src/llvm/include/llvm/Support/MD5.h

   1 /*
   2  * This code is derived from (original license follows):
   3  *
   4  * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
   5  * MD5 Message-Digest Algorithm (RFC 1321).
   6  *
   7  * Homepage:
   8  * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
   9  *
  10  * Author:
  11  * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
  12  *
  13  * This software was written by Alexander Peslyak in 2001.  No copyright is
  14  * claimed, and the software is hereby placed in the public domain.
  15  * In case this attempt to disclaim copyright and place the software in the
  16  * public domain is deemed null and void, then the software is
  17  * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
  18  * general public under the following terms:
  19  *
  20  * Redistribution and use in source and binary forms, with or without
  21  * modification, are permitted.
  22  *
  23  * There's ABSOLUTELY NO WARRANTY, express or implied.
  24  *
  25  * See md5.c for more information.
  26  */
  27
  28 #ifndef LLVM_SUPPORT_MD5_H
  29 #define LLVM_SUPPORT_MD5_H
  30
  31 #include "llvm/ADT/ArrayRef.h"
  32 #include "llvm/ADT/SmallString.h"
  33 #include "llvm/Support/DataTypes.h"
  34
  35 namespace llvm {
  36
  37 class MD5 {
  38   // Any 32-bit or wider unsigned integer data type will do.
  39   typedef uint32_t MD5_u32plus;
  40
  41   MD5_u32plus a, b, c, d;
  42   MD5_u32plus hi, lo;
  43   uint8_t buffer[64];
  44   MD5_u32plus block[16];
  45
  46 public:
  47   typedef uint8_t MD5Result[16];
  48
  49   MD5();
  50
  51   /// \brief Updates the hash for the byte stream provided.
  52   void update(ArrayRef<uint8_t> Data);
  53
  54   /// \brief Updates the hash for the StringRef provided.
  55   void update(StringRef Str);
  56
  57   /// \brief Finishes off the hash and puts the result in result.
  58   void final(MD5Result &Result);
  59
  60   /// \brief Translates the bytes in \p Res to a hex string that is
  61   /// deposited into \p Str. The result will be of length 32.
  62   static void stringifyResult(MD5Result &Result, SmallString<32> &Str);
  63
  64 private:
  65   const uint8_t *body(ArrayRef<uint8_t> Data);
  66 };
  67
  68 }
  69
  70 #endif