Use forward-declared Jitter_RNG_Data

src/lib/entropy/entropy_srcs.cpp

@@ -93,14 +93,14 @@ class Jitter_RNG_EntropySource final : public Entropy_Source {
    public:
       size_t poll(RandomNumberGenerator& rng) override {
          const size_t poll_bits = BOTAN_RNG_RESEED_POLL_BITS;
-         rng.reseed_from_rng(m_rng, poll_bits);
+         rng.reseed_from_rng(*m_rng, poll_bits);
          return poll_bits;
       }
 
-      std::string name() const override { return m_rng.name(); }
+      std::string name() const override { return m_rng->name(); }
 
    private:
-      Jitter_RNG m_rng;
+      std::unique_ptr<Jitter_RNG> m_rng;
 };
 
 #endif

src/lib/rng/jitter_rng/jitter_rng.h

@@ -10,19 +10,9 @@
 
 #include <botan/rng.h>
 
-struct rand_data;
-
 namespace Botan {
 
-class BOTAN_DLL Jitter_RNG_Data {
-   public:
-      Jitter_RNG_Data();
-      ~Jitter_RNG_Data();
-      void collect_into_buffer(std::span<uint8_t> buf);
-
-   private:
-      rand_data* m_jitter;
-};
+class BOTAN_DLL Jitter_RNG_Data;
 
 /*
 * RNG using libjitterentropy.
@@ -41,7 +31,7 @@ class BOTAN_PUBLIC_API(3, 6) Jitter_RNG final : public RandomNumberGenerator {
       void fill_bytes_with_input(std::span<uint8_t> out, std::span<const uint8_t> in) override;
 
    private:
-      Jitter_RNG_Data m_jitter;
+      std::unique_ptr<Jitter_RNG_Data> m_jitter;
 };
 }  // namespace Botan