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#ifndef __MD5_HH__
#define __MD5_HH__
#include <string>
#include <qpdf/DLL.hh>
#include <qpdf/qpdf-config.h>
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
DLL_EXPORT
class MD5
{
public:
typedef unsigned char Digest[16];
MD5();
void reset();
// encodes string and finalizes
void encodeString(char const* input_string);
// encodes file and finalizes
void encodeFile(char const* filename, int up_to_size = -1);
// appends string to current md5 object
void appendString(char const* input_string);
// appends arbitrary data to current md5 object
void encodeDataIncrementally(char const* input_data, int len);
// computes a raw digest
void digest(Digest);
// prints the digest to stdout terminated with \r\n (primarily for
// testing)
void print();
// returns the digest as a hexadecimal string
std::string unparse();
// Convenience functions
static std::string getDataChecksum(char const* buf, int len);
static std::string getFileChecksum(char const* filename, int up_to_size = -1);
static bool checkDataChecksum(char const* const checksum,
char const* buf, int len);
static bool checkFileChecksum(char const* const checksum,
char const* filename, int up_to_size = -1);
private:
// POINTER defines a generic pointer type
typedef void *POINTER;
// UINT2 defines a two byte word
typedef uint16_t UINT2;
// UINT4 defines a four byte word
typedef uint32_t UINT4;
void init();
void update(unsigned char *, unsigned int);
void final();
static void transform(UINT4 [4], unsigned char [64]);
static void encode(unsigned char *, UINT4 *, unsigned int);
static void decode(UINT4 *, unsigned char *, unsigned int);
UINT4 state[4]; // state (ABCD)
UINT4 count[2]; // number of bits, modulo 2^64 (lsb first)
unsigned char buffer[64]; // input buffer
bool finalized;
Digest digest_val;
};
#endif // __MD5_HH__
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