err != nil {
+				fmt.Println("Failed to get randomness for the private key...")
+				return
+			}
+			priKey, err := crypto2.GenerateKey()
+			if err != nil {
+				panic("Failed to generate the private key")
+			}
+			crypto2.FromECDSA(priKey)
+
+			fmt.Printf("{Address: \"%s\", Private: \"%s\", Public: \"%s\"},\n", crypto2.PubkeyToAddress(priKey.PublicKey).Hex(), hex.EncodeToString(crypto2.FromECDSA(priKey)), crypto2.PubkeyToAddress(priKey.PublicKey).Hex())
+		}
+	} else {
+		fmt.Println("Unable to parse # as the argument.")
+	}
+}