Always require OS randomness when generating secret keys

src/random.h

@@ -10,11 +10,8 @@
 
 #include <stdint.h>
 
-/**
- * Seed OpenSSL PRNG with additional entropy data
- */
+/* Seed OpenSSL PRNG with additional entropy data */
 void RandAddSeed();
-void RandAddSeedPerfmon();
 
 /**
  * Functions to gather random data via the OpenSSL PRNG
@@ -24,6 +21,12 @@ uint64_t GetRand(uint64_t nMax);
 int GetRandInt(int nMax);
 uint256 GetRandHash();
 
+/**
+ * Function to gather random data from multiple sources, failing whenever any
+ * of those source fail to provide a result.
+ */
+void GetStrongRandBytes(unsigned char* buf, int num);
+
 /**
  * Seed insecure_rand using the random pool.
  * @param Deterministic Use a deterministic seed