added derive_operatorid command to egnkey (#247)

* added derive_operatorid command to egnkey
also refactored commands to be in their own packages to prevent var/flag conflicts

* update pkg name: derive_operatorid -> operatorid

cmd/egnkey/generate.go → cmd/egnkey/generate/generate.go

@@ -1,4 +1,4 @@
-package main
+package generate
 
 import (
 	"encoding/hex"
@@ -42,7 +42,7 @@ var (
 	}
 )
 
-var commandGenerate = &cli.Command{
+var Command = &cli.Command{
 	Name:    "generate",
 	Aliases: []string{"g"},
 	Description: `Generate keys for testing purpose.

cmd/egnkey/main.go

@@ -4,6 +4,9 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/Layr-Labs/eigensdk-go/cmd/egnkey/operatorid"
+	"github.com/Layr-Labs/eigensdk-go/cmd/egnkey/generate"
+	"github.com/Layr-Labs/eigensdk-go/cmd/egnkey/store"
 	"github.com/urfave/cli/v2"
 )
 
@@ -12,8 +15,9 @@ func main() {
 	app.Name = "egnkey"
 	app.Description = "Eigenlayer batch keys manager"
 	app.Commands = []*cli.Command{
-		commandGenerate,
-		commandStore,
+		generate.Command,
+		store.Command,
+		operatorid.Command,
 	}
 
 	app.Usage = "Used to manage batch keys for testing"

cmd/egnkey/operatorid/operatorid.go

@@ -0,0 +1,39 @@
+package operatorid
+
+import (
+	"encoding/hex"
+	"fmt"
+
+	"github.com/Layr-Labs/eigensdk-go/crypto/bls"
+	"github.com/Layr-Labs/eigensdk-go/types"
+	"github.com/urfave/cli/v2"
+)
+
+var (
+	PrivateKey = &cli.StringFlag{
+		Name:     "private-key",
+		Usage:    "(bn254) private key from which to derive operatorId from",
+		Required: true,
+	}
+)
+
+var Command = &cli.Command{
+	Name:        "derive-operator-id",
+	Aliases:     []string{"d"},
+	Description: `Given a private key, output its associated operatorId (hash of bn254 G1 pubkey).`,
+	Action:      derive,
+	Flags: []cli.Flag{
+		PrivateKey,
+	},
+}
+
+func derive(c *cli.Context) error {
+	sk := c.String(PrivateKey.Name)
+	keypair, err := bls.NewKeyPairFromString(sk)
+	if err != nil {
+		return err
+	}
+	operatorId := types.OperatorIdFromKeyPair(keypair)
+	fmt.Println("0x" + hex.EncodeToString(operatorId[:]))
+	return nil
+}

cmd/egnkey/store.go → cmd/egnkey/store/store.go

@@ -1,4 +1,4 @@
-package main
+package store
 
 import (
 	"github.com/Layr-Labs/eigensdk-go/crypto/ecdsa"
@@ -25,7 +25,7 @@ var (
 	}
 )
 
-var commandStore = &cli.Command{
+var Command = &cli.Command{
 	Name:        "convert",
 	Aliases:     []string{"c"},
 	Description: `Stores an ecdsa key to a file, in web3 secret storage format.`,