📄 iterhash_8h-source.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>Crypto++: iterhash.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.2 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>File Members</span></a></li> </ul></div><h1>iterhash.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef CRYPTOPP_ITERHASH_H</span><a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_ITERHASH_H</span><a name="l00003"></a>00003 <span class="preprocessor"></span><a name="l00004"></a>00004 <span class="preprocessor">#include "<a class="code" href="cryptlib_8h.html">cryptlib.h</a>"</span><a name="l00005"></a>00005 <span class="preprocessor">#include "secblock.h"</span><a name="l00006"></a>00006 <span class="preprocessor">#include "misc.h"</span><a name="l00007"></a>00007 <span class="preprocessor">#include "<a class="code" href="simple_8h.html">simple.h</a>"</span><a name="l00008"></a>00008 <a name="l00009"></a>00009 NAMESPACE_BEGIN(CryptoPP)<a name="l00010"></a>00010 <a name="l00011"></a>00011 <span class="comment">//! exception thrown when trying to hash more data than is allowed by a hash function</span><a name="l00012"></a><a class="code" href="class_hash_input_too_long.html">00012</a> <span class="comment"></span>class CRYPTOPP_DLL <a class="code" href="class_hash_input_too_long.html" title="exception thrown when trying to hash more data than is allowed by a hash function...">HashInputTooLong</a> : public <a class="code" href="class_invalid_data_format.html" title="exception thrown when input data is received that doesn't conform to expected format...">InvalidDataFormat</a><a name="l00013"></a>00013 {<a name="l00014"></a>00014 <span class="keyword">public</span>:<a name="l00015"></a><a class="code" href="class_hash_input_too_long.html#b4437de498d6a4f082d7ae2d23b663d8">00015</a> <span class="keyword">explicit</span> <a class="code" href="class_hash_input_too_long.html" title="exception thrown when trying to hash more data than is allowed by a hash function...">HashInputTooLong</a>(<span class="keyword">const</span> std::string &alg)<a name="l00016"></a>00016 : InvalidDataFormat(<span class="stringliteral">"IteratedHashBase: input data exceeds maximum allowed by hash function "</span> + alg) {}<a name="l00017"></a>00017 };<a name="l00018"></a>00018 <span class="comment"></span><a name="l00019"></a>00019 <span class="comment">//! _</span><a name="l00020"></a>00020 <span class="comment"></span><span class="keyword">template</span> <<span class="keyword">class</span> T, <span class="keyword">class</span> BASE><a name="l00021"></a><a class="code" href="class_iterated_hash_base.html">00021</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_iterated_hash_base.html" title="_">IteratedHashBase</a> : <span class="keyword">public</span> BASE<a name="l00022"></a>00022 {<a name="l00023"></a>00023 <span class="keyword">public</span>:<a name="l00024"></a><a class="code" href="class_iterated_hash_base.html#4316d6e7e38a407d5a71f95de2b112e1">00024</a> <span class="keyword">typedef</span> T HashWordType;<a name="l00025"></a>00025 <a name="l00026"></a><a class="code" href="class_iterated_hash_base.html#301ef0d2c6dae2b250cdf9075c0e5f92">00026</a> <a class="code" href="class_iterated_hash_base.html" title="_">IteratedHashBase</a>() : m_countLo(0), m_countHi(0) {}<a name="l00027"></a><a class="code" href="class_iterated_hash_base.html#4c3fa4d29ad29d2b8add76ea62117523">00027</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> OptimalBlockSize()<span class="keyword"> const </span>{<span class="keywordflow">return</span> this->BlockSize();}<a name="l00028"></a><a class="code" href="class_iterated_hash_base.html#167fbaf6c7e6f9f1744d7204cf118c65">00028</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> OptimalDataAlignment()<span class="keyword"> const </span>{<span class="keywordflow">return</span> GetAlignmentOf<T>();}<a name="l00029"></a>00029 <span class="keywordtype">void</span> Update(<span class="keyword">const</span> byte *input, <span class="keywordtype">size_t</span> length);<a name="l00030"></a>00030 byte * CreateUpdateSpace(<span class="keywordtype">size_t</span> &size);<a name="l00031"></a>00031 <span class="keywordtype">void</span> Restart();<a name="l00032"></a>00032 <span class="keywordtype">void</span> TruncatedFinal(byte *digest, <span class="keywordtype">size_t</span> size);<a name="l00033"></a>00033 <a name="l00034"></a>00034 <span class="keyword">protected</span>:<a name="l00035"></a><a class="code" href="class_iterated_hash_base.html#db8961e69e48b194b83815d5466f8e7d">00035</a> <span class="keyword">inline</span> T GetBitCountHi()<span class="keyword"> const </span>{<span class="keywordflow">return</span> (m_countLo >> (8*<span class="keyword">sizeof</span>(T)-3)) + (m_countHi << 3);}<a name="l00036"></a><a class="code" href="class_iterated_hash_base.html#a2dadd15d5ef537cf6e0286f42ab62c8">00036</a> <span class="keyword">inline</span> T GetBitCountLo()<span class="keyword"> const </span>{<span class="keywordflow">return</span> m_countLo << 3;}<a name="l00037"></a>00037 <a name="l00038"></a>00038 <span class="keywordtype">void</span> PadLastBlock(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> lastBlockSize, byte padFirst=0x80);<a name="l00039"></a>00039 <span class="keyword">virtual</span> <span class="keywordtype">void</span> Init() =0;<a name="l00040"></a>00040 <a name="l00041"></a>00041 <span class="keyword">virtual</span> <a class="code" href="cryptlib_8h.html#aeb92d42f5a6e27b8ba19f18d69d142b">ByteOrder</a> GetByteOrder() <span class="keyword">const</span> =0;<a name="l00042"></a>00042 <span class="keyword">virtual</span> <span class="keywordtype">void</span> HashEndianCorrectedBlock(<span class="keyword">const</span> HashWordType *data) =0;<a name="l00043"></a>00043 <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> HashMultipleBlocks(<span class="keyword">const</span> T *input, <span class="keywordtype">size_t</span> length);<a name="l00044"></a><a class="code" href="class_iterated_hash_base.html#f4f5349f8ebacfde64bb24f2ce758775">00044</a> <span class="keywordtype">void</span> HashBlock(<span class="keyword">const</span> HashWordType *input) {HashMultipleBlocks(input, this->BlockSize());}<a name="l00045"></a>00045 <a name="l00046"></a>00046 <span class="keyword">virtual</span> T* DataBuf() =0;<a name="l00047"></a>00047 <span class="keyword">virtual</span> T* StateBuf() =0;<a name="l00048"></a>00048 <a name="l00049"></a>00049 <span class="keyword">private</span>:<a name="l00050"></a>00050 T m_countLo, m_countHi;⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -