Expolibre-3-www/htdocs/expolibre-2/archives/v2.0/svg-2.0/expo05.svg
2016-06-24 11:12:10 +02:00

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id="tspan2866">#define SALTED(i) (key[i] ^ sec[0x54 + (i)])</tspan><tspan
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id="tspan2870"> lfsr1_lo = SALTED(0) | 0x100;</tspan><tspan
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id="tspan2872"> lfsr1_hi = SALTED(1);</tspan><tspan
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id="tspan2878"> lfsr0 = (bit_reverse[lfsr0&amp;0xff]&lt;&lt;24) | (bit_</tspan><tspan
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id="tspan2892"> lfsr1_hi = lfsr1_lo&gt;&gt;1;</tspan><tspan
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id="tspan2894"> lfsr1_lo = ((lfsr1_lo&amp;1)&lt;&lt;8) ^ o_lfsr1;</tspan><tspan
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id="tspan2896"> o_lfsr1 = bit_reverse[o_lfsr1];</tspan><tspan
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id="tspan2904"> lfsr0 = (lfsr0&gt;&gt;8)|(o_lfsr0&lt;&lt;24);</tspan><tspan
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id="tspan2910"> *sec++ = csstab1[*sec] ^ (combined&amp;0xff);</tspan><tspan
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id="tspan2912"> combined &gt;&gt;= 8;</tspan><tspan
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id="tspan2914"> }</tspan><tspan
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x="1810.0511"
sodipodi:role="line"> unsigned char *end = sec + 0x800;</tspan><tspan
id="tspan2930"
y="1199.5541"
x="1810.0511"
sodipodi:role="line">#define SALTED(i) (key[i] ^ sec[0x54 + (i)])</tspan><tspan
id="tspan2932"
y="1226.1955"
x="1810.0511"
sodipodi:role="line" /><tspan
id="tspan2934"
y="1252.8368"
x="1810.0511"
sodipodi:role="line"> lfsr1_lo = SALTED(0) | 0x100;</tspan><tspan
id="tspan2936"
y="1279.4781"
x="1810.0511"
sodipodi:role="line"> lfsr1_hi = SALTED(1);</tspan><tspan
id="tspan2938"
y="1306.1194"
x="1810.0511"
sodipodi:role="line" /><tspan
id="tspan2940"
y="1332.7607"
x="1810.0511"
sodipodi:role="line"> lfsr0 = ((SALTED(4) &lt;&lt; 17) | (SALTED(3) &lt;&lt; 9)</tspan><tspan
id="tspan2942"
y="1359.4021"
x="1810.0511"
sodipodi:role="line"> lfsr0 = (bit_reverse[lfsr0&amp;0xff]&lt;&lt;24) | (bit_</tspan><tspan
id="tspan2944"
y="1386.0434"
x="1810.0511"
sodipodi:role="line"> | (bit_reverse[(lfsr0&gt;&gt;16)&amp;0xff]&lt;&lt;8) | bit</tspan><tspan
id="tspan2946"
y="1412.6847"
x="1810.0511"
sodipodi:role="line" /><tspan
id="tspan2948"
y="1439.326"
x="1810.0511"
sodipodi:role="line"> sec+=0x80;</tspan><tspan
id="tspan2950"
y="1465.9673"
x="1810.0511"
sodipodi:role="line"> combined = 0;</tspan><tspan
id="tspan2952"
y="1492.6087"
x="1810.0511"
sodipodi:role="line"> while (sec != end) {</tspan><tspan
id="tspan2954"
y="1519.25"
x="1810.0511"
sodipodi:role="line"> o_lfsr1 = lfsr1_bits0[lfsr1_hi] ^ lfsr1_bit</tspan><tspan
id="tspan2956"
y="1545.8913"
x="1810.0511"
sodipodi:role="line"> lfsr1_hi = lfsr1_lo&gt;&gt;1;</tspan><tspan
id="tspan2958"
y="1572.5326"
x="1810.0511"
sodipodi:role="line"> lfsr1_lo = ((lfsr1_lo&amp;1)&lt;&lt;8) ^ o_lfsr1;</tspan><tspan
id="tspan2960"
y="1599.1739"
x="1810.0511"
sodipodi:role="line"> o_lfsr1 = bit_reverse[o_lfsr1];</tspan><tspan
id="tspan2962"
y="1625.8153"
x="1810.0511"
sodipodi:role="line" /><tspan
id="tspan2964"
y="1652.4566"
x="1810.0511"
sodipodi:role="line"> /*o_lfsr0 = (lfsr0&gt;&gt;7)^(lfsr0&gt;&gt;10)^(lfsr0&gt;&gt;1</tspan><tspan
id="tspan2966"
y="1679.0979"
x="1810.0511"
sodipodi:role="line"> o_lfsr0 = (((((((lfsr0&gt;&gt;8)^lfsr0)&gt;&gt;1)^lfsr0)</tspan><tspan
id="tspan2968"
y="1705.7392"
x="1810.0511"
sodipodi:role="line"> lfsr0 = (lfsr0&gt;&gt;8)|(o_lfsr0&lt;&lt;24);</tspan><tspan
id="tspan2970"
y="1732.3805"
x="1810.0511"
sodipodi:role="line" /><tspan
id="tspan2972"
y="1759.0219"
x="1810.0511"
sodipodi:role="line"> combined += o_lfsr0 + (byte)~o_lfsr1;</tspan><tspan
id="tspan2974"
y="1785.6632"
x="1810.0511"
sodipodi:role="line"> *sec++ = csstab1[*sec] ^ (combined&amp;0xff);</tspan><tspan
id="tspan2976"
y="1812.3045"
x="1810.0511"
sodipodi:role="line"> combined &gt;&gt;= 8;</tspan><tspan
id="tspan2978"
y="1838.9458"
x="1810.0511"
sodipodi:role="line"> }</tspan><tspan
id="tspan2980"
y="1865.5871"
x="1810.0511"
sodipodi:role="line">}</tspan></text>
<text
xml:space="preserve"
style="font-size:22.2010994px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:condensed;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;font-family:DejaVu Sans Mono"
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id="text2982"
sodipodi:linespacing="120%"
transform="matrix(0.9102714,-0.3959484,0,1.0985735,0,0)"><tspan
sodipodi:role="line"
id="tspan2984"
x="2432.8645"
y="1290.8223">void css_descramble(byte *sec,byte *key)</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1317.4636"
id="tspan2986">{</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1344.1049"
id="tspan2988"> unsigned int lfsr1_lo,lfsr1_hi,lfsr0,combined;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1370.7462"
id="tspan2990"> unsigned char o_lfsr0, o_lfsr1;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1397.3875"
id="tspan2992"> unsigned char *end = sec + 0x800;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1424.0289"
id="tspan2994">#define SALTED(i) (key[i] ^ sec[0x54 + (i)])</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1450.6702"
id="tspan2996" /><tspan
sodipodi:role="line"
x="2432.8645"
y="1477.3115"
id="tspan2998"> lfsr1_lo = SALTED(0) | 0x100;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1503.9528"
id="tspan3000"> lfsr1_hi = SALTED(1);</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1530.5941"
id="tspan3002" /><tspan
sodipodi:role="line"
x="2432.8645"
y="1557.2355"
id="tspan3004"> lfsr0 = ((SALTED(4) &lt;&lt; 17) | (SALTED(3) &lt;&lt; 9)</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1583.8768"
id="tspan3006"> lfsr0 = (bit_reverse[lfsr0&amp;0xff]&lt;&lt;24) | (bit_</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1610.5181"
id="tspan3008"> | (bit_reverse[(lfsr0&gt;&gt;16)&amp;0xff]&lt;&lt;8) | bit</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1637.1594"
id="tspan3010" /><tspan
sodipodi:role="line"
x="2432.8645"
y="1663.8008"
id="tspan3012"> sec+=0x80;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1690.4421"
id="tspan3014"> combined = 0;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1717.0834"
id="tspan3016"> while (sec != end) {</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1743.7247"
id="tspan3018"> o_lfsr1 = lfsr1_bits0[lfsr1_hi] ^ lfsr1_bit</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1770.366"
id="tspan3020"> lfsr1_hi = lfsr1_lo&gt;&gt;1;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1797.0074"
id="tspan3022"> lfsr1_lo = ((lfsr1_lo&amp;1)&lt;&lt;8) ^ o_lfsr1;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1823.6487"
id="tspan3024"> o_lfsr1 = bit_reverse[o_lfsr1];</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1850.29"
id="tspan3026" /><tspan
sodipodi:role="line"
x="2432.8645"
y="1876.9313"
id="tspan3028"> /*o_lfsr0 = (lfsr0&gt;&gt;7)^(lfsr0&gt;&gt;10)^(lfsr0&gt;&gt;1</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1903.5726"
id="tspan3030"> o_lfsr0 = (((((((lfsr0&gt;&gt;8)^lfsr0)&gt;&gt;1)^lfsr0)</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1930.214"
id="tspan3032"> lfsr0 = (lfsr0&gt;&gt;8)|(o_lfsr0&lt;&lt;24);</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="1956.8553"
id="tspan3034" /><tspan
sodipodi:role="line"
x="2432.8645"
y="1983.4966"
id="tspan3036"> combined += o_lfsr0 + (byte)~o_lfsr1;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="2010.1379"
id="tspan3038"> *sec++ = csstab1[*sec] ^ (combined&amp;0xff);</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="2036.7792"
id="tspan3040"> combined &gt;&gt;= 8;</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="2063.4206"
id="tspan3042"> }</tspan><tspan
sodipodi:role="line"
x="2432.8645"
y="2090.0619"
id="tspan3044">}</tspan></text>
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