AES算法源代码.docx
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AES算法源代码
//===================================================================
//RijndaelcodeAugust01
//
//author:
VincentRijmen
//Thiscodeisbasedontheofficialreferencecode
//byPauloBarretoandVincentRijmen
//
//Thiscodeisplacedinthepublicdomain.
//Withoutanywarrantyoffitnessforanypurpose
//===================================================================
#include
//===================================================================
typedefunsignedcharword8;
typedefunsignedintword32;
//===================================================================
//ThetableLogtableandAlogtableareusedtoperform
//multiplicationinGF（256）
//===================================================================
word8Logtable[256]={
0,0,25,1,50,2,26,198,
75,199,27,104,51,238,223,3,
100,4,224,14,52,141,129,239,
76,113,8,200,248,105,28,193,
125,194,29,181,249,185,39,106,
77,228,166,114,154,201,9,120,
101,47,138,5,33,15,225,36,
18,240,130,69,53,147,218,142,
150,143,219,189,54,208,206,148,
19,92,210,241,64,70,131,56,
102,221,253,48,191,6,139,98,
179,37,226,152,34,136,145,16,
126,110,72,195,163,182,30,66,
58,107,40,84,250,133,61,186,
43,121,10,21,155,159,94,202,
78,212,172,229,243,115,167,87,
175,88,168,80,244,234,214,116,
79,174,233,213,231,230,173,232,
44,215,117,122,235,22,11,245,
89,203,95,176,156,169,81,160,
127,12,246,111,23,196,73,236,
216,67,31,45,164,118,123,183,
204,187,62,90,251,96,177,134,
59,82,161,108,170,85,41,157,
151,178,135,144,97,190,220,252,
188,149,207,205,55,63,91,209,
83,57,132,60,65,162,109,71,
20,42,158,93,86,242,211,171,
68,17,146,217,35,32,46,137,
180,124,184,38,119,153,227,165,
103,74,237,222,197,49,254,24,
13,99,140,128,192,247,112,7
};
//===================================================================
word8Alogtable[256]={
1,3,5,15,17,51,85,255,
26,46,114,150,161,248,19,53,
95,225,56,72,216,115,149,164,
247,2,6,10,30,34,102,170,
229,52,92,228,55,89,235,38,
106,190,217,112,144,171,230,49,
83,245,4,12,20,60,68,204,
79,209,104,184,211,110,178,205,
76,212,103,169,224,59,77,215,
98,166,241,8,24,40,120,136,
131,158,185,208,107,189,220,127,
129,152,179,206,73,219,118,154,
181,196,87,249,16,48,80,240,
11,29,39,105,187,214,97,163,
254,25,43,125,135,146,173,236,
47,113,147,174,233,32,96,160,
251,22,58,78,210,109,183,194,
93,231,50,86,250,21,63,65,
195,94,226,61,71,201,64,192,
91,237,44,116,156,191,218,117,
159,186,213,100,172,239,42,126,
130,157,188,223,122,142,137,128,
155,182,193,88,232,35,101,175,
234,37,111,177,200,67,197,84,
252,31,33,99,165,244,7,9,
27,45,119,153,176,203,70,202,
69,207,74,222,121,139,134,145,
168,227,62,66,198,81,243,14,
18,54,90,238,41,123,141,140,
143,138,133,148,167,242,13,23,
57,75,221,124,132,151,162,253,
28,36,108,180,199,82,246,1
};
//===================================================================
word8S[256]={
99,124,119,123,242,107,111,197,
48,1,103,43,254,215,171,118,
202,130,201,125,250,89,71,240,
173,212,162,175,156,164,114,192,
183,253,147,38,54,63,247,204,
52,165,229,241,113,216,49,21,
4,199,35,195,24,150,5,154,
7,18,128,226,235,39,178,117,
9,131,44,26,27,110,90,160,
82,59,214,179,41,227,47,132,
83,209,0,237,32,252,177,91,
106,203,190,57,74,76,88,207,
208,239,170,251,67,77,51,133,
69,249,2,127,80,60,159,168,
81,163,64,143,146,157,56,245,
188,182,218,33,16,255,243,210,
205,12,19,236,95,151,68,23,
196,167,126,61,100,93,25,115,
96,129,79,220,34,42,144,136,
70,238,184,20,222,94,11,219,
224,50,58,10,73,6,36,92,
194,211,172,98,145,149,228,121,
231,200,55,109,141,213,78,169,
108,86,244,234,101,122,174,8,
186,120,37,46,28,166,180,198,
232,221,116,31,75,189,139,138,
112,62,181,102,72,3,246,14,
97,53,87,185,134,193,29,158,
225,248,152,17,105,217,142,148,
155,30,135,233,206,85,40,223,
140,161,137,13,191,230,66,104,
65,153,45,15,176,84,187,22
};
//===================================================================
word8Si[256]={
82,9,106,213,48,54,165,56,
191,64,163,158,129,243,215,251,
124,227,57,130,155,47,255,135,
52,142,67,68,196,222,233,203,
84,123,148,50,166,194,35,61,
238,76,149,11,66,250,195,78,
8,46,161,102,40,217,36,178,
118,91,162,73,109,139,209,37,
114,248,246,100,134,104,152,22,
212,164,92,204,93,101,182,146,
108,112,72,80,253,237,185,218,
94,21,70,87,167,141,157,132,
144,216,171,0,140,188,211,10,
247,228,88,5,184,179,69,6,
208,44,30,143,202,63,15,2,
193,175,189,3,1,19,138,107,
58,145,17,65,79,103,220,234,
151,242,207,206,240,180,230,115,
150,172,116,34,231,173,53,133,
226,249,55,232,28,117,223,110,
71,241,26,113,29,41,197,137,
111,183,98,14,170,24,190,27,
252,86,62,75,198,210,121,32,
154,219,192,254,120,205,90,244,
31,221,168,51,136,7,199,49,
177,18,16,89,39,128,236,95,
96,81,127,169,25,181,74,13,
45,229,122,159,147,201,156,239,
160,224,59,77,174,42,245,176,
200,235,187,60,131,83,153,97,
23,43,4,126,186,119,214,38,
225,105,20,99,85,33,12,125
};
//===================================================================
word32Rc[30]={
0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x1B,
0x36,0x6C,0xD8,0xAB,0x4D,0x9A,0x2F,0x5E,0xBC,0x63,
0xC6,0x97,0x35,0x6A,0xD4,0xB3,0x7D,0xFA,0xEF,0xC5
};
//===================================================================
#defineMAXBC8
#defineMAXKC8
#defineMAXROUNDS14
//===================================================================
staticword8shifts[5][4]={
0,1,2,3,
0,1,2,3,
0,1,2,3,
0,1,2,4,
0,1,3,4};
//===================================================================
staticintnumrounds[5][5]={
10,11,12,13,14,
11,11,12,13,14,
12,12,12,13,14,
13,13,13,13,14,
14,14,14,14,14};
//===================================================================
intBC;
intKC;
intROUNDS;
//===================================================================
//multiplytwoelementsofGF（256）
//requiredforMixColumnsandInvMicolumns
//===================================================================
word8mul（word8a,word8b）
{
if（a&&b）
returnAlogtable[（Logtable[a]+Logtable[b]）%255];
else
return0;
}
//===================================================================
//XORcorrespondingtextinputandroundkeyinputbytes
//===================================================================
voidAddRoundKey（word8a[4][MAXBC],word8rk[4][MAXBC]）
{
inti;
intj;
for（i=0;i<4;i++）
for（j=0;j{
a[i][j]^=rk[i][j];
}
}
//===================================================================
//Replaceeverybyteoftheinputbythebyteatthatplace
//inthenon-linearS-box
//===================================================================
voidSubBytes（word8a[4][MAXBC],word8box[256]）
{
inti;
intj;
for（i=0;i<4;i++）
for（j=0;j{
a[i][j]=box[a[i][j]];
}
}
//===================================================================
//Row0remainsunchanged
//Theotherthreerowsareshiftedavariadleamount
//===================================================================
voidShiftRows（word8a[4][MAXBC],word8d）
{
word8tmp[MAXBC];
inti;
intj;
if（d==0）
{
for（i=1;i<4;i++）
{
for（j=0;j{
tmp[j]=a[i][（j+shifts[BC-4][i]）%BC];
}
for（j=0;j{
a[i][j]=tmp[j];
}
}
}
else
{
for（i=1;i<4;i++）
{
for（j=0;j{
tmp[j]=a[i][（BC+j-shifts[BC-4][i]）%BC];
}
for（j=0;j{
a[i][j]=tmp[j];
}
}
}
}
//===================================================================
//Mixthefourbytesofeverycolumninalinearway
//===================================================================
voidMixColumns（word8a[4][MAXBC]）
{
word8b[4][MAXBC];
inti;
intj;
for（j=0;jfor（i=0;i<4;i++）
{
b[i][j]=mul（2,a[i][j]）^mul（3,a[（i+1）%4][j]）^a[（i+2）%4][j]^a[（i+3）%4][j];
}
for（i=0;i<4;i++）
for（j=0;j{
a[i][j]=b[i][j];
}
}
//===================================================================
//Mixthefourbytesofeverycolumninalinearway
//ThisistheoppositeoperationofMixcolumns
//===================================================================
voidInvMixcolumns（word8a[4][MAXBC]）
{
word8b[4][MAXBC];
inti;
intj;
for（j=0;jfor（i=0;i<4;i++）
{
b[i][j]=mul（0xe,a[i][j]）^mul（0xb,a[（i+1）%4][j]）
^mul（0xd,a[（i+2）%4][j]）^mul（0x9,a[（i+3）%4][j]）;
}
for（i=0;i<4;i++）
for（j=0;j{
a[i][j]=b[i][j];
}
}
//===================================================================
intKeyExpansion（wo
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