protected sealed override bool ReleaseHandle()
{
IntPtr localHandle = handle;
handle = IntPtr.Zero;
int status = MD5PInvokeHelper.BCryptDestroyHash(localHandle);
return(status == MD5PInvokeHelper.StatusSuccess);
}
protected sealed override bool ReleaseHandle()
{
IntPtr localHandle = handle;
handle = IntPtr.Zero;
int status = MD5PInvokeHelper.BCryptCloseAlgorithmProvider(localHandle, 0);
return(status == MD5PInvokeHelper.StatusSuccess);
}
internal static byte[] CalculateHash(byte[] inputBuffer)
{
byte[] hashResult;
int status;
SafeBCryptHashHandle hashHandle = null;
status = MD5PInvokeHelper.BCryptCreateHash(MD5PInvokeHelper.MD5AlgorithmProvider, out hashHandle, IntPtr.Zero, 0, null, 0, 0);
if (status != MD5PInvokeHelper.StatusSuccess)
{
DisposeMD5Handles();
throw new CryptographicException(status);
}
using (hashHandle)
{
int sizeOfHashSize;
int hashSize;
unsafe
{
status = MD5PInvokeHelper.BCryptGetProperty(hashHandle, MD5PInvokeHelper.BCryptHashLength, &hashSize, sizeof(int), out sizeOfHashSize, 0);
if (status != MD5PInvokeHelper.StatusSuccess)
{
DisposeMD5Handles();
throw new CryptographicException(status);
}
}
unsafe
{
fixed(byte *inputBytePointer = inputBuffer)
{
status = MD5PInvokeHelper.BCryptHashData(hashHandle, inputBytePointer, inputBuffer.Length, 0);
if (status != MD5PInvokeHelper.StatusSuccess)
{
DisposeMD5Handles();
throw new CryptographicException(status);
}
}
}
hashResult = new byte[hashSize];
status = MD5PInvokeHelper.BCryptFinishHash(hashHandle, hashResult, hashResult.Length, 0);
if (status != MD5PInvokeHelper.StatusSuccess)
{
DisposeMD5Handles();
throw new CryptographicException(status);
}
}
// hashHandle has been disposed by the end of the "using" block.
hashHandle = null;
return(hashResult);
}
