1 files changed, 144 insertions, 0 deletions
diff --git a/src/core/rng.cpp b/src/core/rng.cpp
new file mode 100644
index 000000000..9bed40dc1
--- /dev/null
+++ b/src/core/rng.cpp
@@ -0,0 +1,144 @@
+/*************************************************
+* Random Number Generator Base Source File       *
+* (C) 1999-2008 Jack Lloyd                       *
+*************************************************/
+
+#include <botan/rng.h>
+#include <botan/util.h>
+#include <botan/parsing.h>
+#include <botan/timers.h>
+
+#if defined(BOTAN_HAS_RANDPOOL)
+  #include <botan/randpool.h>
+#endif
+
+#if defined(BOTAN_HAS_X931_RNG)
+  #include <botan/x931_rng.h>
+#endif
+
+#if defined(BOTAN_HAS_TIMER_HARDWARE)
+  #include <botan/tm_hard.h>
+#elif defined(BOTAN_HAS_TIMER_POSIX)
+  #include <botan/tm_posix.h>
+#elif defined(BOTAN_HAS_TIMER_UNIX)
+  #include <botan/tm_unix.h>
+#elif defined(BOTAN_HAS_TIMER_WIN32)
+  #include <botan/tm_win32.h>
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_DEVICE)
+  #include <botan/es_dev.h>
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_EGD)
+  #include <botan/es_egd.h>
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_UNIX)
+  #include <botan/es_unix.h>
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_BEOS)
+  #include <botan/es_beos.h>
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI)
+  #include <botan/es_capi.h>
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32)
+  #include <botan/es_win32.h>
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_FTW)
+  #include <botan/es_ftw.h>
+#endif
+
+namespace Botan {
+
+/*************************************************
+* Default fast poll for EntropySources           *
+*************************************************/
+u32bit EntropySource::fast_poll(byte buf[], u32bit len)
+   {
+   return this->slow_poll(buf, len);
+   }
+
+/*************************************************
+* Get a single random byte                       *
+*************************************************/
+byte RandomNumberGenerator::next_byte()
+   {
+   byte out;
+   this->randomize(&out, 1);
+   return out;
+   }
+
+/*************************************************
+* Create and seed a new RNG object               *
+*************************************************/
+RandomNumberGenerator* RandomNumberGenerator::make_rng()
+   {
+   RandomNumberGenerator* rng = 0;
+
+#if defined(BOTAN_HAS_RANDPOOL)
+   rng = new Randpool("AES-256", "HMAC(SHA-256)");
+
+#if defined(BOTAN_HAS_X931_RNG)
+   rng = new ANSI_X931_RNG("AES-256", rng);
+#endif
+
+#if defined(BOTAN_HAS_TIMER_HARDWARE)
+   rng->add_entropy_source(new Hardware_Timer);
+#elif defined(BOTAN_HAS_TIMER_POSIX)
+   rng->add_entropy_source(new POSIX_Timer);
+#elif defined(BOTAN_HAS_TIMER_UNIX)
+   rng->add_entropy_source(new Unix_Timer);
+#elif defined(BOTAN_HAS_TIMER_WIN32)
+   rng->add_entropy_source(new Win32_Timer);
+#else
+   rng->add_entropy_source(new Timer);
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_DEVICE)
+   rng->add_entropy_source(
+      new Device_EntropySource(
+         split_on("/dev/random:/dev/srandom:/dev/urandom", ':')
+         )
+      );
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_EGD)
+   rng->add_entropy_source(
+      new EGD_EntropySource(split_on("/var/run/egd-pool:/dev/egd-pool", ':'))
+      );
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI)
+   rng->add_entropy_source(new Win32_CAPI_EntropySource);
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32)
+   rng->add_entropy_source(new Win32_EntropySource);
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_UNIX)
+   rng->add_entropy_source(
+      new Unix_EntropySource(split_on("/bin:/sbin:/usr/bin:/usr/sbin", ':'))
+      );
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_BEOS)
+   rng->add_entropy_source(new BeOS_EntropySource);
+#endif
+
+#if defined(BOTAN_HAS_ENTROPY_SRC_FTW)
+   rng->add_entropy_source(new FTW_EntropySource("/proc"));
+#endif
+
+#endif
+
+   return rng;
+   }
+
+}