14e2277962
while others dislike them being extra commits, let's clean them up once and for all for the existing code. If it's ugly, let it only be ugly once :-) Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5507 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
36 lines
778 B
C++
36 lines
778 B
C++
// Common/CRC.h
|
|
|
|
#ifndef __COMMON_CRC_H
|
|
#define __COMMON_CRC_H
|
|
|
|
#include <stddef.h>
|
|
#include "Types.h"
|
|
|
|
class CCRC
|
|
{
|
|
UInt32 _value;
|
|
public:
|
|
static UInt32 Table[256];
|
|
static void InitTable();
|
|
|
|
CCRC(): _value(0xFFFFFFFF){};
|
|
void Init() { _value = 0xFFFFFFFF; }
|
|
void UpdateByte(Byte v);
|
|
void UpdateUInt16(UInt16 v);
|
|
void UpdateUInt32(UInt32 v);
|
|
void UpdateUInt64(UInt64 v);
|
|
void Update(const void *data, size_t size);
|
|
UInt32 GetDigest() const { return _value ^ 0xFFFFFFFF; }
|
|
static UInt32 CalculateDigest(const void *data, size_t size)
|
|
{
|
|
CCRC crc;
|
|
crc.Update(data, size);
|
|
return crc.GetDigest();
|
|
}
|
|
static bool VerifyDigest(UInt32 digest, const void *data, size_t size)
|
|
{
|
|
return (CalculateDigest(data, size) == digest);
|
|
}
|
|
};
|
|
|
|
#endif
|