1150 lines
73 KiB
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y="1161.5687"
|
||
id="tspan2880"> | (bit_reverse[(lfsr0>>16)&0xff]<<8) | bit</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1188.21"
|
||
id="tspan2882" /><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1214.8513"
|
||
id="tspan2884"> sec+=0x80;</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1241.4927"
|
||
id="tspan2886"> combined = 0;</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1268.134"
|
||
id="tspan2888"> while (sec != end) {</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1294.7753"
|
||
id="tspan2890"> o_lfsr1 = lfsr1_bits0[lfsr1_hi] ^ lfsr1_bit</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1321.4166"
|
||
id="tspan2892"> lfsr1_hi = lfsr1_lo>>1;</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1348.058"
|
||
id="tspan2894"> lfsr1_lo = ((lfsr1_lo&1)<<8) ^ o_lfsr1;</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1374.6993"
|
||
id="tspan2896"> o_lfsr1 = bit_reverse[o_lfsr1];</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1401.3406"
|
||
id="tspan2898" /><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1427.9819"
|
||
id="tspan2900"> /*o_lfsr0 = (lfsr0>>7)^(lfsr0>>10)^(lfsr0>>1</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1454.6232"
|
||
id="tspan2902"> o_lfsr0 = (((((((lfsr0>>8)^lfsr0)>>1)^lfsr0)</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1481.2646"
|
||
id="tspan2904"> lfsr0 = (lfsr0>>8)|(o_lfsr0<<24);</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1507.9059"
|
||
id="tspan2906" /><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1534.5472"
|
||
id="tspan2908"> combined += o_lfsr0 + (byte)~o_lfsr1;</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1561.1885"
|
||
id="tspan2910"> *sec++ = csstab1[*sec] ^ (combined&0xff);</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1587.8298"
|
||
id="tspan2912"> combined >>= 8;</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1614.4712"
|
||
id="tspan2914"> }</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="1187.2379"
|
||
y="1641.1125"
|
||
id="tspan2916">}</tspan></text>
|
||
<text
|
||
transform="matrix(0.9102714,-0.3959484,0,1.0985735,0,0)"
|
||
sodipodi:linespacing="120%"
|
||
id="text2918"
|
||
y="1066.3475"
|
||
x="1810.0511"
|
||
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"
|
||
xml:space="preserve"><tspan
|
||
y="1066.3475"
|
||
x="1810.0511"
|
||
id="tspan2920"
|
||
sodipodi:role="line">void css_descramble(byte *sec,byte *key)</tspan><tspan
|
||
id="tspan2922"
|
||
y="1092.9889"
|
||
x="1810.0511"
|
||
sodipodi:role="line">{</tspan><tspan
|
||
id="tspan2924"
|
||
y="1119.6302"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> unsigned int lfsr1_lo,lfsr1_hi,lfsr0,combined;</tspan><tspan
|
||
id="tspan2926"
|
||
y="1146.2715"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> unsigned char o_lfsr0, o_lfsr1;</tspan><tspan
|
||
id="tspan2928"
|
||
y="1172.9128"
|
||
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) << 17) | (SALTED(3) << 9)</tspan><tspan
|
||
id="tspan2942"
|
||
y="1359.4021"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> lfsr0 = (bit_reverse[lfsr0&0xff]<<24) | (bit_</tspan><tspan
|
||
id="tspan2944"
|
||
y="1386.0434"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> | (bit_reverse[(lfsr0>>16)&0xff]<<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>>1;</tspan><tspan
|
||
id="tspan2958"
|
||
y="1572.5326"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> lfsr1_lo = ((lfsr1_lo&1)<<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>>7)^(lfsr0>>10)^(lfsr0>>1</tspan><tspan
|
||
id="tspan2966"
|
||
y="1679.0979"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> o_lfsr0 = (((((((lfsr0>>8)^lfsr0)>>1)^lfsr0)</tspan><tspan
|
||
id="tspan2968"
|
||
y="1705.7392"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> lfsr0 = (lfsr0>>8)|(o_lfsr0<<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&0xff);</tspan><tspan
|
||
id="tspan2976"
|
||
y="1812.3045"
|
||
x="1810.0511"
|
||
sodipodi:role="line"> combined >>= 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"
|
||
x="2432.8645"
|
||
y="1290.8223"
|
||
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) << 17) | (SALTED(3) << 9)</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="2432.8645"
|
||
y="1583.8768"
|
||
id="tspan3006"> lfsr0 = (bit_reverse[lfsr0&0xff]<<24) | (bit_</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="2432.8645"
|
||
y="1610.5181"
|
||
id="tspan3008"> | (bit_reverse[(lfsr0>>16)&0xff]<<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>>1;</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="2432.8645"
|
||
y="1797.0074"
|
||
id="tspan3022"> lfsr1_lo = ((lfsr1_lo&1)<<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>>7)^(lfsr0>>10)^(lfsr0>>1</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="2432.8645"
|
||
y="1903.5726"
|
||
id="tspan3030"> o_lfsr0 = (((((((lfsr0>>8)^lfsr0)>>1)^lfsr0)</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="2432.8645"
|
||
y="1930.214"
|
||
id="tspan3032"> lfsr0 = (lfsr0>>8)|(o_lfsr0<<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&0xff);</tspan><tspan
|
||
sodipodi:role="line"
|
||
x="2432.8645"
|
||
y="2036.7792"
|
||
id="tspan3040"> combined >>= 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>
|
||
</g>
|
||
</g>
|
||
<g
|
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inkscape:groupmode="layer"
|
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id="layer4"
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inkscape:label="Boites"
|
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transform="translate(-3.1994629e-7,10.629943)"
|
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style="display:inline">
|
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<rect
|
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|
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x="162.99213"
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height="145.27559"
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|
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id="rect4239"
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style="font-size:48px;font-style:normal;font-variant:normal;font-weight:bold;font-stretch:condensed;text-align:center;line-height:100%;writing-mode:lr-tb;text-anchor:middle;opacity:0.9;fill:#ffffff;fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:4.5;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;font-family:DejaVu Serif" />
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style="opacity:0.9;fill:#ffffff;fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:4.5;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
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id="rect2390"
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style="font-size:45.33333206px;font-style:normal;font-variant:normal;font-weight:bold;font-stretch:condensed;text-align:start;line-height:100%;writing-mode:lr-tb;text-anchor:start;opacity:0.9;fill:#2b5385;fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:1.75999999;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;font-family:DejaVu Sans" />
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<path
|
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sodipodi:type="arc"
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style="fill:#2b5385;fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:1.75999999;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
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id="path3601"
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sodipodi:cx="90.234375"
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sodipodi:cy="1008.6952"
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sodipodi:rx="35.15625"
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sodipodi:ry="35.546875"
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<text
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id="tspan2488">http://www.expolibre.org/</tspan> ‒ Copyright 2008 <tspan
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style="font-weight:bold;fill:#000000;fill-opacity:1"
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id="tspan4567">April</tspan> ‒ Sous licence <tspan
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style="font-weight:bold;fill:#000000;fill-opacity:1"
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id="tspan4569">CC</tspan>-BY-SA : Parternité - Partage des Conditions Initiales à l'Identique</tspan></text>
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style="font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:condensed;text-align:justify;line-height:110.00000238%;writing-mode:lr-tb;text-anchor:start;font-family:DejaVu Sans"
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id="flowPara2767">Le premier programme GNU fut écrit par R. Stallman lui-même : c'était <flowSpan
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id="flowSpan4249">Emacs</flowSpan>, un éditeur de texte libre, indispensable pour créer tous les autres logiciels libres. C'est aujourd'hui un outil massivement utilisé chez les développeurs.</flowPara><flowPara
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id="flowPara4251" /><flowPara
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id="flowPara4253">De nombreux autres outils (compilateurs, éditeurs de textes, logiciels de courrier, etc) virent ensuite le jour dans le cadre de ce projet GNU, mais aussi <flowSpan
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id="flowSpan4255">en dehors</flowSpan>, avec la participation de personnes du <flowSpan
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id="flowSpan4263">cœur</flowSpan> du système – le noyau nommé HURD – piétinait, un jeune étudiant finlandais, <flowSpan
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id="flowSpan2427">Linus Torvalds</flowSpan>, créait en 1991 un noyau de type Unix pour les PC, qu'il décide de distribuer sous licence <flowSpan
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id="flowSpan4315">combinaison</flowSpan> de Linux avec l'ensemble des éléments libres déjà réalisés forme un <flowSpan
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style="font-weight:bold"
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id="flowSpan4317">système complet</flowSpan> sous licence libre de <flowSpan
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style="font-weight:bold"
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id="flowSpan4305">aucun</flowSpan> d'entre eux n'était un logiciel libre : il fallait signer un accord de <flowSpan
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style="font-weight:bold"
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id="flowSpan4311">interdisait</flowSpan> toute communauté <flowSpan
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style="font-weight:bold"
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id="flowSpan4313">coopérative</flowSpan>. Dès lors, on voit évidemment qu'un petit mais puissant groupe d'entreprises dominerait l'informatique.</flowPara><flowPara
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id="flowPara4061" /><flowPara
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id="flowPara2561"><flowSpan
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x="629.71228"
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sodipodi:role="line"
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<flowRoot
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id="flowSpan4412">pas fourni</flowSpan> à la livraison. Richard Stallman entend parler d'un laboratoire qui possède les sources de ce pilote. Il s'y rend... et s'entend répondre que le laboratoire s'est <flowSpan
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style="font-weight:bold"
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id="flowSpan4416">engagé</flowSpan> à ne <flowSpan
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style="font-weight:bold"
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id="flowSpan4472">GNU GPL</flowSpan>, pour <flowSpan
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id="flowSpan4490">garantissent</flowSpan> les <flowSpan
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