[System.Security.SecurityCritical] // auto-generated
private void ProtectMemory(SafeBSTRHandle decryptedBuffer)
{
Debug.Assert(!decryptedBuffer.IsInvalid, "Invalid buffer!");
if (_decryptedLength == 0)
{
return;
}
try
{
SafeBSTRHandle newEncryptedBuffer = null;
if (Interop.Crypt32.CryptProtectData(decryptedBuffer, out newEncryptedBuffer))
{
_encryptedBuffer.Dispose();
_encryptedBuffer = newEncryptedBuffer;
}
else
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
}
finally
{
decryptedBuffer.ClearBuffer();
}
}
[System.Security.SecuritySafeCritical] // auto-generated
private unsafe void InsertAtCore(int index, char c)
{
byte * bufferPtr = null;
SafeBSTRHandle decryptedBuffer = null;
try
{
decryptedBuffer = UnProtectMemory();
EnsureCapacity(ref decryptedBuffer, _decryptedLength + 1);
decryptedBuffer.AcquirePointer(ref bufferPtr);
char *pBuffer = (char *)bufferPtr;
for (int i = _decryptedLength; i > index; i--)
{
pBuffer[i] = pBuffer[i - 1];
}
pBuffer[index] = c;
++_decryptedLength;
}
finally
{
ProtectMemory(decryptedBuffer);
if (bufferPtr != null)
{
decryptedBuffer.ReleasePointer();
}
}
}
internal static SafeBSTRHandle Allocate(String src, uint len)
{
SafeBSTRHandle bstr = SysAllocStringLen(src, len);
bstr.Initialize(len * sizeof(char));
return(bstr);
}
internal unsafe static void Copy(SafeBSTRHandle source, SafeBSTRHandle target, uint bytesToCopy)
{
if (bytesToCopy == 0)
{
return;
}
byte* sourcePtr = null, targetPtr = null;
try
{
source.AcquirePointer(ref sourcePtr);
target.AcquirePointer(ref targetPtr);
Debug.Assert(source.ByteLength >= bytesToCopy, "Source buffer is too small.");
Buffer.MemoryCopy(sourcePtr, targetPtr, target.ByteLength, bytesToCopy);
}
finally
{
if (targetPtr != null)
{
target.ReleasePointer();
}
if (sourcePtr != null)
{
source.ReleasePointer();
}
}
}
internal unsafe static void Copy(SafeBSTRHandle source, SafeBSTRHandle target)
{
byte *sourcePtr = null, targetPtr = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
source.AcquirePointer(ref sourcePtr);
target.AcquirePointer(ref targetPtr);
Contract.Assert(Win32Native.SysStringLen((IntPtr)targetPtr) >= Win32Native.SysStringLen((IntPtr)sourcePtr), "Target buffer is not large enough!");
Buffer.Memcpy(targetPtr, sourcePtr, (int)Win32Native.SysStringLen((IntPtr)sourcePtr) * 2);
}
finally
{
if (sourcePtr != null)
{
source.ReleasePointer();
}
if (targetPtr != null)
{
target.ReleasePointer();
}
}
}
[System.Security.SecuritySafeCritical] // auto-generated
private unsafe void RemoveAtCore(int index)
{
byte * bufferPtr = null;
SafeBSTRHandle decryptedBuffer = null;
try
{
decryptedBuffer = UnProtectMemory();
decryptedBuffer.AcquirePointer(ref bufferPtr);
char *pBuffer = (char *)bufferPtr;
for (int i = index; i < _decryptedLength - 1; i++)
{
pBuffer[i] = pBuffer[i + 1];
}
pBuffer[--_decryptedLength] = (char)0;
}
finally
{
ProtectMemory(decryptedBuffer);
if (bufferPtr != null)
{
decryptedBuffer.ReleasePointer();
}
}
}
[System.Security.SecuritySafeCritical] // auto-generated
public void SetAt(int index, char c)
{
lock (_methodLock)
{
if (index < 0 || index >= _decryptedLength)
{
throw new ArgumentOutOfRangeException("index", SR.ArgumentOutOfRange_IndexString);
}
Debug.Assert(index <= Int32.MaxValue / sizeof(char));
EnsureNotDisposed();
EnsureNotReadOnly();
SafeBSTRHandle decryptedBuffer = null;
try
{
decryptedBuffer = UnProtectMemory();
decryptedBuffer.Write <char>((uint)index * sizeof(char), c);
}
finally
{
ProtectMemory(decryptedBuffer);
}
}
}
[System.Security.SecurityCritical] // auto-generated
internal SecureString(SecureString str)
{
AllocateBuffer(str.BufferLength);
SafeBSTRHandle.Copy(str.m_buffer, this.m_buffer);
m_length = str.m_length;
m_encrypted = str.m_encrypted;
}
internal static SafeBSTRHandle Allocate(string src, uint len)
{
SafeBSTRHandle handle = SysAllocStringLen(src, len);
handle.Initialize((ulong)(len * 2));
return(handle);
}
[System.Security.SecurityCritical] // auto-generated
private unsafe void InitializeSecureString(char *value, int length)
{
if (length == 0)
{
AllocateBuffer(0);
_decryptedLength = 0;
return;
}
_encryptedBuffer = SafeBSTRHandle.Allocate(null, 0);
SafeBSTRHandle decryptedBuffer = SafeBSTRHandle.Allocate(null, (uint)length);
_decryptedLength = length;
byte *bufferPtr = null;
try
{
decryptedBuffer.AcquirePointer(ref bufferPtr);
Buffer.MemoryCopy((byte *)value, bufferPtr, decryptedBuffer.Length * sizeof(char), length * sizeof(char));
}
finally
{
if (bufferPtr != null)
{
decryptedBuffer.ReleasePointer();
}
}
ProtectMemory(decryptedBuffer);
}
internal static unsafe bool CryptProtectData(SafeBSTRHandle uncryptedBuffer, out SafeBSTRHandle cryptedBuffer)
{
byte* uncryptedBufferPtr = null;
DATA_BLOB pDataOut = default(DATA_BLOB);
try
{
uncryptedBuffer.AcquirePointer(ref uncryptedBufferPtr);
DATA_BLOB pDataIn = new DATA_BLOB((IntPtr)uncryptedBufferPtr, uncryptedBuffer.Length * 2);
if (CryptProtectData(new IntPtr(&pDataIn), String.Empty, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, CRYPTPROTECTMEMORY_SAME_PROCESS, new IntPtr(&pDataOut)))
{
SafeBSTRHandle newHandle = SafeBSTRHandle.Allocate(pDataOut.pbData, pDataOut.cbData);
cryptedBuffer = newHandle;
return true;
}
else
{
cryptedBuffer = SafeBSTRHandle.Allocate(null, 0);
return false;
}
}
finally
{
if (uncryptedBufferPtr != null)
uncryptedBuffer.ReleasePointer();
if (pDataOut.pbData != IntPtr.Zero)
{
NtDll.ZeroMemory(pDataOut.pbData, (UIntPtr)pDataOut.cbData);
Marshal.FreeHGlobal(pDataOut.pbData);
}
}
}
internal unsafe static void Copy(SafeBSTRHandle source, SafeBSTRHandle target, uint bytesToCopy)
{
if (bytesToCopy == 0)
{
return;
}
byte *sourcePtr = null, targetPtr = null;
try
{
source.AcquirePointer(ref sourcePtr);
target.AcquirePointer(ref targetPtr);
Debug.Assert(Interop.OleAut32.SysStringLen((IntPtr)sourcePtr) * sizeof(char) >= bytesToCopy, "Source buffer is too small.");
Buffer.MemoryCopy(sourcePtr, targetPtr, Interop.OleAut32.SysStringLen((IntPtr)targetPtr) * sizeof(char), bytesToCopy);
}
finally
{
if (sourcePtr != null)
{
source.ReleasePointer();
}
if (targetPtr != null)
{
target.ReleasePointer();
}
}
}
internal static unsafe void Copy(SafeBSTRHandle source, SafeBSTRHandle target, uint bytesToCopy)
{
if (bytesToCopy == 0)
{
return;
}
byte *sourcePtr = null, targetPtr = null;
try
{
source.AcquirePointer(ref sourcePtr);
target.AcquirePointer(ref targetPtr);
Debug.Assert(source.ByteLength >= bytesToCopy, "Source buffer is too small.");
Buffer.MemoryCopy(sourcePtr, targetPtr, target.ByteLength, bytesToCopy);
}
finally
{
if (targetPtr != null)
{
target.ReleasePointer();
}
if (sourcePtr != null)
{
source.ReleasePointer();
}
}
}
internal static SafeBSTRHandle Allocate(IntPtr src, uint lenInBytes)
{
SafeBSTRHandle bstr = Interop.OleAut32.SysAllocStringLen(src, lenInBytes / sizeof(char));
bstr.Initialize(lenInBytes);
return(bstr);
}
private void AllocateBuffer(int size) {
uint alignedSize = GetAlignedSize(size);
m_buffer = SafeBSTRHandle.Allocate(null, alignedSize);
if (m_buffer.IsInvalid) {
throw new OutOfMemoryException();
}
}
internal static SafeBSTRHandle Allocate(string src, uint len)
{
SafeBSTRHandle safeBstrHandle = SafeBSTRHandle.SysAllocStringLen(src, len);
long num = (long)(len * 2U);
safeBstrHandle.Initialize((ulong)num);
return(safeBstrHandle);
}
public void Dispose()
{
if ((this.m_buffer != null) && !this.m_buffer.IsInvalid)
{
this.m_buffer.Close();
this.m_buffer = null;
}
}
private void AllocateBuffer(int size)
{
this.m_buffer = SafeBSTRHandle.Allocate((string)null, SecureString.GetAlignedSize(size));
if (this.m_buffer.IsInvalid)
{
throw new OutOfMemoryException();
}
}
[System.Security.SecurityCritical] // auto-generated
private void AllocateBuffer(uint size)
{
_encryptedBuffer = SafeBSTRHandle.Allocate(null, size);
if (_encryptedBuffer.IsInvalid)
{
throw new OutOfMemoryException();
}
}
public void Dispose()
{
if (m_buffer != null && !m_buffer.IsInvalid)
{
m_buffer.Close();
m_buffer = null;
}
}
public void Dispose()
{
if (this.m_buffer == null || this.m_buffer.IsInvalid)
{
return;
}
this.m_buffer.Close();
this.m_buffer = (SafeBSTRHandle)null;
}
private void AllocateBuffer(int size)
{
uint alignedSize = GetAlignedSize(size);
this.m_buffer = SafeBSTRHandle.Allocate(null, alignedSize);
if (this.m_buffer.IsInvalid)
{
throw new OutOfMemoryException();
}
}
[System.Security.SecuritySafeCritical] // auto-generated
public void Dispose()
{
lock (_methodLock)
{
if (_encryptedBuffer != null && !_encryptedBuffer.IsInvalid)
{
_encryptedBuffer.Dispose();
_encryptedBuffer = null;
}
}
}
internal static SafeBSTRHandle Allocate(string src, uint lenInChars)
{
SafeBSTRHandle bstr = Interop.OleAut32.SysAllocStringLen(src, lenInChars);
if (bstr.IsInvalid) // SysAllocStringLen returns a NULL ptr when there's insufficient memory
{
throw new OutOfMemoryException();
}
bstr.Initialize(lenInChars * sizeof(char));
return(bstr);
}
internal static SafeBSTRHandle Allocate(IntPtr src, uint lenInBytes)
{
Debug.Assert(lenInBytes % sizeof(char) == 0);
SafeBSTRHandle bstr = Interop.OleAut32.SysAllocStringLen(src, lenInBytes / sizeof(char));
if (bstr.IsInvalid) // SysAllocStringLen returns a NULL ptr when there's insufficient memory
{
throw new OutOfMemoryException();
}
bstr.Initialize(lenInBytes);
return(bstr);
}
internal SecureString(SecureString str)
{
Debug.Assert(str != null, "Expected non-null SecureString");
Debug.Assert(str._buffer != null, "Expected other SecureString's buffer to be non-null");
Debug.Assert(str._encrypted, "Expected to be used only on encrypted SecureStrings");
AllocateBuffer(str._buffer.Length);
SafeBSTRHandle.Copy(str._buffer, _buffer, str._buffer.Length * sizeof(char));
_decryptedLength = str._decryptedLength;
_encrypted = str._encrypted;
}
private static bool EncryptionSupported()
{
bool flag = true;
try
{
Win32Native.SystemFunction041(SafeBSTRHandle.Allocate(null, 0x10), 0x10, 0);
}
catch (EntryPointNotFoundException)
{
flag = false;
}
return(flag);
}
private static bool EncryptionSupported()
{
bool flag = true;
try
{
Win32Native.SystemFunction041(SafeBSTRHandle.Allocate((string)null, 16U), 16U, 0U);
}
catch (EntryPointNotFoundException ex)
{
flag = false;
}
return(flag);
}
[System.Security.SecurityCritical] // auto-generated
unsafe static bool EncryptionSupported() {
// check if the enrypt/decrypt function is supported on current OS
bool supported = true;
try {
Win32Native.SystemFunction041(
SafeBSTRHandle.Allocate(null , (int)Win32Native.CRYPTPROTECTMEMORY_BLOCK_SIZE),
Win32Native.CRYPTPROTECTMEMORY_BLOCK_SIZE,
Win32Native.CRYPTPROTECTMEMORY_SAME_PROCESS);
}
catch (EntryPointNotFoundException) {
supported = false;
}
return supported;
}
[System.Security.SecuritySafeCritical] // auto-generated
private void SetAtCore(int index, char c)
{
SafeBSTRHandle decryptedBuffer = null;
try
{
decryptedBuffer = UnProtectMemory();
decryptedBuffer.Write <char>((uint)index * sizeof(char), c);
}
finally
{
ProtectMemory(decryptedBuffer);
}
}
private static bool EncryptionSupported()
{
bool result = true;
try
{
Win32Native.SystemFunction041(SafeBSTRHandle.Allocate(null, 16U), 16U, 0U);
}
catch (EntryPointNotFoundException)
{
result = false;
}
return(result);
}
[System.Security.SecuritySafeCritical] // auto-generated
private void AppendCharCore(char c)
{
SafeBSTRHandle decryptedBuffer = null;
try
{
decryptedBuffer = UnProtectMemory();
EnsureCapacity(ref decryptedBuffer, _decryptedLength + 1);
decryptedBuffer.Write <char>((uint)_decryptedLength * sizeof(char), c);
_decryptedLength++;
}
finally
{
ProtectMemory(decryptedBuffer);
}
}
[System.Security.SecurityCritical] // auto-generated
internal unsafe IntPtr ToUniStr()
{
lock (_methodLock)
{
EnsureNotDisposed();
int length = _decryptedLength;
IntPtr ptr = IntPtr.Zero;
IntPtr result = IntPtr.Zero;
byte * bufferPtr = null;
SafeBSTRHandle decryptedBuffer = null;
try
{
ptr = Marshal.AllocCoTaskMem((length + 1) * 2);
if (ptr == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
decryptedBuffer = UnProtectMemory();
decryptedBuffer.AcquirePointer(ref bufferPtr);
Buffer.MemoryCopy(bufferPtr, (byte *)ptr.ToPointer(), ((length + 1) * 2), length * 2);
char *endptr = (char *)ptr.ToPointer();
*(endptr + length) = '\0';
result = ptr;
}
finally
{
if (result == IntPtr.Zero)
{
// If we failed for any reason, free the new buffer
if (ptr != IntPtr.Zero)
{
Interop.NtDll.ZeroMemory(ptr, (UIntPtr)(length * 2));
Marshal.FreeCoTaskMem(ptr);
}
}
if (bufferPtr != null)
{
decryptedBuffer.ReleasePointer();
}
}
return(result);
}
}
internal unsafe static void Copy(SafeBSTRHandle source, SafeBSTRHandle target, uint bytesToCopy)
{
if (bytesToCopy == 0)
return;
byte* sourcePtr = null, targetPtr = null;
try
{
source.AcquirePointer(ref sourcePtr);
target.AcquirePointer(ref targetPtr);
Debug.Assert(Interop.OleAut32.SysStringLen((IntPtr)sourcePtr) * sizeof(char) >= bytesToCopy, "Source buffer is too small.");
Buffer.MemoryCopy(sourcePtr, targetPtr, Interop.OleAut32.SysStringLen((IntPtr)targetPtr) * sizeof(char), bytesToCopy);
}
finally
{
if (sourcePtr != null)
source.ReleasePointer();
if (targetPtr != null)
target.ReleasePointer();
}
}
internal static unsafe void Copy(SafeBSTRHandle source, SafeBSTRHandle target)
{
byte* pointer = null;
byte* numPtr2 = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
source.AcquirePointer(ref pointer);
target.AcquirePointer(ref numPtr2);
Buffer.memcpyimpl(pointer, numPtr2, Win32Native.SysStringLen((IntPtr) pointer) * 2);
}
finally
{
if (pointer != null)
{
source.ReleasePointer();
}
if (numPtr2 != null)
{
target.ReleasePointer();
}
}
}
private void EnsureCapacity(int capacity)
{
if (capacity > MaxLength)
{
throw new ArgumentOutOfRangeException(nameof(capacity), SR.ArgumentOutOfRange_Capacity);
}
if (((uint)capacity * sizeof(char)) <= _buffer.ByteLength)
{
return;
}
var oldBuffer = _buffer;
SafeBSTRHandle newBuffer = SafeBSTRHandle.Allocate(GetAlignedSize((uint)capacity));
SafeBSTRHandle.Copy(oldBuffer, newBuffer, (uint)_decryptedLength * sizeof(char));
_buffer = newBuffer;
oldBuffer.Dispose();
}
internal unsafe static void Copy(SafeBSTRHandle source, SafeBSTRHandle target) {
byte* sourcePtr = null, targetPtr = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
source.AcquirePointer(ref sourcePtr);
target.AcquirePointer(ref targetPtr);
Contract.Assert(Win32Native.SysStringLen((IntPtr)targetPtr) >= Win32Native.SysStringLen((IntPtr)sourcePtr), "Target buffer is not large enough!");
Buffer.Memcpy(targetPtr, sourcePtr, (int) Win32Native.SysStringLen((IntPtr)sourcePtr) * 2);
}
finally
{
if (sourcePtr != null)
source.ReleasePointer();
if (targetPtr != null)
target.ReleasePointer();
}
}
internal static extern bool CryptUnprotectMemory(SafeBSTRHandle pData, uint cbData, uint dwFlags);
[System.Security.SecurityCritical] // auto-generated
private void AllocateBuffer(uint size)
{
_encryptedBuffer = SafeBSTRHandle.Allocate(null, size);
}
internal static extern uint SysStringLen(SafeBSTRHandle bstr);
[System.Security.SecurityCritical] // auto-generated
private void EnsureCapacity(ref SafeBSTRHandle decryptedBuffer, int capacity)
{
if (capacity > MaxLength)
{
throw new ArgumentOutOfRangeException("capacity", SR.ArgumentOutOfRange_Capacity);
}
if (capacity <= _decryptedLength)
{
return;
}
SafeBSTRHandle newBuffer = SafeBSTRHandle.Allocate(null, (uint)capacity);
SafeBSTRHandle.Copy(decryptedBuffer, newBuffer, (uint)_decryptedLength * sizeof(char));
decryptedBuffer.Dispose();
decryptedBuffer = newBuffer;
}
[System.Security.SecurityCritical] // auto-generated
private void ProtectMemory(SafeBSTRHandle decryptedBuffer)
{
Debug.Assert(!decryptedBuffer.IsInvalid, "Invalid buffer!");
if (_decryptedLength == 0)
{
return;
}
try
{
SafeBSTRHandle newEncryptedBuffer = null;
if (Interop.Crypt32.CryptProtectData(decryptedBuffer, out newEncryptedBuffer))
{
_encryptedBuffer.Dispose();
_encryptedBuffer = newEncryptedBuffer;
}
else
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
}
finally
{
decryptedBuffer.ClearBuffer();
decryptedBuffer.Dispose();
}
}
private void AllocateBuffer(uint size)
{
_buffer = SafeBSTRHandle.Allocate(GetAlignedSize(size));
}
internal static extern void ZeroMemory(SafeBSTRHandle address, uint length);
public void Dispose() {
if(m_buffer != null && !m_buffer.IsInvalid) {
m_buffer.Close();
m_buffer = null;
}
}
private void EnsureCapacity(int capacity)
{
if (capacity > 0x10000)
{
throw new ArgumentOutOfRangeException("capacity", Environment.GetResourceString("ArgumentOutOfRange_Capacity"));
}
if (capacity > this.m_buffer.Length)
{
SafeBSTRHandle target = SafeBSTRHandle.Allocate(null, GetAlignedSize(capacity));
if (target.IsInvalid)
{
throw new OutOfMemoryException();
}
SafeBSTRHandle.Copy(this.m_buffer, target);
this.m_buffer.Close();
this.m_buffer = target;
}
}
[System.Security.SecurityCritical] // auto-generated
private void EnsureCapacity(int capacity) {
if( capacity > MaxLength) {
throw new ArgumentOutOfRangeException("capacity", Environment.GetResourceString("ArgumentOutOfRange_Capacity"));
}
Contract.EndContractBlock();
if( capacity <= m_buffer.Length) {
return;
}
SafeBSTRHandle newBuffer = SafeBSTRHandle.Allocate(null, GetAlignedSize(capacity));
if (newBuffer.IsInvalid) {
throw new OutOfMemoryException();
}
SafeBSTRHandle.Copy(m_buffer, newBuffer);
m_buffer.Close();
m_buffer = newBuffer;
}
public void Dispose()
{
if ((this.m_buffer != null) && !this.m_buffer.IsInvalid)
{
this.m_buffer.Close();
this.m_buffer = null;
}
}
