Random bit generation in Rep4.

GC/Rep4Prep.cpp

@@ -0,0 +1,33 @@
+/*
+ * Rep4Prep.cpp
+ *
+ */
+
+#include "Rep4Prep.h"
+
+#include "Protocols/Rep4.hpp"
+#include "Protocols/Rep4Input.hpp"
+#include "Protocols/ReplicatedPrep.hpp"
+
+namespace GC
+{
+
+Rep4Prep::Rep4Prep(DataPositions& usage, int) :
+        BufferPrep<Rep4Secret>(usage)
+{
+}
+
+void Rep4Prep::set_protocol(Rep4Secret::Protocol& protocol)
+{
+    this->P = &protocol.P;
+}
+
+void Rep4Prep::buffer_bits()
+{
+    assert(P);
+    Rep4<Rep4Secret> proto(*P);
+    for (int i = 0; i < OnlineOptions::singleton.batch_size; i++)
+        this->bits.push_back(proto.get_random() & 1);
+}
+
+} /* namespace GC */

GC/Rep4Prep.h

@@ -0,0 +1,28 @@
+/*
+ * Rep4Prep.h
+ *
+ */
+
+#ifndef GC_REP4PREP_H_
+#define GC_REP4PREP_H_
+
+#include "Rep4Secret.h"
+#include "PersonalPrep.h"
+#include "Protocols/ReplicatedPrep.h"
+
+namespace GC
+{
+
+class Rep4Prep : public BufferPrep<Rep4Secret>
+{
+public:
+    Rep4Prep(DataPositions& usage, int _ = -1);
+
+    void set_protocol(Rep4Secret::Protocol& protocol);
+
+    void buffer_bits();
+};
+
+} /* namespace GC */
+
+#endif /* GC_REP4PREP_H_ */

GC/Rep4Secret.h

@@ -13,13 +13,15 @@
 namespace GC
 {
 
+class Rep4Prep;
+
 class Rep4Secret : public RepSecretBase<Rep4Secret, 3>
 {
     typedef RepSecretBase<Rep4Secret, 3> super;
     typedef Rep4Secret This;
 
 public:
-    typedef DummyLivePrep<This> LivePrep;
+    typedef Rep4Prep LivePrep;
     typedef Rep4<This> Protocol;
     typedef Rep4MC<This> MC;
     typedef MC MAC_Check;