add sha512 interface based on sha2 by aaron gifford

1 files changed, 68 insertions, 0 deletions

diff --git a/apt-pkg/contrib/sha512.h b/apt-pkg/contrib/sha512.h
new file mode 100644
index 000000000..960ff1f46
--- /dev/null
+++ b/apt-pkg/contrib/sha512.h
@@ -0,0 +1,68 @@
+// -*- mode: cpp; mode: fold -*-
+// Description                                                          /*{{{*/
+// $Id: sha512.h,v 1.3 2001/05/07 05:05:47 jgg Exp $
+/* ######################################################################
+
+   SHA512SumValue - Storage for a SHA-512 hash.
+   SHA512Summation - SHA-512 Secure Hash Algorithm.
+   
+   This is a C++ interface to a set of SHA512Sum functions, that mirrors
+   the equivalent MD5 & SHA1 classes. 
+
+   ##################################################################### */
+                                                                        /*}}}*/
+#ifndef APTPKG_SHA512_H
+#define APTPKG_SHA512_H
+
+#include <string>
+#include <cstring>
+#include <algorithm>
+#include <stdint.h>
+
+#include "sha2.h"
+
+using std::string;
+using std::min;
+
+class SHA512Summation;
+
+class SHA512SumValue
+{
+   friend class SHA512Summation;
+   unsigned char Sum[64];
+   
+   public:
+
+   // Accessors
+   bool operator ==(const SHA512SumValue &rhs) const; 
+   string Value() const;
+   inline void Value(unsigned char S[64])
+         {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[64]) 
+         {for (int I = 0; I != sizeof(Sum); I++) Sum[I] = S[I];};
+
+   SHA512SumValue(string Str);
+   SHA512SumValue();
+};
+
+class SHA512Summation
+{
+   SHA512_CTX ctx;
+   unsigned char Sum[64];
+   bool Done;
+
+   public:
+
+   bool Add(const unsigned char *inbuf,unsigned long inlen);
+   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);};
+   SHA512SumValue Result();
+   
+   SHA512Summation();
+};
+
+#endif