JAVA類庫 AES128算法加解密十六進制

ID:392277 · 發表于 2020-4-22 20:45

AES128加解碼算法

一、功能：
輸入16進制明文/密文字符串，與字符串秘鑰，輸出密文/明文16進制字符串或者數組；

二、傳參舉例
密文/明文：
String str  =  "99 10 0D 15 0B 95 01 6B 6E 4B 0F E3 45 AD 65 D4",
秘    鑰：
String key = "0123456789abcdef";

三、調用接口
public String AES_EncryStr(String stateStr,String keyStr)； //加密輸出字符串
public String AES_DecryptStr(String stateStr,String keyStr)；//解密輸出字符串
public int[][] AES_Encry(String stateStr,String keyStr)；    //加密輸出數組
public int[][] AES_Decrypt(String stateStr,String keyStr)； //解密輸出數組

四、AES加密算法主要步驟
輪密鑰加：AddRoundKey
字節替代：SubBytes
行移位：ShiftRows
列混合：MixColumns

class AES_Lib{
/*************************************************************
* 函數 : 加密輸出字符串
* 參數：stateStr ：明文
keyStr : 秘鑰
* 返回值：密文字符串
*************************************************************/
public String AES_EncryStr(String stateStr,String keyStr){
int[][] output= new int[4][4];
String outStr="";
output=AES_Encry(stateStr,keyStr);
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
String str =Integer.toHexString(output[i][j]);
if(str.length()==1){
str="0"+str;
}
outStr=outStr+str;
}
}
return outStr;
}
/*************************************************************
* 函數 : 解密輸出字符串
* 參數：stateStr ：密文
keyStr : 秘鑰
* 返回值：明文字符串
*************************************************************/
public String AES_DecryptStr(String stateStr,String keyStr){//
int[][] output= new int[4][4];
String outStr="";
output=AES_Decrypt(stateStr,keyStr);
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
String str =Integer.toHexString(output[i][j]);
if(str.length()==1){
str="0"+str;
}
outStr=outStr+str;
}
}
return outStr;
}
/*************************************************************
* 函數 : 解密輸出明文數組
* 參數：stateStr ：密文
keyStr : 秘鑰
* 返回值：明文數組
*************************************************************/
public int[][] AES_Decrypt(String stateStr,String keyStr){//解密
Boolean Encry = false;
int[][][] w = new int[11][4][4];
// 1.密碼擴展
int[][] key = new int[4][4];
key=StrToHex(keyStr);//字符轉16進制數組
keyExpansion(key, w);
int[][] temp = new int[4][4];
int[][] state =new int[4][4];
state=StrHexToHex(stateStr);
keyTemp(10, w, temp);
AddRoundKey(state, temp, Encry);
for (int i = 9; i > 0; i--) {
ShiftRows(state, Encry);
SubBytes(state, Encry);
keyTemp(i, w, temp);
AddRoundKey(state, temp, Encry);
MixColoumns(state, Encry);
}
ShiftRows(state, Encry);
SubBytes(state, Encry);
keyTemp(0, w, temp);
AddRoundKey(state, temp, Encry);
return state;
}
/*************************************************************
* 函數 : 加密輸出密文數組
* 參數：stateStr ：明文
keyStr : 秘鑰
* 返回值：密文數組
*************************************************************/
public int[][] AES_Encry(String stateStr,String keyStr) {//加密
int[][] outData =new int[4][4];
Boolean Encry = true;
int[][][] w = new int[11][4][4];
// 1.密碼擴展
int[][] key = new int[4][4];
key=StrToHex(keyStr);//字符轉16進制數組
keyExpansion(key, w);//秘鑰擴展
//開始輪秘鑰第0輪；
int[][] temp = new int[4][4];
int[][] state =new int[4][4];
state=StrHexToHex(stateStr);
keyTemp(0, w, temp);
AddRoundKey(state, temp, Encry);
for (int i = 1; i < 10; i++)
{
SubBytes(state, Encry);
//Console.WriteLine("第" + i + "輪字節替換");
//HexShow(state);
//Console.WriteLine("-------------------");
ShiftRows(state, Encry);
//Console.WriteLine("第" + i + "輪行移位");
//HexShow(state);
//Console.WriteLine("-------------------");
MixColoumns(state, Encry);
//Console.WriteLine("第" + i + "列混淆");
//HexShow(state);
//Console.WriteLine("-------------------");
keyTemp(i, w, temp);
AddRoundKey(state, temp, Encry);
//Console.WriteLine("第" + i + "輪加秘鑰");
//HexShow(state);
// Console.WriteLine("-------------------");
}
SubBytes(state, Encry);
ShiftRows(state, Encry);
//MixColoumns(state, true);
keyTemp(10, w, temp);
AddRoundKey(state, temp, Encry);
return state;
//outData=StrToHex(key);
//return outData;
}
/*************************************************************
*
* 秘密盒子S_Box
*
*************************************************************/
private static int[][] S_BOX={// populate the Sbox matrix
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/*0*/ { 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76},
/*1*/ {0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0},
/*2*/ {0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15},
/*3*/ {0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75},
/*4*/ {0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84},
/*5*/ {0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf},
/*6*/ {0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8},
/*7*/ {0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2},
/*8*/ {0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73},
/*9*/ {0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb},
/*a*/ {0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79},
/*b*/ {0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08},
/*c*/ {0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a},
/*d*/ {0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e},
/*e*/ {0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf},
/*f*/ {0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16} };
/*************************************************************
*
* 逆向秘密盒子INVERSE_S_Box
*
*************************************************************/
private static int[][] INVERSE_S_BOX = { // populate the iSbox matrix
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/*0*/ {0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb},
/*1*/ {0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb},
/*2*/ {0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e},
/*3*/ {0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25},
/*4*/ {0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92},
/*5*/ {0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84},
/*6*/ {0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06},
/*7*/ {0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b},
/*8*/ {0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73},
/*9*/ {0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e},
/*a*/ {0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b},
/*b*/ {0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4},
/*c*/ {0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f},
/*d*/ {0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef},
/*e*/ {0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61},
/*f*/ {0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d} };
/**************************************************************
* 函數：字節替換為密碼盒
* 參數：a為數據的數據
* encode：true為加密模式，false為解密模式；
* 返回值：無
**************************************************************/
private static void SubBytes(int[][] a, Boolean encode)
{
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
int temp = a[i][j];
int row = temp / 16;//取密碼盒行
int column = temp % 16;//取密碼盒列
if (encode == true)
{
a[i][j] = S_BOX[row][column];//正向字節替換
}
else if (encode == false)
{
a[i][j] = INVERSE_S_BOX[row][ column];//逆向字節替換
}
}
}
}
/**************************************************************
* 函數：行位移
* 參數：a為數據的數據
* encode：true為加密模式，false為解密模式；
* 返回值：無
**************************************************************/
private static void ShiftRows(int[][] a, Boolean encode)
{
int[][] temp = new int[4][4];
int[][] L1 = {{ 0,1,2,3},{ 1,2,3,0},{ 2,3,0,1},{ 3,0,1,2}}; //正向行移位數組
int[][] L2 = {{ 0,3,2,1},{ 1,0,3,2},{ 2,1,0,3},{3,2,1,0}}; //逆向行移位數組
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
temp[i][j] = a[i][j];
}
}
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
if (encode==true)
{
int h=L1[i][j];
a[i][j]=temp[h][j];
}else if(encode==false){
int h=L2[i][j];
a[i][j]=temp[h][j];
}
}
}
}
/**************************************************************
* 函數：列混合
* 參數：a為數據的數據
* encode：true為加密模式，false為解密模式；
* encode 為1代表列混淆，為0代表逆向列混淆
* 返回值：無
**************************************************************/
private static void MixColoumns(int[][] a, Boolean encode)
{
int[][] mass = {{0x2,0x3,0x1,0x1},{0x1,0x2,0x3,0x1},{0x1,0x1,0x2,0x3},{0x3,0x1,0x1,0x2}};//正向列混合
int[][] inverse = {{0xe,0xb,0xd,0x9},{0x9,0xe,0xb,0xd},{0xd,0x9,0xe,0xb},{0xb,0xd,0x9,0xe}};//逆向列混合
int[][] temp = new int[4][4];
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
temp[i][j] = a[i][j];
}
}
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
if (encode == true)
{
a[i][j] = aes_multiple1(mass[j][0], temp[i][0]) ^ aes_multiple1(mass[j][1], temp[i][1]) ^ aes_multiple1(mass[j][2], temp[i][2]) ^ aes_multiple1(mass[j][3], temp[i][3]);
}
else if (encode == false) {
a[i][j] = aes_multiple1(inverse[j][0], temp[i][0]) ^ aes_multiple1(inverse[j][1], temp[i][1]) ^ aes_multiple1(inverse[j][2], temp[i][2]) ^ aes_multiple1(inverse[j][3], temp[i][3]);
}
}
}
}
/*AES乘法
* */
private static int aes_multiple1(int le,int b){
int result = 0;
if (le == 1)
{
result = tby01(b);
}
else if (le == 2)
{
result = tby02(b);
}
else if (le == 3)//(2)+1
{
result = tby02(b) ^ tby01(b);
}
else if (le == 0x9)//8+1 =(2+(2+(2)))+1
{
result = tby02(tby02(tby02(b))) ^ tby01(b);
}
else if (le == 0xb)//8+2+1=(2+(2+(2)))+((2)+1)
{
result = tby02(tby02(tby02(b))) ^ (tby02(b) ^ tby01(b));
}
else if (le == 0xd)//8+4+1=(2+(2+(2)))+((2+(2))+1)
{
result = tby02(tby02(tby02(b))) ^ (tby02(tby02(b)) ^ tby01(b));
}
else if (le == 0xe)//8+4+2=(2+(2+(2)))+((2+(2))+(2)
{
result = tby02(tby02(tby02(b))) ^ tby02(tby02(b)) ^ tby02(b);
}
return result;
}
private static int tby01(int b) {
return b;
}
private static int tby02(int b)
{
int x = b << 1;
if (b < 0x80)
return x;
else
{
x = x ^ 0x1b;
x = x & 0xff;
return x;
}
}
/**************************************************************
* 函數：AES秘鑰擴展
* 參數：key為秘鑰數組
w為擴展數組
* 返回值：無
**************************************************************/
//
private static void keyExpansion(int[][] key, int[][][] w){//AES秘鑰擴展
int[] RC = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 };
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
w[0][i][j] = key[i][j];
}
}
for (int i = 1; i < 11; i++)
{
for (int j = 0; j < 4; j++)
{
int[] temp = new int[4];
if (j == 0)
{
temp[0] = w[i - 1 ][3][1];
temp[1] = w[i - 1][3][2];
temp[2] = w[i - 1][ 3][3];
temp[3] = w[i - 1][3][0];
for (int k = 0; k < 4; k++)
{
int m = temp[k];
int row = m / 16;
int column = m % 16;
temp[k] = S_BOX[row][column];
if (k == 0)
{
temp[k] = temp[k] ^ RC[i - 1];
}
}
}
else
{
temp[0] = w[i][j - 1][0];
temp[1] = w[i][j - 1][1];
temp[2] = w[i][j - 1][2];
temp[3] = w[i][j - 1][3];
}
for (int l = 0; l < 4; l++)
{
w[i][j][l] = w[i - 1][j][l] ^ temp[l];
}
}
}
}
{//AES單路秘鑰輸出
private static void keyTemp(int a, int[][][] w, int[][] b)
int[][] temp = new int[4][4];
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
b[i][j] = w[a][i][j];
}
}
}
// 輪密鑰加
private static void AddRoundKey(int[][] a, int[][] b, Boolean c)
{
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
a[i][j] = a[i][j] ^ b[i][j];
}
}
}
//Hex字符轉16進制數組；
static int[][] StrHexToHex(String str) {
str=str.replace(" ", "");
int leng = str.length();
if (leng < 32)
{
for (int i = 0; i < 32 - leng; i++)
{
str = str + "0";
}
}
else if (leng > 32) {
str = str.substring(0, 32);
}
int[][] hexArr = new int[4][4];
int k = 0;
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++)
{
String strTemp = str.substring(k,k+2 );
hexArr[i][j]=Integer.parseInt(strTemp,16);
k=k+2;
}
}
return hexArr;
}
//去除字符串中的空格；
static int[][] StrToHex(String str){
str=str.replace(" ","");
int[][] hexArr = new int[4][4];
int k = 0;
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
char tempStr=str.toCharArray()[k];
int tempNum =(int)tempStr;//Integer.parseInt(tempStr);
//convert.ToChar(tempStr);
hexArr[i][j]=tempNum;
k++;
}
}
return hexArr;
}
}

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JAVA類庫 AES128算法加解密十六進制

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