VeraCrypt
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-rw-r--r--src/Common/Dlgcode.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c
index 3d8ee6fc..6d6ed69b 100644
--- a/src/Common/Dlgcode.c
+++ b/src/Common/Dlgcode.c
@@ -60,6 +60,8 @@
#include "Boot/Windows/BootCommon.h"
#include "Progress.h"
#include "zip.h"
+#include "rdrand.h"
+#include "jitterentropy.h"
#ifdef TCMOUNT
#include "Mount/Mount.h"
@@ -3203,6 +3205,17 @@ void InitApp (HINSTANCE hInstance, wchar_t *lpszCommandLine)
InitHelpFileName ();
#ifndef SETUP
+#ifdef _WIN64
+ if (IsOSAtLeast (WIN_7))
+ {
+ EnableRamEncryption ((ReadDriverConfigurationFlags() & VC_DRIVER_CONFIG_ENABLE_RAM_ENCRYPTION) ? TRUE : FALSE);
+ if (IsRamEncryptionEnabled())
+ {
+ if (!InitializeSecurityParameters(GetAppRandomSeed))
+ AbortProcess("OUTOFMEMORY");
+ }
+ }
+#endif
if (!EncryptionThreadPoolStart (ReadEncryptionThreadPoolFreeCpuCountLimit()))
{
handleWin32Error (NULL, SRC_POS);
@@ -13894,3 +13907,72 @@ BOOL BufferHasPattern (const unsigned char* buffer, size_t bufferLen, const void
return bRet;
}
+
+#if !defined(SETUP) && defined(_WIN64)
+
+#define RtlGenRandom SystemFunction036
+extern "C" BOOLEAN NTAPI RtlGenRandom(PVOID RandomBuffer, ULONG RandomBufferLength);
+
+void GetAppRandomSeed (unsigned char* pbRandSeed, size_t cbRandSeed)
+{
+ LARGE_INTEGER iSeed;
+ SYSTEMTIME sysTime;
+ byte digest[WHIRLPOOL_DIGESTSIZE];
+ WHIRLPOOL_CTX tctx;
+ size_t count;
+
+ while (cbRandSeed)
+ {
+ WHIRLPOOL_init (&tctx);
+ // we hash current content of digest buffer which is uninitialized the first time
+ WHIRLPOOL_add (digest, WHIRLPOOL_DIGESTSIZE, &tctx);
+
+ // we use various time information as source of entropy
+ GetSystemTime (&sysTime);
+ WHIRLPOOL_add ((unsigned char *) &sysTime, sizeof(sysTime), &tctx);
+ if (QueryPerformanceCounter (&iSeed))
+ WHIRLPOOL_add ((unsigned char *) &(iSeed.QuadPart), sizeof(iSeed.QuadPart), &tctx);
+ if (QueryPerformanceFrequency (&iSeed))
+ WHIRLPOOL_add ((unsigned char *) &(iSeed.QuadPart), sizeof(iSeed.QuadPart), &tctx);
+
+ /* use Windows random generator as entropy source */
+ if (RtlGenRandom (digest, sizeof (digest)))
+ WHIRLPOOL_add (digest, sizeof(digest), &tctx);
+
+ /* use JitterEntropy library to get good quality random bytes based on CPU timing jitter */
+ if (0 == jent_entropy_init ())
+ {
+ struct rand_data *ec = jent_entropy_collector_alloc (1, 0);
+ if (ec)
+ {
+ ssize_t rndLen = jent_read_entropy (ec, (char*) digest, sizeof (digest));
+ if (rndLen > 0)
+ WHIRLPOOL_add (digest, (unsigned int) rndLen, &tctx);
+ jent_entropy_collector_free (ec);
+ }
+ }
+
+ // use RDSEED or RDRAND from CPU as source of entropy if enabled
+ if ( IsCpuRngEnabled() &&
+ ( (HasRDSEED() && RDSEED_getBytes (digest, sizeof (digest)))
+ || (HasRDRAND() && RDRAND_getBytes (digest, sizeof (digest)))
+ ))
+ {
+ WHIRLPOOL_add (digest, sizeof(digest), &tctx);
+ }
+ WHIRLPOOL_finalize (&tctx, digest);
+
+ count = VC_MIN (cbRandSeed, sizeof (digest));
+
+ // copy digest value to seed buffer
+ memcpy (pbRandSeed, digest, count);
+ cbRandSeed -= count;
+ pbRandSeed += count;
+ }
+
+ FAST_ERASE64 (digest, sizeof (digest));
+ FAST_ERASE64 (&iSeed.QuadPart, 8);
+ burn (&sysTime, sizeof(sysTime));
+ burn (&tctx, sizeof(tctx));
+}
+#endif