diff options
Diffstat (limited to 'src/Common/Endian.c')
rwrr  src/Common/Endian.c  118 
1 files changed, 59 insertions, 59 deletions
diff git a/src/Common/Endian.c b/src/Common/Endian.c index 9cf16cce..44d96e40 100644  a/src/Common/Endian.c +++ b/src/Common/Endian.c @@ 1,59 +1,59 @@ /*
 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) 20032012 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) 19982000 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) 20132016 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);
 }
}
+/* + 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) 20032012 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) 19982000 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) 20132016 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); + } +} 