2 files changed, 8 insertions, 1 deletions
diff --git a/lang/cpp/src/key.cpp b/lang/cpp/src/key.cpp
index 3cc26a77..9eebbf01 100644
--- a/lang/cpp/src/key.cpp
+++ b/lang/cpp/src/key.cpp
@@ -476,7 +476,12 @@ bool Subkey::isCardKey() const
 
 const char *Subkey::cardSerialNumber() const
 {
-    return subkey ? subkey->card_number : 0 ;
+    return subkey ? subkey->card_number : nullptr;
+}
+
+const char *Subkey::keyGrip() const
+{
+    return subkey ? subkey->keygrip : nullptr;
 }
 
 bool Subkey::isSecret() const
diff --git a/lang/cpp/src/key.h b/lang/cpp/src/key.h
index b0599c7f..8c11a9d4 100644
--- a/lang/cpp/src/key.h
+++ b/lang/cpp/src/key.h
@@ -270,6 +270,8 @@ public:
 
     const char *cardSerialNumber() const;
 
+    const char *keyGrip() const;
+
 private:
     shared_gpgme_key_t key;
     gpgme_sub_key_t subkey;