cmd/ethkey: support --passwordfile in generate command (#21183)

cmd/ethkey/utils.go

@@ -52,7 +52,7 @@ func promptPassphrase(confirmation bool) string {
 // getPassphrase obtains a passphrase given by the user.  It first checks the
 // --passfile command line flag and ultimately prompts the user for a
 // passphrase.
-func getPassphrase(ctx *cli.Context) string {
+func getPassphrase(ctx *cli.Context, confirmation bool) string {
 	// Look for the --passwordfile flag.
 	passphraseFile := ctx.String(passphraseFlag.Name)
 	if passphraseFile != "" {
@@ -65,7 +65,7 @@ func getPassphrase(ctx *cli.Context) string {
 	}
 
 	// Otherwise prompt the user for the passphrase.
-	return promptPassphrase(false)
+	return promptPassphrase(confirmation)
 }
 
 // signHash is a helper function that calculates a hash for the given message