AES加密算法实验报告
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实验报告
学号：姓名：专业：班级：第 10 周
static void SubBytes(unsigned char p[16]);
static void inSubBytes(unsigned char p[16]);
static void ShiftRows(unsigned char e[]);
static void inShiftRows(unsigned char e[]);
static void MatrixToByte(unsigned char e[]);
static void inMatrixToByte(unsigned char e[]);
static unsigned char FFmul(unsigned char a, unsigned char b);
static void KeyAdding(unsigned char state[16], unsigned char k[][4]);
static void KeyExpansion(unsigned char* key, unsigned char w[][4][4]);
~plaintext();
private:
};
#include""
using namespace std;
static unsigned char sBox[] = {};/定义加密S盒/
unsigned char insBox[256] ={};//定义解密S盒
plaintext::plaintext()
{
}
void plaintext::createplaintext(unsigned char a[])//创建明文
{
int i = 0;
unsigned int p[16];
for (int j = 0; j<200; j++)
{
if (a[j] == 0)
{
break;
}
}
for (; i<16; i++)
{
p[i] = a[i];
a[i] = a[i + 16];
}
}
void plaintext::SubBytes(unsigned char p[16])//字节变换函数
{
unsigned char b[16];
for (int i = 0; i<16; i++)
{
b[i] = sBox[(int)p[i]];
}
}
void plaintext::inSubBytes(unsigned char p[16])//逆字节变换函数{
unsigned char b[16];
for (int i = 0; i<16; i++)
{
b[i] = insBox[(int)p[i]];
}
}
void plaintext::ShiftRows(unsigned char e[])//行移位变换函数
{
unsigned char t[4];
for (int i = 1; i<4; i++)
{
for (int x = 0; x<4; x++)
t[x] = e[x + i * 4];
for (int y = 0; y<4; y++)
e[(y + 4 - i) % 4 + i * 4] = t[y];
}
}
void plaintext::inShiftRows(unsigned char e[])//逆行移位变换函数{
unsigned char t[4];
for (int i = 1; i<4; i++)
{
for (int x = 0; x<4; x++)
t[x] = e[x + i * 4];
for (int y = 0; y<4; y++)
e[(y + i) % 4 + i * 4] = t[y];
}
}
void plaintext::MatrixToByte(unsigned char e[])//列混合变换函数
{
unsigned char t[4];
int r, c;
for (c = 0; c< 4; c++)
{
for (r = 0; r<4; r++)
{
t[r] = e[r * 4 + c];
}
for (r = 0; r<4; r++)
{
e[r * 4 + c] = FFmul(0x02, t[r])
^ FFmul(0x03, t[(r + 1) % 4])
^ FFmul(0x01, t[(r + 2) % 4])
^ FFmul(0x01, t[(r + 3) % 4]);
}
}
}
void plaintext::inMatrixToByte(unsigned char e[])//逆列混合变换函数{
unsigned char t[4];
int r, c;
for (c = 0; c< 4; c++)
{
for (r = 0; r<4; r++)
{
t[r] = e[r * 4 + c];
}
for (r = 0; r<4; r++)
{