1 files changed, 6 insertions, 0 deletions
diff --git a/src/key.cpp b/src/key.cpp
index 9d982fc44f..c17f6a0ae2 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -163,6 +163,12 @@ void CKey::MakeNewKey(bool fCompressedIn) {
     fCompressed = fCompressedIn;
 }
 
+bool CKey::Negate()
+{
+    assert(fValid);
+    return secp256k1_ec_privkey_negate(secp256k1_context_sign, keydata.data());
+}
+
 CPrivKey CKey::GetPrivKey() const {
     assert(fValid);
     CPrivKey privkey;