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-rw-r--r--src/lib/pubkey/xmss/xmss_privatekey.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/lib/pubkey/xmss/xmss_privatekey.h b/src/lib/pubkey/xmss/xmss_privatekey.h
index d362f99b5..2bfcbc82e 100644
--- a/src/lib/pubkey/xmss/xmss_privatekey.h
+++ b/src/lib/pubkey/xmss/xmss_privatekey.h
@@ -91,6 +91,8 @@ class BOTAN_PUBLIC_API(2,0) XMSS_PrivateKey final : public virtual XMSS_PublicKe
set_unused_leaf_index(idx_leaf);
}
+ bool stateful_operation() const override { return true; }
+
/**
* Retrieves the last unused leaf index of the private key. Reusing a leaf
* by utilizing leaf indices lower than the last unused leaf index will