1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/pubkey/ed25519/ed25519_key.cpp b/src/lib/pubkey/ed25519/ed25519_key.cpp
index 5f5aff369..bdb6a8547 100644
--- a/src/lib/pubkey/ed25519/ed25519_key.cpp
+++ b/src/lib/pubkey/ed25519/ed25519_key.cpp
@@ -175,6 +175,8 @@ class Ed25519_Pure_Sign_Operation final : public PK_Ops::Signature
          return sig;
          }
 
+      size_t signature_length() const override { return 64; }
+
    private:
       std::vector<uint8_t> m_msg;
       const Ed25519_PrivateKey& m_key;
@@ -191,6 +193,8 @@ class Ed25519_Hashed_Sign_Operation final : public PK_Ops::Signature
          m_hash = HashFunction::create_or_throw(hash);
          }
 
+      size_t signature_length() const override { return 64; }
+
       void update(const uint8_t msg[], size_t msg_len) override
          {
          m_hash->update(msg, msg_len);