public static int VerifySignature(ref SecurityHandle context, int QOP, SecurityBufferClass[] input, int sequenceNumber)
{
GCHandle[] gcHandles = SSPIWrapper.PinBuffers(input);
int result;
try
{
SecurityBufferDescriptor securityBufferDescriptor = new SecurityBufferDescriptor(input);
try
{
int num = UnsafeNclNativeMethods.NativeNTSSPI.VerifySignature(ref context, ref securityBufferDescriptor, sequenceNumber, QOP);
SecurityBufferClass[] array = securityBufferDescriptor.marshall();
for (int i = 0; i < input.Length; i++)
{
input[i] = array[i];
}
result = num;
}
finally
{
securityBufferDescriptor.FreeAllBuffers(0);
}
}
finally
{
SSPIWrapper.FreeGCHandles(gcHandles);
}
return(result);
}
public static int DecryptMessage(ref SecurityHandle context, SecurityBufferClass[] input, int sequenceNumber)
{
int num = 0;
GCHandle[] gcHandles = SSPIWrapper.PinBuffers(input);
int result;
try
{
SecurityBufferDescriptor securityBufferDescriptor = new SecurityBufferDescriptor(input);
try
{
int num2 = UnsafeNclNativeMethods.NativeNTSSPI.DecryptMessage(ref context, ref securityBufferDescriptor, sequenceNumber, ref num);
if (num2 == 0)
{
SecurityBufferClass[] array = securityBufferDescriptor.marshall();
for (int i = 0; i < input.Length; i++)
{
input[i] = array[i];
}
}
result = num2;
}
finally
{
securityBufferDescriptor.FreeAllBuffers(0);
}
}
finally
{
SSPIWrapper.FreeGCHandles(gcHandles);
}
return(result);
}
private static int InitializeSecurityContext(ref SecurityHandle credential, ref SecurityHandle context, string targetName, int requirements, Endianness datarep, SecurityBufferClass[] inputBuffers, ref SecurityHandle newContext, SecurityBufferClass[] outputBuffers, ref int attributes, ref long timestamp)
{
GCHandle[] array = null;
GCHandle[] array2 = null;
int num = 0;
try
{
if (outputBuffers != null)
{
array = SSPIWrapper.PinBuffers(outputBuffers);
}
SecurityBufferDescriptor securityBufferDescriptor = new SecurityBufferDescriptor(outputBuffers);
try
{
if (inputBuffers == null)
{
num = UnsafeNclNativeMethods.NativeNTSSPI.InitializeSecurityContextW(ref credential, IntPtr.Zero, targetName, requirements, 0, (int)datarep, IntPtr.Zero, 0, ref newContext, ref securityBufferDescriptor, ref attributes, ref timestamp);
}
else
{
array2 = SSPIWrapper.PinBuffers(inputBuffers);
SecurityBufferDescriptor securityBufferDescriptor2 = new SecurityBufferDescriptor(inputBuffers);
try
{
num = UnsafeNclNativeMethods.NativeNTSSPI.InitializeSecurityContextW(ref credential, ref context, targetName, requirements, 0, (int)datarep, ref securityBufferDescriptor2, 0, ref newContext, ref securityBufferDescriptor, ref attributes, ref timestamp);
}
finally
{
securityBufferDescriptor2.FreeAllBuffers(0);
}
}
if (num == 0 || num == 590610)
{
SecurityBufferClass[] array3 = securityBufferDescriptor.marshall();
for (int i = 0; i < outputBuffers.Length; i++)
{
outputBuffers[i] = array3[i];
}
}
}
finally
{
securityBufferDescriptor.FreeAllBuffers(requirements);
}
}
finally
{
if (array != null)
{
SSPIWrapper.FreeGCHandles(array);
}
if (array2 != null)
{
SSPIWrapper.FreeGCHandles(array2);
}
}
return(num);
}