* wording fixes (cherry picked from apt--mvo)

[apt.git] / apt-pkg / contrib / md5.h

diff --git a/apt-pkg/contrib/md5.h b/apt-pkg/contrib/md5.h
index 43bad010a22ee267401857114dec2643c4d05f63..e280d714e8ad8302ea6214421bc23514776db6eb 100644 (file)
--- a/apt-pkg/contrib/md5.h
+++ b/apt-pkg/contrib/md5.h
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: md5.h,v 1.1 1998/10/31 05:19:59 jgg Exp $
+// $Id: md5.h,v 1.6 2001/05/07 05:06:52 jgg Exp $
 /* ######################################################################
    
    MD5SumValue - Storage for a MD5Sum
@@ -11,6 +11,8 @@
    
    A MD5Sum is used to generate a (hopefully) unique 16 byte number for a
    block of data. This can be used to gaurd against corruption of a file.
+   MD5 should not be used for tamper protection, use SHA or something more
+   secure.
    
    There are two classes because computing a MD5 is not a continual 
    operation unless 64 byte blocks are used. Also the summation requires an
@@ -26,12 +28,17 @@
 #endif 
 
 #include <string>
+#include <algorithm>
+#include <stdint.h>
+
+using std::string;
+using std::min;
 
 class MD5Summation;
 
 class MD5SumValue
 {
-   friend MD5Summation;
+   friend class MD5Summation;
    unsigned char Sum[4*4];
    
    public:
@@ -39,16 +46,20 @@ class MD5SumValue
    // Accessors
    bool operator ==(const MD5SumValue &rhs) const; 
    string Value() const;
-   inline operator string() const {return Value();}; 
+   inline void Value(unsigned char S[16]) 
+         {for (int I = 0; I != sizeof(Sum); I++) S[I] = Sum[I];};
+   inline operator string() const {return Value();};
    bool Set(string Str);
-   
+   inline void Set(unsigned char S[16]) 
+         {for (int I = 0; I != sizeof(Sum); I++) Sum[I] = S[I];};
+
    MD5SumValue(string Str);
    MD5SumValue();
 };
 
 class MD5Summation
 {
-   unsigned char Buf[4*4];
+   uint32_t Buf[4];
    unsigned char Bytes[2*4];
    unsigned char In[16*4];
    bool Done;
@@ -56,6 +67,7 @@ class MD5Summation
    public:
 
    bool Add(const unsigned char *Data,unsigned long Size);
+   inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
    bool AddFD(int Fd,unsigned long Size);
    inline bool Add(const unsigned char *Beg,const unsigned char *End) 
                   {return Add(Beg,End-Beg);};