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<a name="l00099"></a>00099 <span class="preprocessor"> r = a * EK[i + 1]; \</span><a name="l00100"></a>00100 <span class="preprocessor"> l = Sbox[m & 511]; \</span><a name="l00101"></a>00101 <span class="preprocessor"> r = rotlFixed(r, 5); \</span><a name="l00102"></a>00102 <span class="preprocessor"> l ^= r; \</span><a name="l00103"></a>00103 <span class="preprocessor"> c += rotlMod(m, r); \</span><a name="l00104"></a>00104 <span class="preprocessor"> r = rotlFixed(r, 5); \</span><a name="l00105"></a>00105 <span class="preprocessor"> l ^= r; \</span><a name="l00106"></a>00106 <span class="preprocessor"> d ^= r; \</span><a name="l00107"></a>00107 <span class="preprocessor"> b += rotlMod(l, r)</span><a name="l00108"></a>00108 <span class="preprocessor"></span><a name="l00109"></a>00109 <span class="preprocessor">#define r_ktr(a,b,c,d,i) \</span><a name="l00110"></a>00110 <span class="preprocessor"> r = a * EK[i + 1]; \</span><a name="l00111"></a>00111 <span class="preprocessor"> a = rotrFixed(a, 13); \</span><a name="l00112"></a>00112 <span class="preprocessor"> m = a + EK[i]; \</span><a name="l00113"></a>00113 <span class="preprocessor"> l = Sbox[m & 511]; \</span><a name="l00114"></a>00114 <span class="preprocessor"> r = rotlFixed(r, 5); \</span><a name="l00115"></a>00115 <span class="preprocessor"> l ^= r; \</span><a name="l00116"></a>00116 <span class="preprocessor"> c -= rotlMod(m, r); \</span><a name="l00117"></a>00117 <span class="preprocessor"> r = rotlFixed(r, 5); \</span><a name="l00118"></a>00118 <span class="preprocessor"> l ^= r; \</span><a name="l00119"></a>00119 <span class="preprocessor"> d ^= r; \</span><a name="l00120"></a>00120 <span class="preprocessor"> b -= rotlMod(l, r)</span><a name="l00121"></a>00121 <span class="preprocessor"></span><a name="l00122"></a>00122 <span class="keyword">typedef</span> <a class="code" href="struct_block_get_and_put.html">BlockGetAndPut<word32, LittleEndian></a> <a class="code" href="struct_block_get_and_put.html">Block</a>;<a name="l00123"></a>00123 <a name="l00124"></a>00124 <span class="keywordtype">void</span> MARS::Enc::ProcessAndXorBlock(<span class="keyword">const</span> byte *inBlock, <span class="keyword">const</span> byte *xorBlock, byte *outBlock)<span class="keyword"> const</span><a name="l00125"></a>00125 <span class="keyword"></span>{<a name="l00126"></a>00126 word32 a, b, c, d, l, m, r;<a name="l00127"></a>00127 <a name="l00128"></a>00128 <a class="code" href="struct_block_get_and_put.html#07781cc0817613fe47e8070999cf4b95">Block::Get</a>(inBlock)(a)(b)(c)(d);<a name="l00129"></a>00129 <a name="l00130"></a>00130 a += EK[0];<a name="l00131"></a>00131 b += EK[1];<a name="l00132"></a>00132 c += EK[2];<a name="l00133"></a>00133 d += EK[3];<a name="l00134"></a>00134 <a name="l00135"></a>00135 <span class="keywordtype">int</span> i;<a name="l00136"></a>00136 <span class="keywordflow">for</span> (i = 0; i < 2; i++) {<a name="l00137"></a>00137 f_mix(a,b,c,d);<a name="l00138"></a>00138 a += d;<a name="l00139"></a>00139 f_mix(b,c,d,a);<a name="l00140"></a>00140 b += c;<a name="l00141"></a>00141 f_mix(c,d,a,b);<a name="l00142"></a>00142 f_mix(d,a,b,c);<a name="l00143"></a>00143 }<a name="l00144"></a>00144 <a name="l00145"></a>00145 f_ktr(a,b,c,d, 4); f_ktr(b,c,d,a, 6); f_ktr(c,d,a,b, 8); f_ktr(d,a,b,c,10); <a name="l00146"></a>00146 f_ktr(a,b,c,d,12); f_ktr(b,c,d,a,14); f_ktr(c,d,a,b,16); f_ktr(d,a,b,c,18); <a name="l00147"></a>00147 f_ktr(a,d,c,b,20); f_ktr(b,a,d,c,22); f_ktr(c,b,a,d,24); f_ktr(d,c,b,a,26); <a name="l00148"></a>00148 f_ktr(a,d,c,b,28); f_ktr(b,a,d,c,30); f_ktr(c,b,a,d,32); f_ktr(d,c,b,a,34); <a name="l00149"></a>00149 <a name="l00150"></a>00150 <span class="keywordflow">for</span> (i = 0; i < 2; i++) {<a name="l00151"></a>00151 b_mix(a,b,c,d);<a name="l00152"></a>00152 b_mix(b,c,d,a);<a name="l00153"></a>00153 c -= b;<a name="l00154"></a>00154 b_mix(c,d,a,b);<a name="l00155"></a>00155 d -= a;<a name="l00156"></a>00156 b_mix(d,a,b,c);<a name="l00157"></a>00157 }<a name="l00158"></a>00158 <a name="l00159"></a>00159 a -= EK[36];<a name="l00160"></a>00160 b -= EK[37];<a name="l00161"></a>00161 c -= EK[38];<a name="l00162"></a>00162 d -= EK[39];<a name="l00163"></a>00163 <a name="l00164"></a>00164 <a class="code" href="struct_block_get_and_put.html#63d96a17e8118407e02896d0b0f8d92d">Block::Put</a>(xorBlock, outBlock)(a)(b)(c)(d);<a name="l00165"></a>00165 }<a name="l00166"></a>00166 <a name="l00167"></a>00167 <span class="keywordtype">void</span> MARS::Dec::ProcessAndXorBlock(<span class="keyword">const</span> byte *inBlock, <span class="keyword">const</span> byte *xorBlock, byte *outBlock)<span class="keyword"> const</span><a name="l00168"></a>00168 <span class="keyword"></span>{<a name="l00169"></a>00169 word32 a, b, c, d, l, m, r;<a name="l00170"></a>00170 <a name="l00171"></a>00171 <a class="code" href="struct_block_get_and_put.html#07781cc0817613fe47e8070999cf4b95">Block::Get</a>(inBlock)(d)(c)(b)(a);<a name="l00172"></a>00172 <a name="l00173"></a>00173 d += EK[36];<a name="l00174"></a>00174 c += EK[37];<a name="l00175"></a>00175 b += EK[38];<a name="l00176"></a>00176 a += EK[39];<a name="l00177"></a>00177 <a name="l00178"></a>00178 <span class="keywordtype">int</span> i;<a name="l00179"></a>00179 <span class="keywordflow">for</span> (i = 0; i < 2; i++) {<a name="l00180"></a>00180 f_mix(a,b,c,d);<a name="l00181"></a>00181 a += d;<a name="l00182"></a>00182 f_mix(b,c,d,a);<a name="l00183"></a>00183 b += c;<a name="l00184"></a>00184 f_mix(c,d,a,b);<a name="l00185"></a>00185 f_mix(d,a,b,c);<a name="l00186"></a>00186 }<a name="l00187"></a>00187 <a name="l00188"></a>00188 r_ktr(a,b,c,d,34); r_ktr(b,c,d,a,32); r_ktr(c,d,a,b,30); r_ktr(d,a,b,c,28);<a name="l00189"></a>00189 r_ktr(a,b,c,d,26); r_ktr(b,c,d,a,24); r_ktr(c,d,a,b,22); r_ktr(d,a,b,c,20);<a name="l00190"></a>00190 r_ktr(a,d,c,b,18); r_ktr(b,a,d,c,16); r_ktr(c,b,a,d,14); r_ktr(d,c,b,a,12);<a name="l00191"></a>00191 r_ktr(a,d,c,b,10); r_ktr(b,a,d,c, 8); r_ktr(c,b,a,d, 6); r_ktr(d,c,b,a, 4);<a name="l00192"></a>00192 <a name="l00193"></a>00193 <span class="keywordflow">for</span> (i = 0; i < 2; i++) {<a name="l00194"></a>00194 b_mix(a,b,c,d);<a name="l00195"></a>00195 b_mix(b,c,d,a);<a name="l00196"></a>00196 c -= b;<a name="l00197"></a>00197 b_mix(c,d,a,b);<a name="l00198"></a>00198 d -= a;<a name="l00199"></a>00199 b_mix(d,a,b,c);<a name="l00200"></a>00200 }<a name="l00201"></a>00201 <a name="l00202"></a>00202 d -= EK[0];<a name="l00203"></a>00203 c -= EK[1];<a name="l00204"></a>00204 b -= EK[2];<a name="l00205"></a>00205 a -= EK[3];<a name="l00206"></a>00206 <a name="l00207"></a>00207 <a class="code" href="struct_block_get_and_put.html#63d96a17e8118407e02896d0b0f8d92d">Block::Put</a>(xorBlock, outBlock)(d)(c)(b)(a);<a name="l00208"></a>00208 }<a name="l00209"></a>00209 <a name="l00210"></a>00210 NAMESPACE_END</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Fri Jun 1 11:11:22 2007 for Crypto++ by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.2 </small></address></body></html>⌨️ 快捷键说明
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