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<h1>sha1.cpp File Reference</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
This file implements the Secure Hashing Algorithm 1 as defined in FIPS PUB 180-1 published April 17, 1995.<p>
The SHA-1, produces a 160-bit message digest for a given data stream. It should take about 2**n steps to find a message with the same digest as a given message and 2**(n/2) to find any two messages with the same digest, when n is the digest size in bits. Therefore, this algorithm can serve as a means of providing a "fingerprint" for a message.<p>
Portability Issues: SHA-1 is defined in terms of 32-bit "words". This code uses <stdint.h> (included via "sha1.h" to define 32 and 8 bit unsigned integer types. If your C compiler does not support 32 bit unsigned integers, this code is not appropriate.<p>
Caveats: SHA-1 is designed to work with messages less than 2^64 bits long. Although SHA-1 allows a message digest to be generated for messages of any number of bits less than 2^64, this implementation only works with messages with a length that is a multiple of the size of an 8-bit character.<p>
<dl compact><dt><b>Id</b></dt><dd><a class="el" href="a04943.html">sha1.cpp</a>,v 1.4 2003/10/20 16:10:17 lecroart Exp </dd></dl>
<p>
Definition in file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
<code>#include "<a class="el" href="a06444.html">stdmisc.h</a>"</code><br>
<code>#include <stdio.h></code><br>
<code>#include <string.h></code><br>
<code>#include <string></code><br>
<code>#include <map></code><br>
<code>#include <vector></code><br>
<code>#include "<a class="el" href="a06367.html">nel/misc/sha1.h</a>"</code><br>
<code>#include "<a class="el" href="a05709.html">nel/misc/file.h</a>"</code><br>
<code>#include "<a class="el" href="a06168.html">nel/misc/path.h</a>"</code><br>
<p>
<a href="a06366.html">Go to the source code of this file.</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Data Structures</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>struct </td><td class="memItemRight" valign=bottom><a class="el" href="a03895.html">SHA1Context</a></td></tr>
<tr><td colspan=2><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>#define </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a1">SHA1CircularShift</a>(bits, word) (((word) << (bits)) | ((word) >> (32-(bits))))</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>#define </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a0">SHA1HashSize</a> 20</td></tr>
<tr><td colspan=2><br><h2>Typedefs</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>typedef short </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a4">int_least16_t</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>typedef <a class="el" href="a03895.html">SHA1Context</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a7">SHA1Context</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>typedef unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a2">uint32_t</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>typedef unsigned char </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a3">uint8_t</a></td></tr>
<tr><td colspan=2><br><h2>Enumerations</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>enum </td><td class="memItemRight" valign=bottom>{ <a class="el" href="a04943.html#a19a8">shaSuccess</a> = 0,
<a class="el" href="a04943.html#a19a9">shaNull</a>,
<a class="el" href="a04943.html#a19a10">shaInputTooLong</a>,
<a class="el" href="a04943.html#a19a11">shaStateError</a>
}</td></tr>
<tr><td colspan=2><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a02607.html">CHashKey</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a16">getSHA1</a> (const string &<a class="el" href="a04560.html#a1">filename</a>)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a02607.html">CHashKey</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a15">getSHA1</a> (const <a class="el" href="a04558.html#a7">uint8</a> *<a class="el" href="a04223.html#a589">buffer</a>, <a class="el" href="a04558.html#a11">uint32</a> <a class="el" href="a04223.html#a587">size</a>)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a13">SHA1Input</a> (<a class="el" href="a03895.html">SHA1Context</a> *, const <a class="el" href="a04943.html#a3">uint8_t</a> *, unsigned int)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a17">SHA1PadMessage</a> (<a class="el" href="a03895.html">SHA1Context</a> *)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a18">SHA1ProcessMessageBlock</a> (<a class="el" href="a03895.html">SHA1Context</a> *)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a12">SHA1Reset</a> (<a class="el" href="a03895.html">SHA1Context</a> *)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a14">SHA1Result</a> (<a class="el" href="a03895.html">SHA1Context</a> *, <a class="el" href="a04943.html#a3">uint8_t</a> Message_Digest[20])</td></tr>
<tr><td colspan=2><br><h2>Variables</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04943.html#a3">uint8_t</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a6">buffer</a> [<a class="el" href="a04943.html#a5">bufferSize</a>]</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>const int </td><td class="memItemRight" valign=bottom><a class="el" href="a04943.html#a5">bufferSize</a> = 100000</td></tr>
</table>
<hr><h2>Define Documentation</h2>
<a class="anchor" name="a1" doxytag="sha1.cpp::SHA1CircularShift" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> #define SHA1CircularShift</td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bits, <tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>word </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> (((word) << (bits)) | ((word) >> (32-(bits))))
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<p>
<p>
Definition at line <a class="el" href="a06366.html#l00235">235</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00430">SHA1ProcessMessageBlock()</a>. </td>
</tr>
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<a class="anchor" name="a0" doxytag="sha1.cpp::SHA1HashSize" ></a><p>
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<td class="md" nowrap valign="top"> #define SHA1HashSize 20
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<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a06366.html#l00106">106</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00299">SHA1Result()</a>. </td>
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</table>
<hr><h2>Typedef Documentation</h2>
<a class="anchor" name="a4" doxytag="sha1.cpp::int_least16_t" ></a><p>
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<td class="md" nowrap valign="top"> typedef short <a class="el" href="a04943.html#a4">int_least16_t</a>
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<p>
Definition at line <a class="el" href="a06366.html#l00089">89</a> of file <a class="el" href="a06366.html">sha1.cpp</a>. </td>
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<a class="anchor" name="a7" doxytag="sha1.cpp::SHA1Context" ></a><p>
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<td class="md" nowrap valign="top"> typedef struct <a class="el" href="a03895.html">SHA1Context</a> <a class="el" href="a03895.html">SHA1Context</a>
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</td>
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<td>
</td>
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<p>
</td>
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<a class="anchor" name="a2" doxytag="sha1.cpp::uint32_t" ></a><p>
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<td class="md" nowrap valign="top"> typedef unsigned int <a class="el" href="a04943.html#a2">uint32_t</a>
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<p>
<p>
Definition at line <a class="el" href="a06366.html#l00087">87</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00430">SHA1ProcessMessageBlock()</a>. </td>
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<a class="anchor" name="a3" doxytag="sha1.cpp::uint8_t" ></a><p>
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<td class="md" nowrap valign="top"> typedef unsigned char <a class="el" href="a04943.html#a3">uint8_t</a>
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<p>
Definition at line <a class="el" href="a06366.html#l00088">88</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00139">getSHA1()</a>. </td>
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<hr><h2>Enumeration Type Documentation</h2>
<a class="anchor" name="a19" doxytag="sha1.cpp::@1" ></a><p>
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<td class="md" nowrap valign="top"> anonymous enum
</table>
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<td>
</td>
<td>
<p>
<dl compact><dt><b>Enumeration values: </b></dt><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em><a class="anchor" name="a19a8" doxytag="shaSuccess" ></a>shaSuccess</em> </td><td>
</td></tr>
<tr><td valign=top><em><a class="anchor" name="a19a9" doxytag="shaNull" ></a>shaNull</em> </td><td>
</td></tr>
<tr><td valign=top><em><a class="anchor" name="a19a10" doxytag="shaInputTooLong" ></a>shaInputTooLong</em> </td><td>
</td></tr>
<tr><td valign=top><em><a class="anchor" name="a19a11" doxytag="shaStateError" ></a>shaStateError</em> </td><td>
</td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="a06366.html#l00098">98</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
<div class="fragment"><pre>00099 {
00100 <a class="code" href="a04943.html#a19a8">shaSuccess</a> = 0,
00101 <a class="code" href="a04943.html#a19a9">shaNull</a>, <span class="comment">/* Null pointer parameter */</span>
00102 <a class="code" href="a04943.html#a19a10">shaInputTooLong</a>, <span class="comment">/* input data too long */</span>
00103 <a class="code" href="a04943.html#a19a11">shaStateError</a> <span class="comment">/* called Input after Result */</span>
00104 };
</pre></div> </td>
</tr>
</table>
<hr><h2>Function Documentation</h2>
<a class="anchor" name="a16" doxytag="sha1.cpp::getSHA1" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="a02607.html">CHashKey</a> getSHA1 </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const string & </td>
<td class="mdname1" valign="top" nowrap> <em>filename</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a06366.html#l00170">170</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
References <a class="el" href="a05646.html#l00649">buffer</a>, <a class="el" href="a06366.html#l00095">bufferSize</a>, <a class="el" href="a05708.html#l00255">NLMISC::CIFile::close()</a>, <a class="el" href="a05708.html#l00349">NLMISC::CIFile::eof()</a>, <a class="el" href="a05709.html#l00119">NLMISC::CIFile::getFileSize()</a>, <a class="el" href="a05484.html#l00038">min</a>, <a class="el" href="a05622.html#l00135">nlwarning</a>, <a class="el" href="a05708.html#l00135">NLMISC::CIFile::open()</a>, <a class="el" href="a05708.html#l00355">NLMISC::CIFile::serialBuffer()</a>, <a class="el" href="a05708.html#l00242">NLMISC::CIFile::setCacheFileOnOpen()</a>, <a class="el" href="a06366.html#l00357">SHA1Input()</a>, <a class="el" href="a06366.html#l00257">SHA1Reset()</a>, <a class="el" href="a06366.html#l00299">SHA1Result()</a>, <a class="el" href="a05981.html#l00104">sint</a>, <a class="el" href="a05981.html#l00096">uint8</a>, and <a class="el" href="a06366.html#l00088">uint8_t</a>.
<p>
<div class="fragment"><pre>00171 {
00172 <a class="code" href="a03895.html">SHA1Context</a> sha;
00173 <span class="keywordtype">int</span> err;
00174 <a class="code" href="a04943.html#a3">uint8_t</a> Message_Digest[20];
00175
00176 <span class="comment">//printf("reading '%s'\n", findData.cFileName);</span>
00177 <a class="code" href="a02653.html">CIFile</a> ifile;
00178 ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea20">setCacheFileOnOpen</a>(<span class="keyword">true</span>);
00179 <span class="keywordflow">if</span> (!ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea12">open</a>(CPath::lookup(filename)))
00180 {
00181 <a class="code" href="a04199.html#a2">nlwarning</a> (<span class="stringliteral">"SHA: Can't open the file '%s'"</span>, <a class="code" href="a05377.html#a2">filename</a>.c_str());
00182 <span class="keywordflow">return</span> <a class="code" href="a02607.html">CHashKey</a>();
00183 }
00184
00185 <span class="comment">//FILE *fp = fopen (filename.c_str(), "rb");</span>
00186 <span class="comment">//if (fp == NULL) return CHashKey();</span>
00187
00188 err = <a class="code" href="a04943.html#a12">SHA1Reset</a>(&sha);
00189 <span class="keywordflow">if</span> (err)
00190 {
00191 <a class="code" href="a04199.html#a2">nlwarning</a>(<span class="stringliteral">"SHA: SHA1Reset Error %d.\n"</span>, err );
00192 ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea3">close</a> ();
00193 <span class="keywordflow">return</span> <a class="code" href="a02607.html">CHashKey</a>();
00194 }
00195
00196 <a class="code" href="a04558.html#a14">sint</a> fs = ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea6">getFileSize</a>();
00197 <a class="code" href="a04558.html#a14">sint</a> n, read = 0;
00198 <span class="keywordflow">do</span>
00199 {
00200 <span class="comment">//bs = (int)fread (buffer, 1, bufferSize, fp);</span>
00201 n = <a class="code" href="a04061.html#a0">std::min</a> (bufferSize, fs-read);
00202 <span class="comment">//nlinfo ("read %d bytes", n);</span>
00203 ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea15">serialBuffer</a>((<a class="code" href="a04558.html#a7">uint8</a> *)<a class="code" href="a04223.html#a589">buffer</a>, n);
00204
00205 err = <a class="code" href="a04943.html#a13">SHA1Input</a>(&sha, <a class="code" href="a04223.html#a589">buffer</a>, n);
00206 <span class="keywordflow">if</span> (err)
00207 {
00208 <a class="code" href="a04199.html#a2">nlwarning</a> (<span class="stringliteral">"SHA: SHA1Input Error %d.\n"</span>, err);
00209 ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea3">close</a>();
00210 <span class="keywordflow">return</span> <a class="code" href="a02607.html">CHashKey</a>();
00211 }
00212 read += n;
00213 }
00214 <span class="keywordflow">while</span> (!ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea4">eof</a>());
00215
00216 ifile.<a class="code" href="a02653.html#NLMISC_1_1CIFilea3">close</a> ();
00217
00218 err = <a class="code" href="a04943.html#a14">SHA1Result</a>(&sha, Message_Digest);
00219 <span class="keywordflow">if</span> (err)
00220 {
00221 <a class="code" href="a04199.html#a2">nlwarning</a>(<span class="stringliteral">"SHA: SHA1Result Error %d, could not compute message digest.\n"</span>, err );
00222 <span class="keywordflow">return</span> <a class="code" href="a02607.html">CHashKey</a>();
00223 }
00224
00225 <a class="code" href="a02607.html">CHashKey</a> hk (Message_Digest);
00226 <span class="keywordflow">return</span> hk;
00227 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="a15" doxytag="sha1.cpp::getSHA1" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="a02607.html">CHashKey</a> getSHA1 </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="a04558.html#a7">uint8</a> * </td>
<td class="mdname" nowrap> <em>buffer</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a11">uint32</a> </td>
<td class="mdname" nowrap> <em>size</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
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<p>
<p>
Definition at line <a class="el" href="a06366.html#l00139">139</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
<div class="fragment"><pre>00140 {
00141 <a class="code" href="a03895.html">SHA1Context</a> sha;
00142 <span class="keywordtype">int</span> err;
00143 <a class="code" href="a04943.html#a3">uint8_t</a> Message_Digest[20];
00144
00145 err = <a class="code" href="a04943.html#a12">SHA1Reset</a>(&sha);
00146 <span class="keywordflow">if</span> (err)
00147 {
00148 <a class="code" href="a04199.html#a2">nlwarning</a>(<span class="stringliteral">"SHA: SHA1Reset Error %d.\n"</span>, err );
00149 <span class="keywordflow">return</span> <a class="code" href="a02607.html">CHashKey</a>();
00150 }
00151
00152 err = <a class="code" href="a04943.html#a13">SHA1Input</a>(&sha, (<span class="keyword">const</span> <a class="code" href="a04943.html#a3">uint8_t</a>*)buffer, size);
00153 <span class="keywordflow">if</span> (err)
00154 {
00155 <a class="code" href="a04199.html#a2">nlwarning</a> (<span class="stringliteral">"SHA: SHA1Input Error %d.\n"</span>, err);
00156 <span class="keywordflow">return</span> <a class="code" href="a02607.html">CHashKey</a>();
00157 }
00158
00159 err = <a class="code" href="a04943.html#a14">SHA1Result</a>(&sha, Message_Digest);
00160 <span class="keywordflow">if</span> (err)
00161 {
00162 <a class="code" href="a04199.html#a2">nlwarning</a>(<span class="stringliteral">"SHA: SHA1Result Error %d, could not compute message digest.\n"</span>, err );
00163 <span class="keywordflow">return</span> <a class="code" href="a02607.html">CHashKey</a>();
00164 }
00165
00166 <a class="code" href="a02607.html">CHashKey</a> hk (Message_Digest);
00167 <span class="keywordflow">return</span> hk;
00168 }
</pre></div> </td>
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</table>
<a class="anchor" name="a13" doxytag="sha1.cpp::SHA1Input" ></a><p>
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<td class="md" nowrap valign="top"> int SHA1Input </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a03895.html">SHA1Context</a> * </td>
<td class="mdname" nowrap>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>const <a class="el" href="a04943.html#a3">uint8_t</a> * </td>
<td class="mdname" nowrap>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>unsigned </td>
<td class="mdname" nowrap> <em>int</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
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</table>
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</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a06366.html#l00357">357</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
References <a class="el" href="a06366.html#l00123">SHA1Context::Computed</a>, <a class="el" href="a06366.html#l00124">SHA1Context::Corrupted</a>, <a class="el" href="a06366.html#l00117">SHA1Context::Length_High</a>, <a class="el" href="a06366.html#l00116">SHA1Context::Length_Low</a>, <a class="el" href="a06366.html#l00121">SHA1Context::Message_Block</a>, <a class="el" href="a06366.html#l00120">SHA1Context::Message_Block_Index</a>, <a class="el" href="a06366.html#l00430">SHA1ProcessMessageBlock()</a>, <a class="el" href="a04943.html#a19a9">shaNull</a>, <a class="el" href="a04943.html#a19a11">shaStateError</a>, and <a class="el" href="a04943.html#a19a8">shaSuccess</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00139">getSHA1()</a>.
<p>
<div class="fragment"><pre>00360 {
00361 <span class="keywordflow">if</span> (!length)
00362 {
00363 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a8">shaSuccess</a>;
00364 }
00365
00366 <span class="keywordflow">if</span> (!context || !message_array)
00367 {
00368 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a9">shaNull</a>;
00369 }
00370
00371 <span class="keywordflow">if</span> (context-><a class="code" href="a03895.html#SHA1Contexto0">Computed</a>)
00372 {
00373 context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a> = <a class="code" href="a04943.html#a19a11">shaStateError</a>;
00374
00375 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a11">shaStateError</a>;
00376 }
00377
00378 <span class="keywordflow">if</span> (context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a>)
00379 {
00380 <span class="keywordflow">return</span> context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a>;
00381 }
00382 <span class="keywordflow">while</span>(length-- && !context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a>)
00383 {
00384 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a>++] =
00385 (*message_array & 0xFF);
00386
00387 context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a> += 8;
00388 <span class="keywordflow">if</span> (context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a> == 0)
00389 {
00390 context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a>++;
00391 <span class="keywordflow">if</span> (context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a> == 0)
00392 {
00393 <span class="comment">/* Message is too long */</span>
00394 context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a> = 1;
00395 }
00396 }
00397
00398 <span class="keywordflow">if</span> (context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a> == 64)
00399 {
00400 <a class="code" href="a04943.html#a18">SHA1ProcessMessageBlock</a>(context);
00401 }
00402
00403 message_array++;
00404 }
00405
00406 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a8">shaSuccess</a>;
00407 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="a17" doxytag="sha1.cpp::SHA1PadMessage" ></a><p>
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<td class="md" nowrap valign="top"> void SHA1PadMessage </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a03895.html">SHA1Context</a> * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
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<table cellspacing=5 cellpadding=0 border=0>
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</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a06366.html#l00541">541</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
References <a class="el" href="a06366.html#l00117">SHA1Context::Length_High</a>, <a class="el" href="a06366.html#l00116">SHA1Context::Length_Low</a>, <a class="el" href="a06366.html#l00121">SHA1Context::Message_Block</a>, <a class="el" href="a06366.html#l00120">SHA1Context::Message_Block_Index</a>, and <a class="el" href="a06366.html#l00430">SHA1ProcessMessageBlock()</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00299">SHA1Result()</a>.
<p>
<div class="fragment"><pre>00542 {
00543 <span class="comment">/*</span>
00544 <span class="comment"> * Check to see if the current message block is too small to hold</span>
00545 <span class="comment"> * the initial padding bits and length. If so, we will pad the</span>
00546 <span class="comment"> * block, process it, and then continue padding into a second</span>
00547 <span class="comment"> * block.</span>
00548 <span class="comment"> */</span>
00549 <span class="keywordflow">if</span> (context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a> > 55)
00550 {
00551 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a>++] = 0x80;
00552 <span class="keywordflow">while</span>(context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a> < 64)
00553 {
00554 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a>++] = 0;
00555 }
00556
00557 <a class="code" href="a04943.html#a18">SHA1ProcessMessageBlock</a>(context);
00558
00559 <span class="keywordflow">while</span>(context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a> < 56)
00560 {
00561 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a>++] = 0;
00562 }
00563 }
00564 <span class="keywordflow">else</span>
00565 {
00566 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a>++] = 0x80;
00567 <span class="keywordflow">while</span>(context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a> < 56)
00568 {
00569
00570 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a>++] = 0;
00571 }
00572 }
00573
00574 <span class="comment">/*</span>
00575 <span class="comment"> * Store the message length as the last 8 octets</span>
00576 <span class="comment"> */</span>
00577 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[56] = context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a> >> 24;
00578 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[57] = context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a> >> 16;
00579 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[58] = context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a> >> 8;
00580 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[59] = context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a>;
00581 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[60] = context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a> >> 24;
00582 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[61] = context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a> >> 16;
00583 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[62] = context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a> >> 8;
00584 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[63] = context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a>;
00585
00586 <a class="code" href="a04943.html#a18">SHA1ProcessMessageBlock</a>(context);
00587 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="a18" doxytag="sha1.cpp::SHA1ProcessMessageBlock" ></a><p>
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<td class="md" nowrap valign="top"> void SHA1ProcessMessageBlock </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a03895.html">SHA1Context</a> * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
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</table>
<table cellspacing=5 cellpadding=0 border=0>
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</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a06366.html#l00430">430</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
References <a class="el" href="a06366.html#l00114">SHA1Context::Intermediate_Hash</a>, <a class="el" href="a06366.html#l00121">SHA1Context::Message_Block</a>, <a class="el" href="a06366.html#l00120">SHA1Context::Message_Block_Index</a>, <a class="el" href="a06366.html#l00235">SHA1CircularShift</a>, <a class="el" href="a05646.html#l00985">t</a>, and <a class="el" href="a06366.html#l00087">uint32_t</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00357">SHA1Input()</a>, and <a class="el" href="a06366.html#l00541">SHA1PadMessage()</a>.
<p>
<div class="fragment"><pre>00431 {
00432 <span class="keyword">const</span> <a class="code" href="a04943.html#a2">uint32_t</a> K[] = { <span class="comment">/* Constants defined in SHA-1 */</span>
00433 0x5A827999,
00434 0x6ED9EBA1,
00435 0x8F1BBCDC,
00436 0xCA62C1D6
00437 };
00438 <span class="keywordtype">int</span> <a class="code" href="a04223.html#a627">t</a>; <span class="comment">/* Loop counter */</span>
00439 <a class="code" href="a04943.html#a2">uint32_t</a> temp; <span class="comment">/* Temporary word value */</span>
00440 <a class="code" href="a04943.html#a2">uint32_t</a> W[80]; <span class="comment">/* Word sequence */</span>
00441 <a class="code" href="a04943.html#a2">uint32_t</a> A, B, C, D, E; <span class="comment">/* Word buffers */</span>
00442
00443 <span class="comment">/*</span>
00444 <span class="comment"> * Initialize the first 16 words in the array W</span>
00445 <span class="comment"> */</span>
00446 <span class="keywordflow">for</span>(<a class="code" href="a04223.html#a627">t</a> = 0; <a class="code" href="a04223.html#a627">t</a> < 16; <a class="code" href="a04223.html#a627">t</a>++)
00447 {
00448 W[<a class="code" href="a04223.html#a627">t</a>] = context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[<a class="code" href="a04223.html#a627">t</a> * 4] << 24;
00449 W[<a class="code" href="a04223.html#a627">t</a>] |= context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[<a class="code" href="a04223.html#a627">t</a> * 4 + 1] << 16;
00450 W[<a class="code" href="a04223.html#a627">t</a>] |= context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[<a class="code" href="a04223.html#a627">t</a> * 4 + 2] << 8;
00451 W[<a class="code" href="a04223.html#a627">t</a>] |= context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[<a class="code" href="a04223.html#a627">t</a> * 4 + 3];
00452 }
00453
00454 <span class="keywordflow">for</span>(<a class="code" href="a04223.html#a627">t</a> = 16; <a class="code" href="a04223.html#a627">t</a> < 80; <a class="code" href="a04223.html#a627">t</a>++)
00455 {
00456 W[<a class="code" href="a04223.html#a627">t</a>] = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
00457 }
00458
00459 A = context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[0];
00460 B = context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[1];
00461 C = context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[2];
00462 D = context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[3];
00463 E = context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[4];
00464
00465 <span class="keywordflow">for</span>(<a class="code" href="a04223.html#a627">t</a> = 0; <a class="code" href="a04223.html#a627">t</a> < 20; <a class="code" href="a04223.html#a627">t</a>++)
00466 {
00467 temp = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(5,A) +
00468 ((B & C) | ((~B) & D)) + E + W[<a class="code" href="a04223.html#a627">t</a>] + K[0];
00469 E = D;
00470 D = C;
00471 C = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(30,B);
00472
00473 B = A;
00474 A = temp;
00475 }
00476
00477 <span class="keywordflow">for</span>(<a class="code" href="a04223.html#a627">t</a> = 20; <a class="code" href="a04223.html#a627">t</a> < 40; <a class="code" href="a04223.html#a627">t</a>++)
00478 {
00479 temp = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(5,A) + (B ^ C ^ D) + E + W[<a class="code" href="a04223.html#a627">t</a>] + K[1];
00480 E = D;
00481 D = C;
00482 C = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(30,B);
00483 B = A;
00484 A = temp;
00485 }
00486
00487 <span class="keywordflow">for</span>(<a class="code" href="a04223.html#a627">t</a> = 40; <a class="code" href="a04223.html#a627">t</a> < 60; <a class="code" href="a04223.html#a627">t</a>++)
00488 {
00489 temp = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(5,A) +
00490 ((B & C) | (B & D) | (C & D)) + E + W[<a class="code" href="a04223.html#a627">t</a>] + K[2];
00491 E = D;
00492 D = C;
00493 C = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(30,B);
00494 B = A;
00495 A = temp;
00496 }
00497
00498 <span class="keywordflow">for</span>(<a class="code" href="a04223.html#a627">t</a> = 60; <a class="code" href="a04223.html#a627">t</a> < 80; <a class="code" href="a04223.html#a627">t</a>++)
00499 {
00500 temp = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(5,A) + (B ^ C ^ D) + E + W[<a class="code" href="a04223.html#a627">t</a>] + K[3];
00501 E = D;
00502 D = C;
00503 C = <a class="code" href="a04943.html#a1">SHA1CircularShift</a>(30,B);
00504 B = A;
00505 A = temp;
00506 }
00507
00508 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[0] += A;
00509 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[1] += B;
00510 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[2] += C;
00511 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[3] += D;
00512 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[4] += E;
00513
00514 context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a> = 0;
00515 }
</pre></div> </td>
</tr>
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<a class="anchor" name="a12" doxytag="sha1.cpp::SHA1Reset" ></a><p>
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<td class="md" nowrap valign="top"> int SHA1Reset </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a03895.html">SHA1Context</a> * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a06366.html#l00257">257</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
References <a class="el" href="a06366.html#l00123">SHA1Context::Computed</a>, <a class="el" href="a06366.html#l00124">SHA1Context::Corrupted</a>, <a class="el" href="a06366.html#l00114">SHA1Context::Intermediate_Hash</a>, <a class="el" href="a06366.html#l00117">SHA1Context::Length_High</a>, <a class="el" href="a06366.html#l00116">SHA1Context::Length_Low</a>, <a class="el" href="a06366.html#l00120">SHA1Context::Message_Block_Index</a>, <a class="el" href="a04943.html#a19a9">shaNull</a>, and <a class="el" href="a04943.html#a19a8">shaSuccess</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00139">getSHA1()</a>.
<p>
<div class="fragment"><pre>00258 {
00259 <span class="keywordflow">if</span> (!context)
00260 {
00261 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a9">shaNull</a>;
00262 }
00263
00264 context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a> = 0;
00265 context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a> = 0;
00266 context-><a class="code" href="a03895.html#SHA1Contexto6">Message_Block_Index</a> = 0;
00267
00268 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[0] = 0x67452301;
00269 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[1] = 0xEFCDAB89;
00270 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[2] = 0x98BADCFE;
00271 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[3] = 0x10325476;
00272 context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[4] = 0xC3D2E1F0;
00273
00274 context-><a class="code" href="a03895.html#SHA1Contexto0">Computed</a> = 0;
00275 context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a> = 0;
00276
00277 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a8">shaSuccess</a>;
00278 }
</pre></div> </td>
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<a class="anchor" name="a14" doxytag="sha1.cpp::SHA1Result" ></a><p>
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<td class="md" nowrap valign="top"> int SHA1Result </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a03895.html">SHA1Context</a> * </td>
<td class="mdname" nowrap>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04943.html#a3">uint8_t</a> </td>
<td class="mdname" nowrap> <em>Message_Digest</em>[20]</td>
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<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
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</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a06366.html#l00299">299</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
References <a class="el" href="a06366.html#l00123">SHA1Context::Computed</a>, <a class="el" href="a06366.html#l00124">SHA1Context::Corrupted</a>, <a class="el" href="a06366.html#l00114">SHA1Context::Intermediate_Hash</a>, <a class="el" href="a06366.html#l00117">SHA1Context::Length_High</a>, <a class="el" href="a06366.html#l00116">SHA1Context::Length_Low</a>, <a class="el" href="a06366.html#l00121">SHA1Context::Message_Block</a>, <a class="el" href="a06366.html#l00106">SHA1HashSize</a>, <a class="el" href="a06366.html#l00541">SHA1PadMessage()</a>, <a class="el" href="a04943.html#a19a9">shaNull</a>, and <a class="el" href="a04943.html#a19a8">shaSuccess</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00139">getSHA1()</a>.
<p>
<div class="fragment"><pre>00301 {
00302 <span class="keywordtype">int</span> i;
00303
00304 <span class="keywordflow">if</span> (!context || !Message_Digest)
00305 {
00306 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a9">shaNull</a>;
00307 }
00308
00309 <span class="keywordflow">if</span> (context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a>)
00310 {
00311 <span class="keywordflow">return</span> context-><a class="code" href="a03895.html#SHA1Contexto1">Corrupted</a>;
00312 }
00313
00314 <span class="keywordflow">if</span> (!context-><a class="code" href="a03895.html#SHA1Contexto0">Computed</a>)
00315 {
00316 <a class="code" href="a04943.html#a17">SHA1PadMessage</a>(context);
00317 <span class="keywordflow">for</span>(i=0; i<64; ++i)
00318 {
00319 <span class="comment">/* message may be sensitive, clear it out */</span>
00320 context-><a class="code" href="a03895.html#SHA1Contexto5">Message_Block</a>[i] = 0;
00321 }
00322 context-><a class="code" href="a03895.html#SHA1Contexto4">Length_Low</a> = 0; <span class="comment">/* and clear length */</span>
00323 context-><a class="code" href="a03895.html#SHA1Contexto3">Length_High</a> = 0;
00324 context-><a class="code" href="a03895.html#SHA1Contexto0">Computed</a> = 1;
00325
00326 }
00327
00328 <span class="keywordflow">for</span>(i = 0; i < <a class="code" href="a04943.html#a0">SHA1HashSize</a>; ++i)
00329 {
00330 Message_Digest[i] = context-><a class="code" href="a03895.html#SHA1Contexto2">Intermediate_Hash</a>[i>>2]
00331 >> 8 * ( 3 - ( i & 0x03 ) );
00332 }
00333
00334 <span class="keywordflow">return</span> <a class="code" href="a04943.html#a19a8">shaSuccess</a>;
00335 }
</pre></div> </td>
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<hr><h2>Variable Documentation</h2>
<a class="anchor" name="a6" doxytag="sha1.cpp::buffer" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="a04943.html#a3">uint8_t</a> <a class="el" href="a04223.html#a589">buffer</a>[<a class="el" href="a04943.html#a5">bufferSize</a>]<code> [static]</code>
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<p>
Definition at line <a class="el" href="a06366.html#l00096">96</a> of file <a class="el" href="a06366.html">sha1.cpp</a>. </td>
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<a class="anchor" name="a5" doxytag="sha1.cpp::bufferSize" ></a><p>
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<td class="md" nowrap valign="top"> const int <a class="el" href="a04943.html#a5">bufferSize</a> = 100000<code> [static]</code>
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<p>
Definition at line <a class="el" href="a06366.html#l00095">95</a> of file <a class="el" href="a06366.html">sha1.cpp</a>.
<p>
Referenced by <a class="el" href="a06366.html#l00170">getSHA1()</a>. </td>
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