remove_key fix

Signed-off-by: JuliannaReyes <[email protected]>

remove_key.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/flynn/go-docopt"
+	"github.com/theupdateframework/go-tuf"
+
+
+)
+func init() {
+	register("remove-key", cmdRemoveKey, `
+usage: tuf remove-key [--expires=<days>] <role> <id>
+
+Remove a signing key
+
+Before the key is removed the key will be first revoked
+The key will then be removed from the root metadata file and if the key is present in 
+"keys" directory it will also be removed 
+
+Options:
+  --expires=<days>   Set the root metadata file to expire <days> days from now.
+`)
+}
+
+func cmdRemoveKey(args *docopt.Args, repo *tuf.Repo) error {
+	role := args.String["<roles>"]
+	keyID := args.String["<id>"]
+	if err := repo.RevokeKey(role, keyID); err != nil{
+		return err
+	}
+	keyPath := filepath.Join("keys", keyID)
+	if _ , err := os.Stat(keyPath); err==nil{
+		if err := os.Remove(keyPath); err != nil{
+			return err
+		}
+	}
+	return nil
+}