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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Crypto++: md5.cpp Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.3.2 --><div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Compound List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Compound Members</a> | <a class="qindex" href="globals.html">File Members</a></div><h1>md5.cpp</h1><div class="fragment"><pre>00001 <span class="comment">// md5.cpp - modified by Wei Dai from Colin Plumb's public domain md5.c</span>00002 <span class="comment">// any modifications are placed in the public domain</span>00003 00004 <span class="preprocessor">#include "pch.h"</span>00005 <span class="preprocessor">#include "md5.h"</span>00006 <span class="preprocessor">#include "misc.h"</span>00007 00008 NAMESPACE_BEGIN(CryptoPP)00009 00010 <span class="keywordtype">void</span> MD5_TestInstantiations()00011 {00012 <a class="code" href="class_m_d5.html">MD5</a> x;00013 }00014 00015 <span class="keywordtype">void</span> MD5::Init()00016 {00017 m_digest[0] = 0x67452301L;00018 m_digest[1] = 0xefcdab89L;00019 m_digest[2] = 0x98badcfeL;00020 m_digest[3] = 0x10325476L;00021 }00022 00023 <span class="keywordtype">void</span> MD5::Transform (word32 *digest, <span class="keyword">const</span> word32 *in)00024 {00025 <span class="comment">// #define F1(x, y, z) (x & y | ~x & z)</span>00026 <span class="preprocessor">#define F1(x, y, z) (z ^ (x & (y ^ z)))</span>00027 <span class="preprocessor"></span><span class="preprocessor">#define F2(x, y, z) F1(z, x, y)</span>00028 <span class="preprocessor"></span><span class="preprocessor">#define F3(x, y, z) (x ^ y ^ z)</span>00029 <span class="preprocessor"></span><span class="preprocessor">#define F4(x, y, z) (y ^ (x | ~z))</span>00030 <span class="preprocessor"></span>00031 <span class="preprocessor">#define MD5STEP(f, w, x, y, z, data, s) \</span>00032 <span class="preprocessor"> w = rotlFixed(w + f(x, y, z) + data, s) + x</span>00033 <span class="preprocessor"></span>00034 word32 a, b, c, d;00035 00036 a=digest[0];00037 b=digest[1];00038 c=digest[2];00039 d=digest[3];00040 00041 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);00042 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);00043 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);00044 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);00045 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);00046 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);00047 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);00048 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);00049 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);00050 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);00051 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);00052 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);00053 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);00054 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);00055 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);00056 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);00057 00058 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);00059 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);00060 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);00061 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);00062 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);00063 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);00064 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);00065 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);00066 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);00067 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);00068 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);00069 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);00070 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);00071 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);00072 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);00073 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);00074 00075 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);00076 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);00077 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);00078 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);00079 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);00080 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);00081 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);00082 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);00083 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);00084 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);00085 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);00086 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);00087 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);00088 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);00089 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);00090 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);00091 00092 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);00093 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);00094 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);00095 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);00096 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);00097 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);00098 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);00099 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);00100 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);00101 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);00102 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);00103 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);00104 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);00105 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);00106 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);00107 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);00108 00109 digest[0]+=a;00110 digest[1]+=b;00111 digest[2]+=c;00112 digest[3]+=d;00113 }00114 00115 NAMESPACE_END</pre></div><hr size="1"><address style="align: right;"><small>Generated on Tue Jul 8 23:34:19 2003 for Crypto++ by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 > </a>1.3.2 </small></address></body></html>⌨️ 快捷键说明
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