update release date to actual daterelease-qpdf-2.0

git-svn-id: svn+q:///qpdf/trunk@599 71b93d88-0707-0410-a8cf-f5a4172ac649

1 files changed, 73 insertions, 0 deletions

diff --git a/libqpdf/qpdf/MD5.hh b/libqpdf/qpdf/MD5.hh
new file mode 100644
index 00000000..0ae15da9
--- /dev/null
+++ b/libqpdf/qpdf/MD5.hh
@@ -0,0 +1,73 @@
+
+#ifndef __MD5_HH__
+#define __MD5_HH__
+
+#include <string>
+#include <qpdf/QEXC.hh>
+
+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)
+	throw(QEXC::System);
+
+    // 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 hexademical 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 unsigned short int UINT2;
+
+    // UINT4 defines a four byte word
+    typedef unsigned long int 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__