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<div class="title">ttmac.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// ttmac.cpp - written and placed in the public domain by Kevin Springle</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="preprocessor">#include "pch.h"</span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "ttmac.h"</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include "misc.h"</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 NAMESPACE_BEGIN(CryptoPP)
<a name="l00008"></a>00008
<a name="l00009"></a>00009 void <a class="code" href="class_t_t_m_a_c___base.html" title="_">TTMAC_Base</a>::UncheckedSetKey(const byte *userKey, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> keylength, const <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &)
<a name="l00010"></a>00010 {
<a name="l00011"></a>00011 AssertValidKeyLength(keylength);
<a name="l00012"></a>00012
<a name="l00013"></a>00013 memcpy(m_key, userKey, KEYLENGTH);
<a name="l00014"></a>00014 CorrectEndianess(m_key, m_key, KEYLENGTH);
<a name="l00015"></a>00015
<a name="l00016"></a>00016 Init();
<a name="l00017"></a>00017 }
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="keywordtype">void</span> TTMAC_Base::Init()
<a name="l00020"></a>00020 {
<a name="l00021"></a>00021 m_digest[0] = m_digest[5] = m_key[0];
<a name="l00022"></a>00022 m_digest[1] = m_digest[6] = m_key[1];
<a name="l00023"></a>00023 m_digest[2] = m_digest[7] = m_key[2];
<a name="l00024"></a>00024 m_digest[3] = m_digest[8] = m_key[3];
<a name="l00025"></a>00025 m_digest[4] = m_digest[9] = m_key[4];
<a name="l00026"></a>00026 }
<a name="l00027"></a>00027
<a name="l00028"></a><a class="code" href="class_t_t_m_a_c___base.html#a52333eb53e716948e9377cdfea28addd">00028</a> <span class="keywordtype">void</span> <a class="code" href="class_t_t_m_a_c___base.html#a52333eb53e716948e9377cdfea28addd" title="truncated version of Final()">TTMAC_Base::TruncatedFinal</a>(byte *hash, <span class="keywordtype">size_t</span> size)
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 PadLastBlock(BlockSize() - 2*<span class="keyword">sizeof</span>(HashWordType));
<a name="l00031"></a>00031 CorrectEndianess(m_data, m_data, BlockSize() - 2*<span class="keyword">sizeof</span>(HashWordType));
<a name="l00032"></a>00032
<a name="l00033"></a>00033 m_data[m_data.size()-2] = GetBitCountLo();
<a name="l00034"></a>00034 m_data[m_data.size()-1] = GetBitCountHi();
<a name="l00035"></a>00035
<a name="l00036"></a>00036 Transform(m_digest, m_data, <span class="keyword">true</span>);
<a name="l00037"></a>00037
<a name="l00038"></a>00038 word32 t2 = m_digest[2];
<a name="l00039"></a>00039 word32 t3 = m_digest[3];
<a name="l00040"></a>00040 <span class="keywordflow">if</span> (size != DIGESTSIZE)
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="keywordflow">switch</span> (size)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="keywordflow">case</span> 16:
<a name="l00045"></a>00045 m_digest[3] += m_digest[1] + m_digest[4];
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keywordflow">case</span> 12:
<a name="l00048"></a>00048 m_digest[2] += m_digest[0] + t3;
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="keywordflow">case</span> 8:
<a name="l00051"></a>00051 m_digest[0] += m_digest[1] + t3;
<a name="l00052"></a>00052 m_digest[1] += m_digest[4] + t2;
<a name="l00053"></a>00053 <span class="keywordflow">break</span>;
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keywordflow">case</span> 4:
<a name="l00056"></a>00056 m_digest[0] +=
<a name="l00057"></a>00057 m_digest[1] +
<a name="l00058"></a>00058 m_digest[2] +
<a name="l00059"></a>00059 m_digest[3] +
<a name="l00060"></a>00060 m_digest[4];
<a name="l00061"></a>00061 <span class="keywordflow">break</span>;
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keywordflow">case</span> 0:
<a name="l00064"></a>00064 <span class="comment">// Used by HashTransformation::Restart()</span>
<a name="l00065"></a>00065 <span class="keywordflow">break</span>;
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keywordflow">default</span>:
<a name="l00068"></a>00068 <span class="keywordflow">throw</span> <a class="code" href="class_invalid_argument.html" title="exception thrown when an invalid argument is detected">InvalidArgument</a>(<span class="stringliteral">"TTMAC_Base: can't truncate a Two-Track-MAC 20 byte digest to "</span> + IntToString(size) + <span class="stringliteral">" bytes"</span>);
<a name="l00069"></a>00069 <span class="keywordflow">break</span>;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 CorrectEndianess(m_digest, m_digest, size);
<a name="l00074"></a>00074 memcpy(hash, m_digest, size);
<a name="l00075"></a>00075
<a name="l00076"></a>00076 Restart(); <span class="comment">// reinit for next use</span>
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">// RIPEMD-160 definitions used by Two-Track-MAC</span>
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="preprocessor">#define F(x, y, z) (x ^ y ^ z)</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span><span class="preprocessor">#define G(x, y, z) (z ^ (x & (y^z)))</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span><span class="preprocessor">#define H(x, y, z) (z ^ (x | ~y))</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span><span class="preprocessor">#define I(x, y, z) (y ^ (z & (x^y)))</span>
<a name="l00085"></a>00085 <span class="preprocessor"></span><span class="preprocessor">#define J(x, y, z) (x ^ (y | ~z))</span>
<a name="l00086"></a>00086 <span class="preprocessor"></span>
<a name="l00087"></a>00087 <span class="preprocessor">#define k0 0</span>
<a name="l00088"></a>00088 <span class="preprocessor"></span><span class="preprocessor">#define k1 0x5a827999UL</span>
<a name="l00089"></a>00089 <span class="preprocessor"></span><span class="preprocessor">#define k2 0x6ed9eba1UL</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span><span class="preprocessor">#define k3 0x8f1bbcdcUL</span>
<a name="l00091"></a>00091 <span class="preprocessor"></span><span class="preprocessor">#define k4 0xa953fd4eUL</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span><span class="preprocessor">#define k5 0x50a28be6UL</span>
<a name="l00093"></a>00093 <span class="preprocessor"></span><span class="preprocessor">#define k6 0x5c4dd124UL</span>
<a name="l00094"></a>00094 <span class="preprocessor"></span><span class="preprocessor">#define k7 0x6d703ef3UL</span>
<a name="l00095"></a>00095 <span class="preprocessor"></span><span class="preprocessor">#define k8 0x7a6d76e9UL</span>
<a name="l00096"></a>00096 <span class="preprocessor"></span><span class="preprocessor">#define k9 0</span>
<a name="l00097"></a>00097 <span class="preprocessor"></span>
<a name="l00098"></a>00098 <span class="keywordtype">void</span> TTMAC_Base::Transform(word32 *digest, <span class="keyword">const</span> word32 *X, <span class="keywordtype">bool</span> last)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 <span class="preprocessor">#define Subround(f, a, b, c, d, e, x, s, k) \</span>
<a name="l00101"></a>00101 <span class="preprocessor"> a += f(b, c, d) + x + k;\</span>
<a name="l00102"></a>00102 <span class="preprocessor"> a = rotlFixed((word32)a, s) + e;\</span>
<a name="l00103"></a>00103 <span class="preprocessor"> c = rotlFixed((word32)c, 10U)</span>
<a name="l00104"></a>00104 <span class="preprocessor"></span>
<a name="l00105"></a>00105 word32 a1, b1, c1, d1, e1, a2, b2, c2, d2, e2;
<a name="l00106"></a>00106 word32 *trackA, *trackB;
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keywordflow">if</span> (!last)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 trackA = digest;
<a name="l00111"></a>00111 trackB = digest+5;
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113 <span class="keywordflow">else</span>
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 trackB = digest;
<a name="l00116"></a>00116 trackA = digest+5;
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 a1 = trackA[0];
<a name="l00119"></a>00119 b1 = trackA[1];
<a name="l00120"></a>00120 c1 = trackA[2];
<a name="l00121"></a>00121 d1 = trackA[3];
<a name="l00122"></a>00122 e1 = trackA[4];
<a name="l00123"></a>00123 a2 = trackB[0];
<a name="l00124"></a>00124 b2 = trackB[1];
<a name="l00125"></a>00125 c2 = trackB[2];
<a name="l00126"></a>00126 d2 = trackB[3];
<a name="l00127"></a>00127 e2 = trackB[4];
<a name="l00128"></a>00128
<a name="l00129"></a>00129 Subround(F, a1, b1, c1, d1, e1, X[ 0], 11, k0);
<a name="l00130"></a>00130 Subround(F, e1, a1, b1, c1, d1, X[ 1], 14, k0);
<a name="l00131"></a>00131 Subround(F, d1, e1, a1, b1, c1, X[ 2], 15, k0);
<a name="l00132"></a>00132 Subround(F, c1, d1, e1, a1, b1, X[ 3], 12, k0);
<a name="l00133"></a>00133 Subround(F, b1, c1, d1, e1, a1, X[ 4], 5, k0);
<a name="l00134"></a>00134 Subround(F, a1, b1, c1, d1, e1, X[ 5], 8, k0);
<a name="l00135"></a>00135 Subround(F, e1, a1, b1, c1, d1, X[ 6], 7, k0);
<a name="l00136"></a>00136 Subround(F, d1, e1, a1, b1, c1, X[ 7], 9, k0);
<a name="l00137"></a>00137 Subround(F, c1, d1, e1, a1, b1, X[ 8], 11, k0);
<a name="l00138"></a>00138 Subround(F, b1, c1, d1, e1, a1, X[ 9], 13, k0);
<a name="l00139"></a>00139 Subround(F, a1, b1, c1, d1, e1, X[10], 14, k0);
<a name="l00140"></a>00140 Subround(F, e1, a1, b1, c1, d1, X[11], 15, k0);
<a name="l00141"></a>00141 Subround(F, d1, e1, a1, b1, c1, X[12], 6, k0);
<a name="l00142"></a>00142 Subround(F, c1, d1, e1, a1, b1, X[13], 7, k0);
<a name="l00143"></a>00143 Subround(F, b1, c1, d1, e1, a1, X[14], 9, k0);
<a name="l00144"></a>00144 Subround(F, a1, b1, c1, d1, e1, X[15], 8, k0);
<a name="l00145"></a>00145
<a name="l00146"></a>00146 Subround(G, e1, a1, b1, c1, d1, X[ 7], 7, k1);
<a name="l00147"></a>00147 Subround(G, d1, e1, a1, b1, c1, X[ 4], 6, k1);
<a name="l00148"></a>00148 Subround(G, c1, d1, e1, a1, b1, X[13], 8, k1);
<a name="l00149"></a>00149 Subround(G, b1, c1, d1, e1, a1, X[ 1], 13, k1);
<a name="l00150"></a>00150 Subround(G, a1, b1, c1, d1, e1, X[10], 11, k1);
<a name="l00151"></a>00151 Subround(G, e1, a1, b1, c1, d1, X[ 6], 9, k1);
<a name="l00152"></a>00152 Subround(G, d1, e1, a1, b1, c1, X[15], 7, k1);
<a name="l00153"></a>00153 Subround(G, c1, d1, e1, a1, b1, X[ 3], 15, k1);
<a name="l00154"></a>00154 Subround(G, b1, c1, d1, e1, a1, X[12], 7, k1);
<a name="l00155"></a>00155 Subround(G, a1, b1, c1, d1, e1, X[ 0], 12, k1);
<a name="l00156"></a>00156 Subround(G, e1, a1, b1, c1, d1, X[ 9], 15, k1);
<a name="l00157"></a>00157 Subround(G, d1, e1, a1, b1, c1, X[ 5], 9, k1);
<a name="l00158"></a>00158 Subround(G, c1, d1, e1, a1, b1, X[ 2], 11, k1);
<a name="l00159"></a>00159 Subround(G, b1, c1, d1, e1, a1, X[14], 7, k1);
<a name="l00160"></a>00160 Subround(G, a1, b1, c1, d1, e1, X[11], 13, k1);
<a name="l00161"></a>00161 Subround(G, e1, a1, b1, c1, d1, X[ 8], 12, k1);
<a name="l00162"></a>00162
<a name="l00163"></a>00163 Subround(H, d1, e1, a1, b1, c1, X[ 3], 11, k2);
<a name="l00164"></a>00164 Subround(H, c1, d1, e1, a1, b1, X[10], 13, k2);
<a name="l00165"></a>00165 Subround(H, b1, c1, d1, e1, a1, X[14], 6, k2);
<a name="l00166"></a>00166 Subround(H, a1, b1, c1, d1, e1, X[ 4], 7, k2);
<a name="l00167"></a>00167 Subround(H, e1, a1, b1, c1, d1, X[ 9], 14, k2);
<a name="l00168"></a>00168 Subround(H, d1, e1, a1, b1, c1, X[15], 9, k2);
<a name="l00169"></a>00169 Subround(H, c1, d1, e1, a1, b1, X[ 8], 13, k2);
<a name="l00170"></a>00170 Subround(H, b1, c1, d1, e1, a1, X[ 1], 15, k2);
<a name="l00171"></a>00171 Subround(H, a1, b1, c1, d1, e1, X[ 2], 14, k2);
<a name="l00172"></a>00172 Subround(H, e1, a1, b1, c1, d1, X[ 7], 8, k2);
<a name="l00173"></a>00173 Subround(H, d1, e1, a1, b1, c1, X[ 0], 13, k2);
<a name="l00174"></a>00174 Subround(H, c1, d1, e1, a1, b1, X[ 6], 6, k2);
<a name="l00175"></a>00175 Subround(H, b1, c1, d1, e1, a1, X[13], 5, k2);
<a name="l00176"></a>00176 Subround(H, a1, b1, c1, d1, e1, X[11], 12, k2);
<a name="l00177"></a>00177 Subround(H, e1, a1, b1, c1, d1, X[ 5], 7, k2);
<a name="l00178"></a>00178 Subround(H, d1, e1, a1, b1, c1, X[12], 5, k2);
<a name="l00179"></a>00179
<a name="l00180"></a>00180 Subround(I, c1, d1, e1, a1, b1, X[ 1], 11, k3);
<a name="l00181"></a>00181 Subround(I, b1, c1, d1, e1, a1, X[ 9], 12, k3);
<a name="l00182"></a>00182 Subround(I, a1, b1, c1, d1, e1, X[11], 14, k3);
<a name="l00183"></a>00183 Subround(I, e1, a1, b1, c1, d1, X[10], 15, k3);
<a name="l00184"></a>00184 Subround(I, d1, e1, a1, b1, c1, X[ 0], 14, k3);
<a name="l00185"></a>00185 Subround(I, c1, d1, e1, a1, b1, X[ 8], 15, k3);
<a name="l00186"></a>00186 Subround(I, b1, c1, d1, e1, a1, X[12], 9, k3);
<a name="l00187"></a>00187 Subround(I, a1, b1, c1, d1, e1, X[ 4], 8, k3);
<a name="l00188"></a>00188 Subround(I, e1, a1, b1, c1, d1, X[13], 9, k3);
<a name="l00189"></a>00189 Subround(I, d1, e1, a1, b1, c1, X[ 3], 14, k3);
<a name="l00190"></a>00190 Subround(I, c1, d1, e1, a1, b1, X[ 7], 5, k3);
<a name="l00191"></a>00191 Subround(I, b1, c1, d1, e1, a1, X[15], 6, k3);
<a name="l00192"></a>00192 Subround(I, a1, b1, c1, d1, e1, X[14], 8, k3);
<a name="l00193"></a>00193 Subround(I, e1, a1, b1, c1, d1, X[ 5], 6, k3);
<a name="l00194"></a>00194 Subround(I, d1, e1, a1, b1, c1, X[ 6], 5, k3);
<a name="l00195"></a>00195 Subround(I, c1, d1, e1, a1, b1, X[ 2], 12, k3);
<a name="l00196"></a>00196
<a name="l00197"></a>00197 Subround(J, b1, c1, d1, e1, a1, X[ 4], 9, k4);
<a name="l00198"></a>00198 Subround(J, a1, b1, c1, d1, e1, X[ 0], 15, k4);
<a name="l00199"></a>00199 Subround(J, e1, a1, b1, c1, d1, X[ 5], 5, k4);
<a name="l00200"></a>00200 Subround(J, d1, e1, a1, b1, c1, X[ 9], 11, k4);
<a name="l00201"></a>00201 Subround(J, c1, d1, e1, a1, b1, X[ 7], 6, k4);
<a name="l00202"></a>00202 Subround(J, b1, c1, d1, e1, a1, X[12], 8, k4);
<a name="l00203"></a>00203 Subround(J, a1, b1, c1, d1, e1, X[ 2], 13, k4);
<a name="l00204"></a>00204 Subround(J, e1, a1, b1, c1, d1, X[10], 12, k4);
<a name="l00205"></a>00205 Subround(J, d1, e1, a1, b1, c1, X[14], 5, k4);
<a name="l00206"></a>00206 Subround(J, c1, d1, e1, a1, b1, X[ 1], 12, k4);
<a name="l00207"></a>00207 Subround(J, b1, c1, d1, e1, a1, X[ 3], 13, k4);
<a name="l00208"></a>00208 Subround(J, a1, b1, c1, d1, e1, X[ 8], 14, k4);
<a name="l00209"></a>00209 Subround(J, e1, a1, b1, c1, d1, X[11], 11, k4);
<a name="l00210"></a>00210 Subround(J, d1, e1, a1, b1, c1, X[ 6], 8, k4);
<a name="l00211"></a>00211 Subround(J, c1, d1, e1, a1, b1, X[15], 5, k4);
<a name="l00212"></a>00212 Subround(J, b1, c1, d1, e1, a1, X[13], 6, k4);
<a name="l00213"></a>00213
<a name="l00214"></a>00214 Subround(J, a2, b2, c2, d2, e2, X[ 5], 8, k5);
<a name="l00215"></a>00215 Subround(J, e2, a2, b2, c2, d2, X[14], 9, k5);
<a name="l00216"></a>00216 Subround(J, d2, e2, a2, b2, c2, X[ 7], 9, k5);
<a name="l00217"></a>00217 Subround(J, c2, d2, e2, a2, b2, X[ 0], 11, k5);
<a name="l00218"></a>00218 Subround(J, b2, c2, d2, e2, a2, X[ 9], 13, k5);
<a name="l00219"></a>00219 Subround(J, a2, b2, c2, d2, e2, X[ 2], 15, k5);
<a name="l00220"></a>00220 Subround(J, e2, a2, b2, c2, d2, X[11], 15, k5);
<a name="l00221"></a>00221 Subround(J, d2, e2, a2, b2, c2, X[ 4], 5, k5);
<a name="l00222"></a>00222 Subround(J, c2, d2, e2, a2, b2, X[13], 7, k5);
<a name="l00223"></a>00223 Subround(J, b2, c2, d2, e2, a2, X[ 6], 7, k5);
<a name="l00224"></a>00224 Subround(J, a2, b2, c2, d2, e2, X[15], 8, k5);
<a name="l00225"></a>00225 Subround(J, e2, a2, b2, c2, d2, X[ 8], 11, k5);
<a name="l00226"></a>00226 Subround(J, d2, e2, a2, b2, c2, X[ 1], 14, k5);
<a name="l00227"></a>00227 Subround(J, c2, d2, e2, a2, b2, X[10], 14, k5);
<a name="l00228"></a>00228 Subround(J, b2, c2, d2, e2, a2, X[ 3], 12, k5);
<a name="l00229"></a>00229 Subround(J, a2, b2, c2, d2, e2, X[12], 6, k5);
<a name="l00230"></a>00230
<a name="l00231"></a>00231 Subround(I, e2, a2, b2, c2, d2, X[ 6], 9, k6);
<a name="l00232"></a>00232 Subround(I, d2, e2, a2, b2, c2, X[11], 13, k6);
<a name="l00233"></a>00233 Subround(I, c2, d2, e2, a2, b2, X[ 3], 15, k6);
<a name="l00234"></a>00234 Subround(I, b2, c2, d2, e2, a2, X[ 7], 7, k6);
<a name="l00235"></a>00235 Subround(I, a2, b2, c2, d2, e2, X[ 0], 12, k6);
<a name="l00236"></a>00236 Subround(I, e2, a2, b2, c2, d2, X[13], 8, k6);
<a name="l00237"></a>00237 Subround(I, d2, e2, a2, b2, c2, X[ 5], 9, k6);
<a name="l00238"></a>00238 Subround(I, c2, d2, e2, a2, b2, X[10], 11, k6);
<a name="l00239"></a>00239 Subround(I, b2, c2, d2, e2, a2, X[14], 7, k6);
<a name="l00240"></a>00240 Subround(I, a2, b2, c2, d2, e2, X[15], 7, k6);
<a name="l00241"></a>00241 Subround(I, e2, a2, b2, c2, d2, X[ 8], 12, k6);
<a name="l00242"></a>00242 Subround(I, d2, e2, a2, b2, c2, X[12], 7, k6);
<a name="l00243"></a>00243 Subround(I, c2, d2, e2, a2, b2, X[ 4], 6, k6);
<a name="l00244"></a>00244 Subround(I, b2, c2, d2, e2, a2, X[ 9], 15, k6);
<a name="l00245"></a>00245 Subround(I, a2, b2, c2, d2, e2, X[ 1], 13, k6);
<a name="l00246"></a>00246 Subround(I, e2, a2, b2, c2, d2, X[ 2], 11, k6);
<a name="l00247"></a>00247
<a name="l00248"></a>00248 Subround(H, d2, e2, a2, b2, c2, X[15], 9, k7);
<a name="l00249"></a>00249 Subround(H, c2, d2, e2, a2, b2, X[ 5], 7, k7);
<a name="l00250"></a>00250 Subround(H, b2, c2, d2, e2, a2, X[ 1], 15, k7);
<a name="l00251"></a>00251 Subround(H, a2, b2, c2, d2, e2, X[ 3], 11, k7);
<a name="l00252"></a>00252 Subround(H, e2, a2, b2, c2, d2, X[ 7], 8, k7);
<a name="l00253"></a>00253 Subround(H, d2, e2, a2, b2, c2, X[14], 6, k7);
<a name="l00254"></a>00254 Subround(H, c2, d2, e2, a2, b2, X[ 6], 6, k7);
<a name="l00255"></a>00255 Subround(H, b2, c2, d2, e2, a2, X[ 9], 14, k7);
<a name="l00256"></a>00256 Subround(H, a2, b2, c2, d2, e2, X[11], 12, k7);
<a name="l00257"></a>00257 Subround(H, e2, a2, b2, c2, d2, X[ 8], 13, k7);
<a name="l00258"></a>00258 Subround(H, d2, e2, a2, b2, c2, X[12], 5, k7);
<a name="l00259"></a>00259 Subround(H, c2, d2, e2, a2, b2, X[ 2], 14, k7);
<a name="l00260"></a>00260 Subround(H, b2, c2, d2, e2, a2, X[10], 13, k7);
<a name="l00261"></a>00261 Subround(H, a2, b2, c2, d2, e2, X[ 0], 13, k7);
<a name="l00262"></a>00262 Subround(H, e2, a2, b2, c2, d2, X[ 4], 7, k7);
<a name="l00263"></a>00263 Subround(H, d2, e2, a2, b2, c2, X[13], 5, k7);
<a name="l00264"></a>00264
<a name="l00265"></a>00265 Subround(G, c2, d2, e2, a2, b2, X[ 8], 15, k8);
<a name="l00266"></a>00266 Subround(G, b2, c2, d2, e2, a2, X[ 6], 5, k8);
<a name="l00267"></a>00267 Subround(G, a2, b2, c2, d2, e2, X[ 4], 8, k8);
<a name="l00268"></a>00268 Subround(G, e2, a2, b2, c2, d2, X[ 1], 11, k8);
<a name="l00269"></a>00269 Subround(G, d2, e2, a2, b2, c2, X[ 3], 14, k8);
<a name="l00270"></a>00270 Subround(G, c2, d2, e2, a2, b2, X[11], 14, k8);
<a name="l00271"></a>00271 Subround(G, b2, c2, d2, e2, a2, X[15], 6, k8);
<a name="l00272"></a>00272 Subround(G, a2, b2, c2, d2, e2, X[ 0], 14, k8);
<a name="l00273"></a>00273 Subround(G, e2, a2, b2, c2, d2, X[ 5], 6, k8);
<a name="l00274"></a>00274 Subround(G, d2, e2, a2, b2, c2, X[12], 9, k8);
<a name="l00275"></a>00275 Subround(G, c2, d2, e2, a2, b2, X[ 2], 12, k8);
<a name="l00276"></a>00276 Subround(G, b2, c2, d2, e2, a2, X[13], 9, k8);
<a name="l00277"></a>00277 Subround(G, a2, b2, c2, d2, e2, X[ 9], 12, k8);
<a name="l00278"></a>00278 Subround(G, e2, a2, b2, c2, d2, X[ 7], 5, k8);
<a name="l00279"></a>00279 Subround(G, d2, e2, a2, b2, c2, X[10], 15, k8);
<a name="l00280"></a>00280 Subround(G, c2, d2, e2, a2, b2, X[14], 8, k8);
<a name="l00281"></a>00281
<a name="l00282"></a>00282 Subround(F, b2, c2, d2, e2, a2, X[12], 8, k9);
<a name="l00283"></a>00283 Subround(F, a2, b2, c2, d2, e2, X[15], 5, k9);
<a name="l00284"></a>00284 Subround(F, e2, a2, b2, c2, d2, X[10], 12, k9);
<a name="l00285"></a>00285 Subround(F, d2, e2, a2, b2, c2, X[ 4], 9, k9);
<a name="l00286"></a>00286 Subround(F, c2, d2, e2, a2, b2, X[ 1], 12, k9);
<a name="l00287"></a>00287 Subround(F, b2, c2, d2, e2, a2, X[ 5], 5, k9);
<a name="l00288"></a>00288 Subround(F, a2, b2, c2, d2, e2, X[ 8], 14, k9);
<a name="l00289"></a>00289 Subround(F, e2, a2, b2, c2, d2, X[ 7], 6, k9);
<a name="l00290"></a>00290 Subround(F, d2, e2, a2, b2, c2, X[ 6], 8, k9);
<a name="l00291"></a>00291 Subround(F, c2, d2, e2, a2, b2, X[ 2], 13, k9);
<a name="l00292"></a>00292 Subround(F, b2, c2, d2, e2, a2, X[13], 6, k9);
<a name="l00293"></a>00293 Subround(F, a2, b2, c2, d2, e2, X[14], 5, k9);
<a name="l00294"></a>00294 Subround(F, e2, a2, b2, c2, d2, X[ 0], 15, k9);
<a name="l00295"></a>00295 Subround(F, d2, e2, a2, b2, c2, X[ 3], 13, k9);
<a name="l00296"></a>00296 Subround(F, c2, d2, e2, a2, b2, X[ 9], 11, k9);
<a name="l00297"></a>00297 Subround(F, b2, c2, d2, e2, a2, X[11], 11, k9);
<a name="l00298"></a>00298
<a name="l00299"></a>00299 a1 -= trackA[0];
<a name="l00300"></a>00300 b1 -= trackA[1];
<a name="l00301"></a>00301 c1 -= trackA[2];
<a name="l00302"></a>00302 d1 -= trackA[3];
<a name="l00303"></a>00303 e1 -= trackA[4];
<a name="l00304"></a>00304 a2 -= trackB[0];
<a name="l00305"></a>00305 b2 -= trackB[1];
<a name="l00306"></a>00306 c2 -= trackB[2];
<a name="l00307"></a>00307 d2 -= trackB[3];
<a name="l00308"></a>00308 e2 -= trackB[4];
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordflow">if</span> (!last)
<a name="l00311"></a>00311 {
<a name="l00312"></a>00312 trackA[0] = (b1 + e1) - d2;
<a name="l00313"></a>00313 trackA[1] = c1 - e2;
<a name="l00314"></a>00314 trackA[2] = d1 - a2;
<a name="l00315"></a>00315 trackA[3] = e1 - b2;
<a name="l00316"></a>00316 trackA[4] = a1 - c2;
<a name="l00317"></a>00317 trackB[0] = d1 - e2;
<a name="l00318"></a>00318 trackB[1] = (e1 + c1) - a2;
<a name="l00319"></a>00319 trackB[2] = a1 - b2;
<a name="l00320"></a>00320 trackB[3] = b1 - c2;
<a name="l00321"></a>00321 trackB[4] = c1 - d2;
<a name="l00322"></a>00322 }
<a name="l00323"></a>00323 <span class="keywordflow">else</span>
<a name="l00324"></a>00324 {
<a name="l00325"></a>00325 trackB[0] = a2 - a1;
<a name="l00326"></a>00326 trackB[1] = b2 - b1;
<a name="l00327"></a>00327 trackB[2] = c2 - c1;
<a name="l00328"></a>00328 trackB[3] = d2 - d1;
<a name="l00329"></a>00329 trackB[4] = e2 - e1;
<a name="l00330"></a>00330 trackA[0] = 0;
<a name="l00331"></a>00331 trackA[1] = 0;
<a name="l00332"></a>00332 trackA[2] = 0;
<a name="l00333"></a>00333 trackA[3] = 0;
<a name="l00334"></a>00334 trackA[4] = 0;
<a name="l00335"></a>00335 }
<a name="l00336"></a>00336 }
<a name="l00337"></a>00337
<a name="l00338"></a>00338 NAMESPACE_END
</pre></div></div>
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