public static unsafe void BCryptHashData(this SafeHashHandle hHash, byte *pbInput, int cbInput)
{
NTSTATUS ntStatus = Interop.BCryptHashData(hHash, pbInput, cbInput, 0);
if (ntStatus != NTSTATUS.STATUS_SUCCESS)
{
throw CreateCryptographicException(ntStatus);
}
return;
}
public static SafeHashHandle BCryptCreateHash(this SafeAlgorithmHandle hAlgorithm, byte[] pbSecret, int dwFlags)
{
SafeHashHandle hHash = null;
NTSTATUS ntStatus = Interop.BCryptCreateHash(hAlgorithm, out hHash, IntPtr.Zero, 0, pbSecret, pbSecret == null ? 0 : pbSecret.Length, dwFlags);
if (ntStatus != NTSTATUS.STATUS_SUCCESS)
{
throw CreateCryptographicException(ntStatus);
}
return(hHash);
}
public static byte[] BCryptFinishHash(this SafeHashHandle hHash, int cbHashSize)
{
byte[] hash = new byte[cbHashSize];
NTSTATUS ntStatus = Interop.BCryptFinishHash(hHash, hash, cbHashSize, 0);
if (ntStatus != NTSTATUS.STATUS_SUCCESS)
{
throw CreateCryptographicException(ntStatus);
}
return(hash);
}
public static int GetHashSizeInBytes(this SafeHashHandle hHash)
{
unsafe
{
int cbSizeOfHashSize;
int hashSize;
NTSTATUS ntStatus = Interop.BCryptGetProperty(hHash, BCryptGetPropertyStrings.BCRYPT_HASH_LENGTH, (byte *)&hashSize, 4, out cbSizeOfHashSize, 0);
if (ntStatus != NTSTATUS.STATUS_SUCCESS)
{
throw CreateCryptographicException(ntStatus);
}
return(hashSize);
}
}
public static SafeHashHandle BCryptTryCreateReusableHash(this SafeAlgorithmHandle hAlgorithm, byte[] pbSecret)
{
const int BCRYPT_HASH_REUSABLE_FLAG = 0x00000020;
SafeHashHandle hHash = null;
NTSTATUS ntStatus = Interop.BCryptCreateHash(hAlgorithm, out hHash, IntPtr.Zero, 0, pbSecret, pbSecret == null ? 0 : pbSecret.Length, BCRYPT_HASH_REUSABLE_FLAG);
if (ntStatus == NTSTATUS.STATUS_INVALID_PARAMETER)
{
return(null); // Pre-Win8 OS's do not support BCRYPT_HASH_REUSABLE_FLAG.
}
if (ntStatus != NTSTATUS.STATUS_SUCCESS)
{
throw CreateCryptographicException(ntStatus);
}
return(hHash);
}
public static extern NTSTATUS BCryptFinishHash(SafeHashHandle hHash, [Out] byte[] pbOutput, int cbOutput, int dwFlags);
public static extern unsafe NTSTATUS BCryptHashData(SafeHashHandle hHash, byte *pbInput, int cbInput, int dwFlags);
public static extern NTSTATUS BCryptCreateHash(SafeAlgorithmHandle hAlgorithm, out SafeHashHandle phHash, IntPtr pbHashObject, int cbHashObject, [In, Out] byte[] pbSecret, int cbSecret, int dwFlags);
