4.48 beta

CPP/7zip/Crypto/7zAES/7zAES.cpp

@@ -1,4 +1,4 @@
-// 7z_AES.cpp
+// 7zAES.cpp
 
 #include "StdAfx.h"
 
@@ -8,9 +8,12 @@
 #include "../../Common/StreamUtils.h"
 #include "../AES/MyAES.h"
 #include "../Hash/Sha256.h"
-
 #include "7zAES.h"
 
+#ifndef EXTRACT_ONLY
+#include "../Hash/RandGen.h"
+#endif
+
 using namespace NWindows;
 
 namespace NCrypto {
@@ -89,7 +92,8 @@ static CKeyInfoCache g_GlobalKeyCache(32);
 static NSynchronization::CCriticalSection g_GlobalKeyCacheCriticalSection;
 
 CBase::CBase():
-  _cachedKeys(16)
+  _cachedKeys(16),
+  _ivSize(0)
 {
   for (int i = 0; i < sizeof(_iv); i++)
     _iv[i] = 0;
@@ -111,40 +115,31 @@ void CBase::CalculateDigest()
   }
 }
 
+#ifndef EXTRACT_ONLY
 
 /*
-static void GetRandomData(Byte *data)
+STDMETHODIMP CEncoder::ResetSalt()
 {
-  // probably we don't need truly random.
-  // it's enough to prevent dictionary attack;
-  // but it gives some info about time when compressing 
-  // was made. 
-  UInt64 tempValue;
-  SYSTEMTIME systemTime;
-  FILETIME fileTime;
-  ::GetSystemTime(&systemTime);
-  ::SystemTimeToFileTime(&systemTime, &fileTime);
-  tempValue = *(const UInt64 *)&fileTime;
-  LARGE_INTEGER counter;
-  ::QueryPerformanceCounter(&counter);
-  tempValue += *(const UInt64 *)&counter;
-  tempValue += (UInt64)(GetTickCount()) << 32;
-  *(UInt64 *)data = tempValue;
+  _key.SaltSize = 4;
+  g_RandomGenerator.Generate(_key.Salt, _key.SaltSize);
+  return S_OK;
 }
 */
 
+STDMETHODIMP CEncoder::ResetInitVector()
+{
+  _ivSize = 8;
+  g_RandomGenerator.Generate(_iv, _ivSize);
+  return S_OK;
+}
+
 STDMETHODIMP CEncoder::WriteCoderProperties(ISequentialOutStream *outStream)
 { 
-  _key.Init();
-  for (UInt32 i = 0; i < sizeof(_iv); i++)
+   // _key.Init();
+   for (UInt32 i = _ivSize; i < sizeof(_iv); i++)
     _iv[i] = 0;
 
-  _key.SaltSize = 0;
-  
-  // _key.SaltSize = 8;
-  // GetRandomData(_key.Salt);
-
-  int ivSize = 0;
+  UInt32 ivSize = _ivSize;
   
   // _key.NumCyclesPower = 0x3F;
   _key.NumCyclesPower = 18;
@@ -170,6 +165,14 @@ STDMETHODIMP CEncoder::WriteCoderProperties(ISequentialOutStream *outStream)
   return S_OK;
 }
 
+HRESULT CEncoder::CreateFilter()
+{
+  _aesFilter = new CAES_CBC_Encoder;
+  return S_OK;
+}
+
+#endif
+
 STDMETHODIMP CDecoder::SetDecoderProperties2(const Byte *data, UInt32 size)
 {
   _key.Init();
@@ -229,12 +232,6 @@ STDMETHODIMP_(UInt32) CBaseCoder::Filter(Byte *data, UInt32 size)
   return _aesFilter->Filter(data, size);
 }
 
-HRESULT CEncoder::CreateFilter()
-{
-  _aesFilter = new CAES_CBC_Encoder;
-  return S_OK;
-}
-
 HRESULT CDecoder::CreateFilter()
 {
   _aesFilter = new CAES_CBC_Decoder;

CPP/7zip/Crypto/7zAES/7zAES.h

@@ -6,7 +6,7 @@
 #include "Common/MyCom.h"
 #include "Common/Types.h"
 #include "Common/Buffer.h"
-#include "Common/Vector.h"
+#include "Common/MyVector.h"
 
 #include "../../ICoder.h"
 #include "../../IPassword.h"
@@ -55,7 +55,7 @@ class CBase
 protected:
   CKeyInfo _key;
   Byte _iv[16];
-  // int _ivSize;
+  UInt32 _ivSize;
   void CalculateDigest();
   CBase();
 };
@@ -80,17 +80,26 @@ public:
   STDMETHOD(CryptoSetPassword)(const Byte *data, UInt32 size);
 };
 
+#ifndef EXTRACT_ONLY
+
 class CEncoder: 
   public CBaseCoder,
-  public ICompressWriteCoderProperties
+  public ICompressWriteCoderProperties,
+  // public ICryptoResetSalt,
+  public ICryptoResetInitVector
 {
   virtual HRESULT CreateFilter();
 public:
-  MY_UNKNOWN_IMP2(
+  MY_UNKNOWN_IMP3(
       ICryptoSetPassword,
-      ICompressWriteCoderProperties)
+      ICompressWriteCoderProperties,
+      // ICryptoResetSalt,
+      ICryptoResetInitVector)
   STDMETHOD(WriteCoderProperties)(ISequentialOutStream *outStream);
+  // STDMETHOD(ResetSalt)();
+  STDMETHOD(ResetInitVector)();
 };
+#endif
 
 class CDecoder: 
   public CBaseCoder,