cmd/swarm: added publisher key assertion to act tests (#17471)

cmd/swarm/main.go

@@ -18,6 +18,7 @@ package main
 
 import (
 	"crypto/ecdsa"
+	"encoding/hex"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -208,6 +209,10 @@ var (
 		Name:  "data",
 		Usage: "Initializes the resource with the given hex-encoded data. Data must be prefixed by 0x",
 	}
+	SwarmCompressedFlag = cli.BoolFlag{
+		Name:  "compressed",
+		Usage: "Prints encryption keys in compressed form",
+	}
 )
 
 //declare a few constant error messages, useful for later error check comparisons in test
@@ -252,6 +257,14 @@ func init() {
 			Usage:              "Print version numbers",
 			Description:        "The output of this command is supposed to be machine-readable",
 		},
+		{
+			Action:             keys,
+			CustomHelpTemplate: helpTemplate,
+			Name:               "print-keys",
+			Flags:              []cli.Flag{SwarmCompressedFlag},
+			Usage:              "Print public key information",
+			Description:        "The output of this command is supposed to be machine-readable",
+		},
 		{
 			Action:             upload,
 			CustomHelpTemplate: helpTemplate,
@@ -580,6 +593,17 @@ func main() {
 	}
 }
 
+func keys(ctx *cli.Context) error {
+	privateKey := getPrivKey(ctx)
+	pub := hex.EncodeToString(crypto.FromECDSAPub(&privateKey.PublicKey))
+	pubCompressed := hex.EncodeToString(crypto.CompressPubkey(&privateKey.PublicKey))
+	if !ctx.Bool(SwarmCompressedFlag.Name) {
+		fmt.Println(fmt.Sprintf("publicKey=%s", pub))
+	}
+	fmt.Println(fmt.Sprintf("publicKeyCompressed=%s", pubCompressed))
+	return nil
+}
+
 func version(ctx *cli.Context) error {
 	fmt.Println(strings.Title(clientIdentifier))
 	fmt.Println("Version:", sv.VersionWithMeta)