/*
Legal Notice: Some portions of the source code contained in this file were
derived from the source code of TrueCrypt 7.1a, which is
Copyright (c) 2003-2012 TrueCrypt Developers Association and which is
governed by the TrueCrypt License 3.0, also from the source code of
Encryption for the Masses 2.02a, which is Copyright (c) 1998-2000 Paul Le Roux
and which is governed by the 'License Agreement for Encryption for the Masses'
Modifications and additions to the original source code (contained in this file)
and all other portions of this file are Copyright (c) 2013-2016 IDRIX
and are governed by the Apache License 2.0 the full text of which is
contained in the file License.txt included in VeraCrypt binary and source
code distribution packages. */
#include "Tcdefs.h"
#include "Common/Endian.h"
unsigned __int16 MirrorBytes16 (unsigned __int16 x)
{
return (x << 8) | (x >> 8);
}
unsigned __int32 MirrorBytes32 (unsigned __int32 x)
{
unsigned __int32 n = (unsigned __int8) x;
n <<= 8; n |= (unsigned __int8) (x >> 8);
n <<= 8; n |= (unsigned __int8) (x >> 16);
return (n << 8) | (unsigned __int8) (x >> 24);
}
#ifndef TC_NO_COMPILER_INT64
uint64 MirrorBytes64 (uint64 x)
{
uint64 n = (unsigned __int8) x;
n <<= 8; n |= (unsigned __int8) (x >> 8);
n <<= 8; n |= (unsigned __int8) (x >> 16);
n <<= 8; n |= (unsigned __int8) (x >> 24);
n <<= 8; n |= (unsigned __int8) (x >> 32);
n <<= 8; n |= (unsigned __int8) (x >> 40);
n <<= 8; n |= (unsigned __int8) (x >> 48);
return (n << 8) | (unsigned __int8) (x >> 56);
}
#endif
void
LongReverse (unsigned __int32 *buffer, unsigned byteCount)
{
unsigned __int32 value;
byteCount /= sizeof (unsigned __int32);
while (byteCount--)
{
value = *buffer;
value = ((value & 0xFF00FF00L) >> 8) | \
((value & 0x00FF00FFL) << 8);
*buffer++ = (value << 16) | (value >> 16);
}
}