Move lib into src

3 files changed, 160 insertions, 0 deletions

diff --git a/src/lib/entropy/hres_timer/hres_timer.cpp b/src/lib/entropy/hres_timer/hres_timer.cpp
new file mode 100644
index 000000000..7295a119b
--- /dev/null
+++ b/src/lib/entropy/hres_timer/hres_timer.cpp
@@ -0,0 +1,117 @@
+/*
+* High Resolution Timestamp Entropy Source
+* (C) 1999-2009,2011 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/internal/hres_timer.h>
+#include <botan/cpuid.h>
+
+#if defined(BOTAN_TARGET_OS_HAS_QUERY_PERF_COUNTER)
+  #include <windows.h>
+#endif
+
+namespace Botan {
+
+/*
+* Get the timestamp
+*/
+void High_Resolution_Timestamp::poll(Entropy_Accumulator& accum)
+   {
+   // Don't count the timestamp as contributing any entropy
+   const double ESTIMATED_ENTROPY_PER_BYTE = 0.0;
+
+#if defined(BOTAN_TARGET_OS_HAS_QUERY_PERF_COUNTER)
+   {
+   LARGE_INTEGER tv;
+   ::QueryPerformanceCounter(&tv);
+   accum.add(tv.QuadPart, ESTIMATED_ENTROPY_PER_BYTE);
+   }
+#endif
+
+#if defined(BOTAN_TARGET_OS_HAS_CLOCK_GETTIME)
+
+#define CLOCK_POLL(src)                                      \
+   do {                                                      \
+     struct timespec ts;                                     \
+     ::clock_gettime(src, &ts);                              \
+     accum.add(&ts, sizeof(ts), ESTIMATED_ENTROPY_PER_BYTE); \
+   } while(0)
+
+#if defined(CLOCK_REALTIME)
+   CLOCK_POLL(CLOCK_REALTIME);
+#endif
+
+#if defined(CLOCK_REALTIME_COARSE)
+   CLOCK_POLL(CLOCK_REALTIME_COARSE);
+#endif
+
+#if defined(CLOCK_MONOTONIC)
+   CLOCK_POLL(CLOCK_MONOTONIC);
+#endif
+
+#if defined(CLOCK_MONOTONIC_COARSE)
+   CLOCK_POLL(CLOCK_MONOTONIC_COARSE);
+#endif
+
+#if defined(CLOCK_MONOTONIC_RAW)
+   CLOCK_POLL(CLOCK_MONOTONIC_RAW);
+#endif
+
+#if defined(CLOCK_BOOTTIME)
+   CLOCK_POLL(CLOCK_BOOTTIME);
+#endif
+
+#if defined(CLOCK_PROCESS_CPUTIME_ID)
+   CLOCK_POLL(CLOCK_PROCESS_CPUTIME_ID);
+#endif
+
+#if defined(CLOCK_THREAD_CPUTIME_ID)
+   CLOCK_POLL(CLOCK_THREAD_CPUTIME_ID);
+#endif
+
+#undef CLOCK_POLL
+
+#endif
+
+#if BOTAN_USE_GCC_INLINE_ASM
+
+   u64bit rtc = 0;
+
+#if defined(BOTAN_TARGET_CPU_IS_X86_FAMILY)
+   if(CPUID::has_rdtsc()) // not availble on all x86 CPUs
+      {
+      u32bit rtc_low = 0, rtc_high = 0;
+      asm volatile("rdtsc" : "=d" (rtc_high), "=a" (rtc_low));
+      rtc = (static_cast<u64bit>(rtc_high) << 32) | rtc_low;
+      }
+
+#elif defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY)
+   u32bit rtc_low = 0, rtc_high = 0;
+   asm volatile("mftbu %0; mftb %1" : "=r" (rtc_high), "=r" (rtc_low));
+   rtc = (static_cast<u64bit>(rtc_high) << 32) | rtc_low;
+
+#elif defined(BOTAN_TARGET_ARCH_IS_ALPHA)
+   asm volatile("rpcc %0" : "=r" (rtc));
+
+#elif defined(BOTAN_TARGET_ARCH_IS_SPARC64) && !defined(BOTAN_TARGET_OS_IS_OPENBSD)
+   asm volatile("rd %%tick, %0" : "=r" (rtc));
+
+#elif defined(BOTAN_TARGET_ARCH_IS_IA64)
+   asm volatile("mov %0=ar.itc" : "=r" (rtc));
+
+#elif defined(BOTAN_TARGET_ARCH_IS_S390X)
+   asm volatile("stck 0(%0)" : : "a" (&rtc) : "memory", "cc");
+
+#elif defined(BOTAN_TARGET_ARCH_IS_HPPA)
+   asm volatile("mfctl 16,%0" : "=r" (rtc)); // 64-bit only?
+
+#endif
+
+   accum.add(rtc, ESTIMATED_ENTROPY_PER_BYTE);
+
+#endif
+   }
+
+}
diff --git a/src/lib/entropy/hres_timer/hres_timer.h b/src/lib/entropy/hres_timer/hres_timer.h
new file mode 100644
index 000000000..8b95c8308
--- /dev/null
+++ b/src/lib/entropy/hres_timer/hres_timer.h
@@ -0,0 +1,30 @@
+/*
+* High Resolution Timestamp Entropy Source
+* (C) 1999-2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_ENTROPY_SRC_HRES_TIMER_H__
+#define BOTAN_ENTROPY_SRC_HRES_TIMER_H__
+
+#include <botan/entropy_src.h>
+
+namespace Botan {
+
+/**
+* Entropy source using high resolution timers
+*
+* @note Any results from timers are marked as not contributing entropy
+* to the poll, as a local attacker could observe them directly.
+*/
+class High_Resolution_Timestamp : public EntropySource
+   {
+   public:
+      std::string name() const { return "High Resolution Timestamp"; }
+      void poll(Entropy_Accumulator& accum);
+   };
+
+}
+
+#endif
diff --git a/src/lib/entropy/hres_timer/info.txt b/src/lib/entropy/hres_timer/info.txt
new file mode 100644
index 000000000..dfe8fab0b
--- /dev/null
+++ b/src/lib/entropy/hres_timer/info.txt
@@ -0,0 +1,13 @@
+define ENTROPY_SRC_HIGH_RESOLUTION_TIMER 20131128
+
+<source>
+hres_timer.cpp
+</source>
+
+<header:internal>
+hres_timer.h
+</header:internal>
+
+<libs>
+linux -> rt
+</libs>