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<div class=Section1>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><span
style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><span
style='mso-ansi-language:IN'>Decryption Core<o:p></o:p></span></b></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><span
style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><i style='mso-bidi-font-style:
normal'><u><span style='font-family:Verdana;mso-ansi-language:IN'>introduction<o:p></o:p></span></u></i></b></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'>The
AES (Rijndael)* Block Cipher<span style='mso-spacerun:yes'> </span>(</span></b><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'>*AES
and Rijndael Can be use interchangeable)</span><span style='color:black;
mso-ansi-language:IN'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'><span
style='mso-spacerun:yes'> </span><span style='mso-tab-count:1'> </span>The
AES (Rijndael)<span style='mso-spacerun:yes'> </span>block cipher is designed
to use simple whole-byte operations. AES algorithm can support length of<span
style='mso-spacerun:yes'> </span>key and block sizes of 128, 192, or 256 bits.
Choosing length of key and block size would impact to the number of the round. <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'><span
style='mso-tab-count:1'> </span>AES (Rijndael) consist of several
round transformation , transformation can be divided into three main round :
initial round , nine round transformation (rounds) and final round that
performed at the end of process(encryption /decryption).<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'><span
style='mso-tab-count:1'> </span>For decryption core that will be
designed, initial round composed of three transformations :<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo3;tab-stops:list 36.0pt'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;
mso-bidi-font-family:Wingdings;color:black;mso-ansi-language:IN'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:Arial;
color:black;mso-ansi-language:IN'>Add_Round_Key Transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo3;tab-stops:list 36.0pt'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;
mso-bidi-font-family:Wingdings;color:black;mso-ansi-language:IN'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:Arial;
color:black;mso-ansi-language:IN'>Invers Byte_Sub Transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo3;tab-stops:list 36.0pt'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;
mso-bidi-font-family:Wingdings;color:black;mso-ansi-language:IN'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:Arial;
color:black;mso-ansi-language:IN'>Invers Shift_Row Transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'>And
for nine round transformation composed of four transformation such as:<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt;text-indent:-18.0pt;mso-list:l4 level1 lfo4;tab-stops:list 36.0pt'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;
mso-bidi-font-family:Wingdings;color:black;mso-ansi-language:IN'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:Arial;
color:black;mso-ansi-language:IN'>Add_Round_Key Transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt;text-indent:-18.0pt;mso-list:l4 level1 lfo4;tab-stops:list 36.0pt'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;
mso-bidi-font-family:Wingdings;color:black;mso-ansi-language:IN'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:Arial;
color:black;mso-ansi-language:IN'>Invers Mix_Column Transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt;text-indent:-18.0pt;mso-list:l4 level1 lfo4;tab-stops:list 36.0pt'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;
mso-bidi-font-family:Wingdings;color:black;mso-ansi-language:IN'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:Arial;
color:black;mso-ansi-language:IN'>Invers Byte_Sub Transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt;text-indent:-18.0pt;mso-list:l4 level1 lfo4;tab-stops:list 36.0pt'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;
mso-bidi-font-family:Wingdings;color:black;mso-ansi-language:IN'><span
style='mso-list:Ignore'>Ø<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:Arial;
color:black;mso-ansi-language:IN'>INvers Shift-Row Transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'>For
the final round or at the end of decryption process just held Add_Round_Key
transformation<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b
style='mso-bidi-font-weight:normal'><span style='font-size:10.0pt;font-family:
Arial;color:black;mso-ansi-language:IN'>Description of each transformation</span></b><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-ansi-language:IN'>.<o:p></o:p></span></p>
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<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l5 level1 lfo5;tab-stops:list 36.0pt'><em><span lang=EN-US
style='font-size:9.0pt'>Byte substitution. </span></em><span lang=EN-US
style='font-size:9.0pt;font-family:Verdana'>Each 8-bit byte in the <i
style='mso-bidi-font-style:normal'>state</i> is reversibly mapped into
another byte (S-box).<span style='mso-spacerun:yes'> </span>For inverse <i
style='mso-bidi-font-style:normal'>Byte substitution </i>each 8-bit byte
in the state mapped into another byte (inverse S-box).<o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l5 level1 lfo5;tab-stops:list 36.0pt'><em><span lang=EN-US
style='font-size:9.0pt'>Shift-row. </span></em><span lang=EN-US
style='font-size:9.0pt;font-family:Verdana'>Row 0 is <span class=GramE>unmoved,</span>
Row 1, Row 2 and Row 3 are rotated left 1, 2 and 3 bytes respectively. For
<i style='mso-bidi-font-style:normal'>inverse Shift-Row</i> Row 0 is <span
class=GramE>unmoved .</span> row1, row 2, and row 3 are rotated left 3,2,1
byte respectively<span style='mso-spacerun:yes'> </span><o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l5 level1 lfo5;tab-stops:list 36.0pt'><em><span lang=EN-US
style='font-size:9.0pt'>Mix-column. </span></em><span lang=EN-US
style='font-size:9.0pt;font-family:Verdana'>Each column is regarded as a
degree-3 polynomial over <span class=GramE>GF(</span>2**8), and multiplied
by the polynomial p(x) ='03'x**3 + '01'x**2 + '01'x + '02', modulo (x**4 +
1). For <i style='mso-bidi-font-style:normal'>inverse mix-column is
reverse of mix-column transformation and multiplied by polynomial that have
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt'><i style='mso-bidi-font-style:normal'><span lang=PT-BR
style='font-size:9.0pt;font-family:Verdana;mso-ansi-language:PT-BR'>d(x) = </span></i><span
lang=PT-BR style='font-size:9.0pt;font-family:Verdana;mso-ansi-language:PT-BR'>'0b'x**3
+ '0d'x**2 + '09'x + '0e'<i style='mso-bidi-font-style:normal'> </i><o:p></o:p></span></p>
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<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l5 level1 lfo5;tab-stops:list 36.0pt'><em><span lang=EN-US
style='font-size:9.0pt'>Sub-key addition. </span></em><span lang=EN-US
style='font-size:9.0pt;font-family:Verdana'>The sub-key for the current
round is <span class=SpellE>XORed</span> into the state. <o:p></o:p></span></li>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt;text-indent:18.0pt'><em><span lang=EN-US style='font-size:
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margin-left:18.0pt;text-indent:18.0pt'><em><span lang=EN-US style='font-size:
9.0pt;font-style:normal;mso-bidi-font-style:italic'><o:p> </o:p></span></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><em><b style='mso-bidi-font-weight:normal'><span
lang=EN-US style='font-size:9.0pt;font-style:normal;mso-bidi-font-style:italic'>The
Key Schedule<o:p></o:p></span></b></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt;text-indent:18.0pt'><em><span lang=EN-US style='font-size:
9.0pt;font-style:normal;mso-bidi-font-style:italic'>Decryption process in AES <span
class=GramE>algorithm ,each</span> sub-key that used in <span class=SpellE>add_Round_Key</span>
transformation was generated in reverse order to the encryption process.
Because each sub-key composed of four Array <b style='mso-bidi-font-weight:
normal'>W, </b>the role to generated each byte in <span class=GramE><b
style='mso-bidi-font-weight:normal'>W <span style='mso-spacerun:yes'> </span></b>describe</span>
below:<o:p></o:p></span></em></p>
<p class=MsoNormal style='text-align:justify;text-indent:18.0pt;line-height:
150%'><span style='font-size:10.0pt;line-height:150%;mso-ansi-language:IN'>For<span
style='mso-spacerun:yes'> </span><b style='mso-bidi-font-weight:normal'>(i
+1)/4<span style='mso-spacerun:yes'> </span><sub><!--[if gte vml 1]><v:shape
id="_x0000_i1027" type="#_x0000_t75" style='width:11.25pt;height:11.25pt'
o:ole="">
<v:imagedata src="dekrip_files/image003.wmz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=15 height=15
src="dekrip_files/image004.gif" v:shapes="_x0000_i1027"><![endif]></sub><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1027"
DrawAspect="Content" ObjectID="_1086960051">
</o:OLEObject>
</xml><![endif]--><span style='mso-spacerun:yes'> </span>0</b><span
style='mso-spacerun:yes'> </span>so<span style='mso-spacerun:yes'> </span><b
style='mso-bidi-font-weight:normal'>W[i] = W[i-4] </b><i style='mso-bidi-font-style:
normal'>xor</i><b style='mso-bidi-font-weight:normal'> W[i-3]<o:p></o:p></b></span></p>
<p class=MsoNormal style='text-align:justify;text-indent:18.0pt;line-height:
150%'><span style='font-size:10.0pt;line-height:150%;mso-ansi-language:IN'>For<span
style='mso-spacerun:yes'> </span><b style='mso-bidi-font-weight:normal'><span
style='mso-spacerun:yes'> </span>(i+1)/4 = 0 <span
style='mso-spacerun:yes'> </span></b>so:<o:p></o:p></span></p>
<p class=MsoNormal style='text-align:justify;text-indent:36.0pt;line-height:
150%'><b style='mso-bidi-font-weight:normal'><span style='font-size:10.0pt;
line-height:150%;mso-ansi-language:IN'>W[i]= W[i-4] <i style='mso-bidi-font-style:
normal'>xor</i> ByteSub(S1 (W[i-6] </span></b><i style='mso-bidi-font-style:
normal'><span style='font-size:10.0pt;line-height:150%;mso-ansi-language:IN'>xor</span></i><b
style='mso-bidi-font-weight:normal'><span style='font-size:10.0pt;line-height:
150%;mso-ansi-language:IN'> W[i-7]))<span style='mso-spacerun:yes'> </span></span></b><i
style='mso-bidi-font-style:normal'><span style='font-size:10.0pt;line-height:
150%;mso-ansi-language:IN'>xor</span></i><b style='mso-bidi-font-weight:normal'><span
style='font-size:10.0pt;line-height:150%;mso-ansi-language:IN'> (rcon[9-round]&’000000’)<o:p></o:p></span></b></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><u><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt'>Specification of the design<o:p></o:p></span></u></b></em></p>
<table class=MsoTableGrid border=1 cellspacing=0 cellpadding=0
style='margin-left:32.4pt;border-collapse:collapse;border:none;mso-border-alt:
solid windowtext .5pt;mso-yfti-tbllook:480;mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-border-insideh:.5pt solid windowtext;mso-border-insidev:.5pt solid windowtext'>
<tr style='mso-yfti-irow:0'>
<td width=324 valign=top style='width:243.0pt;border:solid windowtext 1.0pt;
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>Specification<o:p></o:p></span></b></em></p>
</td>
<td width=168 valign=top style='width:126.0pt;border:solid windowtext 1.0pt;
border-left:none;mso-border-left-alt:solid windowtext .5pt;mso-border-alt:
solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'><span
style='mso-spacerun:yes'> </span><o:p></o:p></span></b></em></p>
</td>
</tr>
<tr style='mso-yfti-irow:1'>
<td width=324 valign=top style='width:243.0pt;border:solid windowtext 1.0pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>Length of key<o:p></o:p></span></b></em></p>
</td>
<td width=168 valign=top style='width:126.0pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>128 bit<o:p></o:p></span></b></em></p>
</td>
</tr>
<tr style='mso-yfti-irow:2'>
<td width=324 valign=top style='width:243.0pt;border:solid windowtext 1.0pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>length of
block size<o:p></o:p></span></b></em></p>
</td>
<td width=168 valign=top style='width:126.0pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>128 bit<o:p></o:p></span></b></em></p>
</td>
</tr>
<tr style='mso-yfti-irow:3'>
<td width=324 valign=top style='width:243.0pt;border:solid windowtext 1.0pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>Architecture
of design<o:p></o:p></span></b></em></p>
</td>
<td width=168 valign=top style='width:126.0pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>Iterative
Architecture<o:p></o:p></span></b></em></p>
</td>
</tr>
<tr style='mso-yfti-irow:4'>
<td width=324 valign=top style='width:243.0pt;border:solid windowtext 1.0pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>Mode of
operation<o:p></o:p></span></b></em></p>
</td>
<td width=168 valign=top style='width:126.0pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>Electronic
code book<o:p></o:p></span></b></em></p>
</td>
</tr>
<tr style='mso-yfti-irow:5;mso-yfti-lastrow:yes'>
<td width=324 valign=top style='width:243.0pt;border:solid windowtext 1.0pt;
border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>performance<o:p></o:p></span></b></em></p>
</td>
<td width=168 valign=top style='width:126.0pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'>23 <span
class=SpellE>Mhz</span><o:p></o:p></span></b></em></p>
</td>
</tr>
</table>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'><o:p> </o:p></span></b></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><u><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt'>Structure of Decryption Core of AES algorithm<o:p></o:p></span></u></b></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><span
lang=EN-US style='mso-ansi-font-size:12.0pt;mso-bidi-font-size:12.0pt;
font-family:"Times New Roman";font-style:normal;mso-bidi-font-style:italic'>The
structure of processor that will be designed composed of several sub-block as
describe on this figure:<o:p></o:p></span></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><span
lang=EN-US style='mso-ansi-font-size:12.0pt;mso-bidi-font-size:12.0pt;
font-family:"Times New Roman";font-style:normal;mso-bidi-font-style:italic'><o:p> </o:p></span></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US><!--[if gte vml 1]><v:shape id="_x0000_i1025" type="#_x0000_t75"
style='width:6in;height:231pt' o:ole="" o:allowoverlap="f">
<v:imagedata src="dekrip_files/image005.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=576 height=308
src="dekrip_files/image006.gif" v:shapes="_x0000_i1025"><![endif]><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Visio.Drawing.5" ShapeID="_x0000_i1025"
DrawAspect="Content" ObjectID="_1086960052">
</o:OLEObject>
</xml><![endif]--></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i
style='mso-bidi-font-style:normal'><span lang=EN-US style='font-family:Verdana'>Description
of each sub-block<o:p></o:p></span></i></p>
<ol start=1 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo6;tab-stops:list 36.0pt'><i style='mso-bidi-font-style:
normal'><span lang=EN-US style='font-family:Verdana'>Block Input (data and
key)<o:p></o:p></span></i></li>
</ol>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt'><span lang=EN-US>This function of this block is as port of <span
class=SpellE>ciphertext</span>, block size 128 bit will be <span class=SpellE>divede</span>
into four 32 bit.<span style='mso-spacerun:yes'> </span></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:36.0pt'><span lang=EN-US><!--[if gte vml 1]><v:shape id="_x0000_i1026"
type="#_x0000_t75" style='width:393.75pt;height:200.25pt' o:ole="">
<v:imagedata src="dekrip_files/image007.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=525 height=267
src="dekrip_files/image008.gif" v:shapes="_x0000_i1026"><![endif]><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Visio.Drawing.5" ShapeID="_x0000_i1026"
DrawAspect="Content" ObjectID="_1086960053">
</o:OLEObject>
</xml><![endif]--></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><i style='mso-bidi-font-style:normal'><span lang=EN-US
style='font-family:Verdana'><o:p> </o:p></span></i></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><i style='mso-bidi-font-style:normal'><span lang=EN-US
style='font-family:Verdana'><o:p> </o:p></span></i></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i
style='mso-bidi-font-style:normal'><span lang=EN-US style='font-family:Verdana'>2.
Block Machine<o:p></o:p></span></i></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><span lang=EN-US>Structure of Block <span class=GramE>Machine
:</span><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US><!--[if gte vml 1]><v:shape id="_x0000_i1029" type="#_x0000_t75"
style='width:6in;height:141.75pt' o:ole="">
<v:imagedata src="dekrip_files/image009.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=576 height=189
src="dekrip_files/image010.gif" v:shapes="_x0000_i1029"><![endif]><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Visio.Drawing.5" ShapeID="_x0000_i1029"
DrawAspect="Content" ObjectID="_1086960054">
</o:OLEObject>
</xml><![endif]--></span><i style='mso-bidi-font-style:normal'><span
lang=EN-US style='font-family:Verdana'><o:p></o:p></span></i></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><em><span lang=EN-US style='mso-ansi-font-size:12.0pt;
mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'><o:p> </o:p></span></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman"'><o:p> </o:p></span></b></em></p>
<ol start=3 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo7;tab-stops:list 36.0pt'><em><b style='mso-bidi-font-weight:
normal'><span lang=EN-US style='mso-ansi-font-size:12.0pt;mso-bidi-font-size:
12.0pt'>Block Controller<o:p></o:p></span></b></em></li>
</ol>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><em><span lang=EN-US style='mso-ansi-font-size:12.0pt;
mso-bidi-font-size:12.0pt;font-family:"Times New Roman";font-style:normal;
mso-bidi-font-style:italic'>As a controller to block machine and key expander<o:p></o:p></span></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><span class=GramE><em><span lang=EN-US style='mso-ansi-font-size:
12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman";font-style:normal;
mso-bidi-font-style:italic'>state</span></em></span><em><span lang=EN-US
style='mso-ansi-font-size:12.0pt;mso-bidi-font-size:12.0pt;font-family:"Times New Roman";
font-style:normal;mso-bidi-font-style:italic'> diagram of controller :<o:p></o:p></span></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><span lang=EN-US style='font-family:Garamond'><!--[if gte vml 1]><v:shape
id="_x0000_i1030" type="#_x0000_t75" style='width:468pt;height:316.5pt' o:ole="">
<v:imagedata src="dekrip_files/image011.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=624 height=422
src="dekrip_files/image012.gif" v:shapes="_x0000_i1030"><![endif]><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Visio.Drawing.5" ShapeID="_x0000_i1030"
DrawAspect="Content" ObjectID="_1086960055">
</o:OLEObject>
</xml><![endif]--></span><em><b style='mso-bidi-font-weight:normal'><span
lang=EN-US style='mso-ansi-font-size:12.0pt;mso-bidi-font-size:12.0pt'><o:p></o:p></span></b></em></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US><!--[if gte vml 1]><v:shape id="_x0000_i1031" type="#_x0000_t75"
style='width:378pt;height:165pt' o:ole="">
<v:imagedata src="dekrip_files/image013.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=504 height=220
src="dekrip_files/image014.gif" v:shapes="_x0000_i1031"><![endif]><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Visio.Drawing.5" ShapeID="_x0000_i1031"
DrawAspect="Content" ObjectID="_1086960056">
</o:OLEObject>
</xml><![endif]--></span><span lang=EN-US style='font-size:9.0pt;font-family:
Verdana'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt;font-family:Verdana'><o:p> </o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt;font-family:Verdana'><o:p> </o:p></span></p>
<ol start=4 type=1>
<li class=MsoNormal style='color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;mso-list:l1 level1 lfo7;tab-stops:list 36.0pt'><i style='mso-bidi-font-style:
normal'><span style='font-family:Verdana;mso-bidi-font-family:Arial;
mso-ansi-language:IN'>Key Expander<o:p></o:p></span></i></li>
</ol>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><i style='mso-bidi-font-style:normal'><span
style='font-family:Verdana;mso-bidi-font-family:Arial;color:black;mso-ansi-language:
IN'>Flowchart<span style='mso-spacerun:yes'> </span>generation of<span
style='mso-spacerun:yes'> </span>sub-key<o:p></o:p></span></i></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:18.0pt'><!--[if gte vml 1]><v:shape id="_x0000_s1026" type="#_x0000_t75"
style='position:absolute;left:0;text-align:left;margin-left:45pt;margin-top:7.35pt;
width:230.95pt;height:331.55pt;z-index:1' filled="t">
<v:imagedata src="dekrip_files/image015.emz" o:title=""/>
<v:shadow color="#1c1c1c"/>
</v:shape><![if gte mso 9]><o:OLEObject Type="Embed" ProgID="Visio.Drawing.5"
ShapeID="_x0000_s1026" DrawAspect="Content" ObjectID="_1086960057">
</o:OLEObject>
<![endif]><![endif]--><![if !vml]><span style='mso-ignore:vglayout'>
<table cellpadding=0 cellspacing=0 align=left>
<tr>
<td width=60 height=9></td>
</tr>
<tr>
<td></td>
<td><img width=308 height=443 src="dekrip_files/image021.gif" v:shapes="_x0000_s1026"></td>
</tr>
</table>
</span><![endif]><span style='font-size:10.0pt;font-family:Arial;color:black;
mso-ansi-language:IN'><o:p> </o:p></span></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><span
style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<br style='mso-ignore:vglayout' clear=ALL>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><span
style='mso-spacerun:yes'> </span><o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><i style='mso-bidi-font-style:normal'><span style='mso-ansi-language:
IN'>State diagram of key Expander<o:p></o:p></span></i></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><span lang=EN-US><!--[if gte vml 1]><v:shape
id="_x0000_i1032" type="#_x0000_t75" style='width:270pt;height:183pt' o:ole=""
o:allowoverlap="f" fillcolor="#bbe0e3">
<v:imagedata src="dekrip_files/image017.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=360 height=244
src="dekrip_files/image018.gif" v:shapes="_x0000_i1032"><![endif]><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Visio.Drawing.6" ShapeID="_x0000_i1032"
DrawAspect="Content" ObjectID="_1086960059">
</o:OLEObject>
</xml><![endif]--></span><b style='mso-bidi-font-weight:normal'><span
style='mso-ansi-language:IN'><o:p></o:p></span></b></p>
<ol style='margin-top:0cm' start=5 type=1>
<li class=MsoNormal style='mso-list:l1 level1 lfo7;tab-stops:list 36.0pt'><i
style='mso-bidi-font-style:normal'><span style='font-family:Verdana;
mso-ansi-language:IN'>Block Output<o:p></o:p></span></i></li>
</ol>
<p class=MsoNormal><i style='mso-bidi-font-style:normal'><span
style='font-family:Verdana;mso-ansi-language:IN'><o:p> </o:p></span></i></p>
<p class=MsoNormal><i style='mso-bidi-font-style:normal'><span
style='font-family:Verdana;mso-ansi-language:IN'><o:p> </o:p></span></i></p>
<p class=MsoNormal style='margin-left:36.0pt'><i style='mso-bidi-font-style:
normal'><span style='font-family:Verdana;mso-ansi-language:IN'>Structure of
block output<o:p></o:p></span></i></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><span lang=EN-US><!--[if gte vml 1]><v:shape
id="_x0000_i1033" type="#_x0000_t75" style='width:396.75pt;height:198pt'
o:ole="">
<v:imagedata src="dekrip_files/image019.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img width=529 height=264
src="dekrip_files/image020.gif" v:shapes="_x0000_i1033"><![endif]><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Visio.Drawing.5" ShapeID="_x0000_i1033"
DrawAspect="Content" ObjectID="_1086960060">
</o:OLEObject>
</xml><![endif]--></span><b style='mso-bidi-font-weight:normal'><span
style='mso-ansi-language:IN'><o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:18.0pt'><b style='mso-bidi-font-weight:
normal'><span style='mso-ansi-language:IN'><o:p> </o:p></span></b></p>
</div>
</body>
</html>