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File indexing completed on 2025-01-18 10:12:16
0001 // @(#)root/base:$Id$ 0002 // Author: Fons Rademakers 29/9/2001 0003 0004 /************************************************************************* 0005 * Copyright (C) 1995-2001, Rene Brun and Fons Rademakers. * 0006 * All rights reserved. * 0007 * * 0008 * For the licensing terms see $ROOTSYS/LICENSE. * 0009 * For the list of contributors see $ROOTSYS/README/CREDITS. * 0010 *************************************************************************/ 0011 0012 #ifndef ROOT_TMD5 0013 #define ROOT_TMD5 0014 0015 ////////////////////////////////////////////////////////////////////////// 0016 // // 0017 // TMD5 // 0018 // // 0019 // This code implements the MD5 message-digest algorithm. // 0020 // The algorithm is due to Ron Rivest. This code was // 0021 // written by Colin Plumb in 1993, no copyright is claimed. // 0022 // This code is in the public domain; do with it what you wish. // 0023 // // 0024 // Equivalent code is available from RSA Data Security, Inc. // 0025 // This code has been tested against that, and is equivalent, // 0026 // except that you don't need to include two pages of legalese // 0027 // with every copy. // 0028 // // 0029 // To compute the message digest of a chunk of bytes, create an // 0030 // TMD5 object, call Update() as needed on buffers full of bytes, and // 0031 // then call Final(), which will, optionally, fill a supplied 16-byte // 0032 // array with the digest. // 0033 // // 0034 ////////////////////////////////////////////////////////////////////////// 0035 0036 #include "Rtypes.h" 0037 0038 // forward declaration 0039 class TBuffer; 0040 class TMD5; 0041 Bool_t operator==(const TMD5 &m1, const TMD5 &m2); 0042 0043 0044 class TMD5 { 0045 0046 friend Bool_t operator==(const TMD5 &m1, const TMD5 &m2); 0047 0048 private: 0049 UInt_t fBuf[4]; //!temp buffer 0050 UInt_t fBits[2]; //!temp buffer 0051 UChar_t fIn[64]; //!temp buffer 0052 mutable Char_t fString[33]; //!string representation of digest 0053 UChar_t fDigest[16]; //message digest 0054 Bool_t fFinalized; //true if message digest has been finalized 0055 0056 void Transform(UInt_t buf[4], const UChar_t in[64]); 0057 void Encode(UChar_t *out, const UInt_t *in, UInt_t len); 0058 void Decode(UInt_t *out, const UChar_t *in, UInt_t len); 0059 0060 public: 0061 TMD5(); 0062 TMD5(const UChar_t *digest); 0063 TMD5(const TMD5 &md5); 0064 virtual ~TMD5() { } 0065 0066 TMD5 &operator=(const TMD5 &rhs); 0067 0068 void Update(const UChar_t *buf, UInt_t len); 0069 void Final(); 0070 void Final(UChar_t digest[16]); 0071 void Print() const; 0072 const char *AsString() const; 0073 0074 Int_t SetDigest(const char *md5ascii); 0075 0076 static TMD5 *ReadChecksum(const char *file); 0077 static Int_t WriteChecksum(const char *file, const TMD5 *md5); 0078 0079 static TMD5 *FileChecksum(const char *file); 0080 static Int_t FileChecksum(const char *file, UChar_t digest[16]); 0081 0082 ClassDef(TMD5,1) // MD5 cryptographic hash functions with a 128 bit output 0083 }; 0084 0085 inline TBuffer &operator>>(TBuffer &buf, TMD5 &md5) 0086 { md5.Streamer(buf); return buf; } 0087 0088 // Not inlined in order to avoid const casted away warning in user code. 0089 TBuffer &operator<<(TBuffer &buf, const TMD5 &md5); 0090 0091 inline Bool_t operator!=(const TMD5 &m1, const TMD5 &m2) 0092 { return !(m1 == m2); } 0093 0094 0095 #endif
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