public static unsafe int EncryptDecryptHelper(SafeDeleteContext context, SecurityBuffer[] input, uint sequenceNumber, bool encrypt, bool isGssBlob)
{
SecurityBufferDescriptor sdcInOut = new SecurityBufferDescriptor(input.Length);
SecurityBufferStruct[] unmanagedBuffer = new SecurityBufferStruct[input.Length];
byte[][] buffers = new byte[input.Length][];
fixed(void *unmanagedBufferPtr = unmanagedBuffer)
{
sdcInOut.UnmanagedPointer = unmanagedBufferPtr;
GCHandle[] pinnedBuffers = new GCHandle[input.Length];
try
{
for (int i = 0; i < input.Length; ++i)
{
SecurityBuffer iBuffer = input[i];
unmanagedBuffer[i].count = iBuffer.size;
unmanagedBuffer[i].type = iBuffer.type;
if (iBuffer.token == null || iBuffer.token.Length == 0)
{
unmanagedBuffer[i].token = IntPtr.Zero;
}
else
{
pinnedBuffers[i] = GCHandle.Alloc(iBuffer.token, GCHandleType.Pinned);
unmanagedBuffer[i].token = Marshal.UnsafeAddrOfPinnedArrayElement(iBuffer.token, iBuffer.offset);
buffers[i] = iBuffer.token;
}
}
int errorCode;
if (encrypt)
{
errorCode = SafeDeleteContext.EncryptMessage(context, sdcInOut, sequenceNumber);
}
else
{
errorCode = SafeDeleteContext.DecryptMessage(context, sdcInOut, sequenceNumber);
}
// Marshalling back returned sizes (do not marshal the "token" field)
for (int i = 0; i < input.Length; ++i)
{
SecurityBuffer iBuffer = input[i];
iBuffer.size = unmanagedBuffer[i].count;
iBuffer.type = unmanagedBuffer[i].type;
if (iBuffer.size == 0)
{
iBuffer.offset = 0;
iBuffer.token = null;
}
else if (isGssBlob && !encrypt && iBuffer.type == BufferType.Data)
{
iBuffer.token = DiagnosticUtility.Utility.AllocateByteArray(iBuffer.size);
Marshal.Copy(unmanagedBuffer[i].token, iBuffer.token, 0, iBuffer.size);
}
else
{
checked
{
// Find the buffer this is inside of. Usually they all point inside buffer 0.
int j;
for (j = 0; j < input.Length; j++)
{
if (buffers[j] == null)
{
continue;
}
byte *bufferAddress = (byte *)Marshal.UnsafeAddrOfPinnedArrayElement(buffers[j], 0);
if ((byte *)unmanagedBuffer[i].token >= bufferAddress &&
(byte *)unmanagedBuffer[i].token + iBuffer.size <= bufferAddress + buffers[j].Length)
{
iBuffer.offset = (int)((byte *)unmanagedBuffer[i].token - bufferAddress);
iBuffer.token = buffers[j];
break;
}
}
if (j >= input.Length)
{
iBuffer.size = 0;
iBuffer.offset = 0;
iBuffer.token = null;
}
if (!(iBuffer.offset >= 0 && iBuffer.offset <= (iBuffer.token == null ? 0 : iBuffer.token.Length)))
{
DiagnosticUtility.DebugAssert(SR.GetString(SR.SspiWrapperEncryptDecryptAssert1, iBuffer.offset));
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SspiWrapperEncryptDecryptAssert1, iBuffer.offset)));
}
if (!(iBuffer.size >= 0 && iBuffer.size <= (iBuffer.token == null ? 0 : iBuffer.token.Length - iBuffer.offset)))
{
DiagnosticUtility.DebugAssert(SR.GetString(SR.SspiWrapperEncryptDecryptAssert2, iBuffer.size));
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SspiWrapperEncryptDecryptAssert2, iBuffer.size)));
}
}
}
}
return(errorCode);
}
finally
{
for (int i = 0; i < pinnedBuffers.Length; ++i)
{
if (pinnedBuffers[i].IsAllocated)
{
pinnedBuffers[i].Free();
}
}
}
}
}
public static unsafe int EncryptDecryptHelper(SafeDeleteContext context, SecurityBuffer[] input, uint sequenceNumber, bool encrypt, bool isGssBlob)
{
int num6;
SecurityBufferStruct[] structArray2;
SecurityBufferDescriptor inputOutput = new SecurityBufferDescriptor(input.Length);
SecurityBufferStruct[] structArray = new SecurityBufferStruct[input.Length];
byte[][] bufferArray = new byte[input.Length][];
if (((structArray2 = structArray) == null) || (structArray2.Length == 0))
{
fixed(IntPtr *ptrRef = null)
{
}
}
inputOutput.UnmanagedPointer = (void *)ptrRef;
GCHandle[] handleArray = new GCHandle[input.Length];
try
{
int num2;
for (int i = 0; i < input.Length; i++)
{
SecurityBuffer buffer = input[i];
structArray[i].count = buffer.size;
structArray[i].type = buffer.type;
if ((buffer.token == null) || (buffer.token.Length == 0))
{
structArray[i].token = IntPtr.Zero;
}
else
{
handleArray[i] = GCHandle.Alloc(buffer.token, GCHandleType.Pinned);
structArray[i].token = Marshal.UnsafeAddrOfPinnedArrayElement(buffer.token, buffer.offset);
bufferArray[i] = buffer.token;
}
}
if (encrypt)
{
num2 = SafeDeleteContext.EncryptMessage(context, inputOutput, sequenceNumber);
}
else
{
num2 = SafeDeleteContext.DecryptMessage(context, inputOutput, sequenceNumber);
}
for (int j = 0; j < input.Length; j++)
{
SecurityBuffer buffer2 = input[j];
buffer2.size = structArray[j].count;
buffer2.type = structArray[j].type;
if (buffer2.size == 0)
{
buffer2.offset = 0;
buffer2.token = null;
continue;
}
if ((isGssBlob && !encrypt) && (buffer2.type == BufferType.Data))
{
buffer2.token = DiagnosticUtility.Utility.AllocateByteArray(buffer2.size);
Marshal.Copy(structArray[j].token, buffer2.token, 0, buffer2.size);
continue;
}
int index = 0;
while (index < input.Length)
{
if (bufferArray[index] != null)
{
byte *numPtr = (byte *)Marshal.UnsafeAddrOfPinnedArrayElement(bufferArray[index], 0);
if ((((void *)structArray[j].token) >= numPtr) && ((((void *)structArray[j].token) + buffer2.size) <= (numPtr + bufferArray[index].Length)))
{
buffer2.offset = (int)((long)((((void *)structArray[j].token) - numPtr) / 1));
buffer2.token = bufferArray[index];
break;
}
}
index++;
}
if (index >= input.Length)
{
buffer2.size = 0;
buffer2.offset = 0;
buffer2.token = null;
}
if ((buffer2.offset < 0) || (buffer2.offset > ((buffer2.token == null) ? 0 : buffer2.token.Length)))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(System.IdentityModel.SR.GetString("SspiWrapperEncryptDecryptAssert1", new object[] { buffer2.offset })));
}
if ((buffer2.size < 0) || (buffer2.size > ((buffer2.token == null) ? 0 : (buffer2.token.Length - buffer2.offset))))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(System.IdentityModel.SR.GetString("SspiWrapperEncryptDecryptAssert2", new object[] { buffer2.size })));
}
}
num6 = num2;
}
finally
{
for (int k = 0; k < handleArray.Length; k++)
{
if (handleArray[k].IsAllocated)
{
handleArray[k].Free();
}
}
}
return(num6);
}