1 files changed, 5 insertions, 0 deletions
diff --git a/src/lib/pk_pad/iso9796/iso9796.h b/src/lib/pk_pad/iso9796/iso9796.h
index fb2a6f699..7e8ad0f68 100644
--- a/src/lib/pk_pad/iso9796/iso9796.h
+++ b/src/lib/pk_pad/iso9796/iso9796.h
@@ -43,6 +43,8 @@ class ISO_9796_DS2 final : public EMSA
       std::unique_ptr<EMSA> new_object() override;
 
       std::string name() const override;
+
+      bool requires_message_recovery() const override { return true; }
    private:
       void update(const uint8_t input[], size_t length) override;
 
@@ -80,6 +82,9 @@ class ISO_9796_DS3 final : public EMSA
       std::unique_ptr<EMSA> new_object() override;
 
       std::string name() const override;
+
+      bool requires_message_recovery() const override { return true; }
+
    private:
       void update(const uint8_t input[], size_t length) override;