diff --git a/tests/security/test-sec-tpm-file.cpp b/tests/security/test-sec-tpm-file.cpp
index 51ecbe2..55bc983 100644
--- a/tests/security/test-sec-tpm-file.cpp
+++ b/tests/security/test-sec-tpm-file.cpp
@@ -65,6 +65,26 @@
   tpm.deleteKeyPairInTpm(keyName);
 }
 
+BOOST_AUTO_TEST_CASE (RandomGenerator)
+{
+  SecTpmFile tpm;
+
+  size_t scale = 1000;
+  size_t size = 256 * scale;
+  uint8_t* block = new uint8_t[size];
+  tpm.generateRandomBlock(block, size);
+
+  map<uint8_t, int> counter;
+  for(size_t i = 0; i < size; i++)
+    counter[block[i]] += 1;
+
+  float dev = 0.0;
+  for(size_t i = 0; i != 255; i++)
+    dev += ((counter[i] - scale) * (counter[i] - scale)) * 1.0 / (scale * scale);
+
+  BOOST_CHECK_CLOSE(dev / 256, 0.001, 100);
+
+}
 BOOST_AUTO_TEST_SUITE_END()
 
 } // namespace ndn
diff --git a/tests/security/test-sec-tpm-osx.cpp b/tests/security/test-sec-tpm-osx.cpp
index 5bd0467..a0a3bb9 100644
--- a/tests/security/test-sec-tpm-osx.cpp
+++ b/tests/security/test-sec-tpm-osx.cpp
@@ -65,6 +65,26 @@
   tpm.deleteKeyPairInTpm(keyName);
 }
 
+BOOST_AUTO_TEST_CASE (RandomGenerator)
+{
+  SecTpmOsx tpm;
+
+  size_t scale = 1000;
+  size_t size = 256 * scale;
+  uint8_t* block = new uint8_t[size];
+  tpm.generateRandomBlock(block, size);
+
+  map<uint8_t, int> counter;
+  for(size_t i = 0; i < size; i++)
+    counter[block[i]] += 1;
+
+  float dev = 0.0;
+  for(size_t i = 0; i != 255; i++)
+    dev += ((counter[i] - scale) * (counter[i] - scale)) * 1.0 / (scale * scale);
+
+  BOOST_CHECK_CLOSE(dev / 256, 0.001, 100);
+
+}
 BOOST_AUTO_TEST_SUITE_END()
 
 } // namespace ndn