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