aes_encrypt.java

java实现AES 加密解密算法

import java.io.FileOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.*;
import java.util.Properties;/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2008</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class AES_Encrypt {
//#include "jiami.h"


//typedef unsigned char uchar;
 static int Nb=4;			// number of columns in the state & expanded key
 static int Nr =10;			// number of rounds in encryption
 static int Nk= 4;			// number of columns in a key
//unsigned char KEY[16] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};
//unsigned char EX_KEY[4*Nb*(Nr+1)];

 static  char  Sbox[] = {		// forward s-box
 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
 };

// combined Xtimes2[Sbox[]]
  static char Xtime2Sbox[] = {
 0xc6, 0xf8, 0xee, 0xf6, 0xff, 0xd6, 0xde, 0x91, 0x60, 0x02, 0xce, 0x56, 0xe7, 0xb5, 0x4d, 0xec,
 0x8f, 0x1f, 0x89, 0xfa, 0xef, 0xb2, 0x8e, 0xfb, 0x41, 0xb3, 0x5f, 0x45, 0x23, 0x53, 0xe4, 0x9b,
 0x75, 0xe1, 0x3d, 0x4c, 0x6c, 0x7e, 0xf5, 0x83, 0x68, 0x51, 0xd1, 0xf9, 0xe2, 0xab, 0x62, 0x2a,
 0x08, 0x95, 0x46, 0x9d, 0x30, 0x37, 0x0a, 0x2f, 0x0e, 0x24, 0x1b, 0xdf, 0xcd, 0x4e, 0x7f, 0xea,
 0x12, 0x1d, 0x58, 0x34, 0x36, 0xdc, 0xb4, 0x5b, 0xa4, 0x76, 0xb7, 0x7d, 0x52, 0xdd, 0x5e, 0x13,
 0xa6, 0xb9, 0x00, 0xc1, 0x40, 0xe3, 0x79, 0xb6, 0xd4, 0x8d, 0x67, 0x72, 0x94, 0x98, 0xb0, 0x85,
 0xbb, 0xc5, 0x4f, 0xed, 0x86, 0x9a, 0x66, 0x11, 0x8a, 0xe9, 0x04, 0xfe, 0xa0, 0x78, 0x25, 0x4b,
 0xa2, 0x5d, 0x80, 0x05, 0x3f, 0x21, 0x70, 0xf1, 0x63, 0x77, 0xaf, 0x42, 0x20, 0xe5, 0xfd, 0xbf,
 0x81, 0x18, 0x26, 0xc3, 0xbe, 0x35, 0x88, 0x2e, 0x93, 0x55, 0xfc, 0x7a, 0xc8, 0xba, 0x32, 0xe6,
 0xc0, 0x19, 0x9e, 0xa3, 0x44, 0x54, 0x3b, 0x0b, 0x8c, 0xc7, 0x6b, 0x28, 0xa7, 0xbc, 0x16, 0xad,
 0xdb, 0x64, 0x74, 0x14, 0x92, 0x0c, 0x48, 0xb8, 0x9f, 0xbd, 0x43, 0xc4, 0x39, 0x31, 0xd3, 0xf2,
 0xd5, 0x8b, 0x6e, 0xda, 0x01, 0xb1, 0x9c, 0x49, 0xd8, 0xac, 0xf3, 0xcf, 0xca, 0xf4, 0x47, 0x10,
 0x6f, 0xf0, 0x4a, 0x5c, 0x38, 0x57, 0x73, 0x97, 0xcb, 0xa1, 0xe8, 0x3e, 0x96, 0x61, 0x0d, 0x0f,
 0xe0, 0x7c, 0x71, 0xcc, 0x90, 0x06, 0xf7, 0x1c, 0xc2, 0x6a, 0xae, 0x69, 0x17, 0x99, 0x3a, 0x27,
 0xd9, 0xeb, 0x2b, 0x22, 0xd2, 0xa9, 0x07, 0x33, 0x2d, 0x3c, 0x15, 0xc9, 0x87, 0xaa, 0x50, 0xa5,
 0x03, 0x59, 0x09, 0x1a, 0x65, 0xd7, 0x84, 0xd0, 0x82, 0x29, 0x5a, 0x1e, 0x7b, 0xa8, 0x6d, 0x2c
 };

// combined Xtimes3[Sbox[]]
  static char Xtime3Sbox[] = {
 0xa5, 0x84, 0x99, 0x8d, 0x0d, 0xbd, 0xb1, 0x54, 0x50, 0x03, 0xa9, 0x7d, 0x19, 0x62, 0xe6, 0x9a,
 0x45, 0x9d, 0x40, 0x87, 0x15, 0xeb, 0xc9, 0x0b, 0xec, 0x67, 0xfd, 0xea, 0xbf, 0xf7, 0x96, 0x5b,
 0xc2, 0x1c, 0xae, 0x6a, 0x5a, 0x41, 0x02, 0x4f, 0x5c, 0xf4, 0x34, 0x08, 0x93, 0x73, 0x53, 0x3f,
 0x0c, 0x52, 0x65, 0x5e, 0x28, 0xa1, 0x0f, 0xb5, 0x09, 0x36, 0x9b, 0x3d, 0x26, 0x69, 0xcd, 0x9f,
 0x1b, 0x9e, 0x74, 0x2e, 0x2d, 0xb2, 0xee, 0xfb, 0xf6, 0x4d, 0x61, 0xce, 0x7b, 0x3e, 0x71, 0x97,
 0xf5, 0x68, 0x00, 0x2c, 0x60, 0x1f, 0xc8, 0xed, 0xbe, 0x46, 0xd9, 0x4b, 0xde, 0xd4, 0xe8, 0x4a,
 0x6b, 0x2a, 0xe5, 0x16, 0xc5, 0xd7, 0x55, 0x94, 0xcf, 0x10, 0x06, 0x81, 0xf0, 0x44, 0xba, 0xe3,
 0xf3, 0xfe, 0xc0, 0x8a, 0xad, 0xbc, 0x48, 0x04, 0xdf, 0xc1, 0x75, 0x63, 0x30, 0x1a, 0x0e, 0x6d,
 0x4c, 0x14, 0x35, 0x2f, 0xe1, 0xa2, 0xcc, 0x39, 0x57, 0xf2, 0x82, 0x47, 0xac, 0xe7, 0x2b, 0x95,
 0xa0, 0x98, 0xd1, 0x7f, 0x66, 0x7e, 0xab, 0x83, 0xca, 0x29, 0xd3, 0x3c, 0x79, 0xe2, 0x1d, 0x76,
 0x3b, 0x56, 0x4e, 0x1e, 0xdb, 0x0a, 0x6c, 0xe4, 0x5d, 0x6e, 0xef, 0xa6, 0xa8, 0xa4, 0x37, 0x8b,
 0x32, 0x43, 0x59, 0xb7, 0x8c, 0x64, 0xd2, 0xe0, 0xb4, 0xfa, 0x07, 0x25, 0xaf, 0x8e, 0xe9, 0x18,
 0xd5, 0x88, 0x6f, 0x72, 0x24, 0xf1, 0xc7, 0x51, 0x23, 0x7c, 0x9c, 0x21, 0xdd, 0xdc, 0x86, 0x85,
 0x90, 0x42, 0xc4, 0xaa, 0xd8, 0x05, 0x01, 0x12, 0xa3, 0x5f, 0xf9, 0xd0, 0x91, 0x58, 0x27, 0xb9,
 0x38, 0x13, 0xb3, 0x33, 0xbb, 0x70, 0x89, 0xa7, 0xb6, 0x22, 0x92, 0x20, 0x49, 0xff, 0x78, 0x7a,
 0x8f, 0xf8, 0x80, 0x17, 0xda, 0x31, 0xc6, 0xb8, 0xc3, 0xb0, 0x77, 0x11, 0xcb, 0xfc, 0xd6, 0x3a
 };

// exchanges columns in each of 4 rows
// row0 - unchanged,
//row1- shifted left 1,
// row2 - shifted left 2
//and row3 - shifted left 3

 void ShiftRows (char state[])        //字节代换加行移位
 {
 char tmp;

         // just substitute row 0
        try {
            state[0] = Sbox[state[0] % 256];
            state[4] = Sbox[state[4] % 256]; //第一行不用移动  ?state[0]序号对不？对
            state[8] = Sbox[state[8] % 256];
            state[12] = Sbox[state[12] % 256];
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        try {
            // rotate row 1
            tmp = Sbox[state[1] % 256];
            state[1] = Sbox[state[5] % 256]; //第二行移动1格
            state[5] = Sbox[state[9] % 256];
            state[9] = Sbox[state[13] % 256];
            state[13] = tmp;
        } catch (Exception ex1) {
            ex1.printStackTrace();
        }

        try {
            // rotate row 2
            tmp = Sbox[state[2] % 256];
            state[2] = Sbox[state[10] % 256];
            state[10] = tmp; //第三行移动两格
            tmp = Sbox[state[6] % 256];
            state[6] = Sbox[state[14] % 256];
            state[14] = tmp;
        } catch (Exception ex2) {
            ex2.printStackTrace();
        }

        try {
            // rotate row 3
            tmp = Sbox[state[15] % 256];
            state[15] = Sbox[state[11] % 256];
            state[11] = Sbox[state[7] % 256];
            state[7] = Sbox[state[3] % 256];
            state[3] = tmp; //第四行移动三格
        } catch (Exception ex3) {
            ex3.printStackTrace();
        }
 }

// recombine and mix each row in a column
 /*****************************************************************************
      0  4  8  12             0  4  8  12                   S'0,j=(2*S0,j)^(3*S1,j)^S2,j^S3,j ;(column 1)
          1  5  9  13  行变换后   5  9  13  1   然后进入列混淆  S'1,j=S0,j^(2*S1,j)^(3*S2,j)^S3,j ;(column 2)
          2  6  10 14  <--------  10 14  2  6   --------------》S'2,j=S0,j^S1,j^(2*S2,j)^(3*S3,j) ;(column 3)
          3  7  11 15  --反---- > 15  3  7  11                  S'3,j=(3*S0,j)^S1,j^S2,j^(2*S3,j) ;(column 4)
   ****************************************************************************/
 void MixSubColumns (char state[])//该函数包含了行移位，列混淆和字节代换
 {
 char[] newstate=new char[4 * Nb];  //自加注释：4行4列

         // mixing column 0
         newstate[0] = (char)(Xtime2Sbox[state[0]%256] ^ Xtime3Sbox[state[5]%256] ^ Sbox[state[10]%256] ^ Sbox[state[15]%256]);
         newstate[1] = (char)(Sbox[state[0]%256] ^ Xtime2Sbox[state[5]%256] ^ Xtime3Sbox[state[10]%256] ^ Sbox[state[15]%256]);
         newstate[2] = (char)(Sbox[state[0]%256] ^ Sbox[state[5]%256] ^ Xtime2Sbox[state[10]%256] ^ Xtime3Sbox[state[15]%256]);
         newstate[3] = (char)(Xtime3Sbox[state[0]%256] ^ Sbox[state[5]%256] ^ Sbox[state[10]%256] ^ Xtime2Sbox[state[15]%256]);

         // mixing column 1
         newstate[4] = (char)(Xtime2Sbox[state[4]%256] ^ Xtime3Sbox[state[9]%256] ^ Sbox[state[14]%256] ^ Sbox[state[3]%256]);
         newstate[5] = (char)(Sbox[state[4]%256] ^ Xtime2Sbox[state[9]%256] ^ Xtime3Sbox[state[14]%256] ^ Sbox[state[3]%256]);
         newstate[6] = (char)(Sbox[state[4]%256] ^ Sbox[state[9]%256] ^ Xtime2Sbox[state[14]%256] ^ Xtime3Sbox[state[3]%256]);
         newstate[7] = (char)(Xtime3Sbox[state[4]%256] ^ Sbox[state[9]%256] ^ Sbox[state[14]%256] ^ Xtime2Sbox[state[3]%256]);

         // mixing column 2
         newstate[8] = (char)(Xtime2Sbox[state[8]%256] ^ Xtime3Sbox[state[13]%256] ^ Sbox[state[2]%256] ^ Sbox[state[7]%256]);
         newstate[9] = (char)(Sbox[state[8]%256] ^ Xtime2Sbox[state[13]%256] ^ Xtime3Sbox[state[2]%256] ^ Sbox[state[7]%256]);
         newstate[10]  = (char)(Sbox[state[8]%256] ^ Sbox[state[13]%256] ^ Xtime2Sbox[state[2]%256] ^ Xtime3Sbox[state[7]%256]);
         newstate[11]  = (char)(Xtime3Sbox[state[8]%256] ^ Sbox[state[13]%256] ^ Sbox[state[2]%256] ^ Xtime2Sbox[state[7]%256]);

         // mixing column 3
         newstate[12] = (char)(Xtime2Sbox[state[12]%256] ^ Xtime3Sbox[state[1]%256] ^ Sbox[state[6]%256] ^ Sbox[state[11]%256]);
         newstate[13] = (char)(Sbox[state[12]%256] ^ Xtime2Sbox[state[1]%256] ^ Xtime3Sbox[state[6]%256] ^ Sbox[state[11]%256]);
         newstate[14] = (char)(Sbox[state[12]%256] ^ Sbox[state[1]%256] ^ Xtime2Sbox[state[6]%256] ^ Xtime3Sbox[state[11]%256]);
         newstate[15] = (char)(Xtime3Sbox[state[12]%256] ^ Sbox[state[1]%256] ^ Sbox[state[6]%256] ^ Xtime2Sbox[state[11]%256]);


//     memcpy (state, newstate, sizeof(newstate));  //存于state[]
         for (int i = 0; i < 4 * Nb; i++) {
      state[i] = newstate[i];
    }
 }

 char Rcon[] = {0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};

// produce Nk bytes for each round
 void ExpandKey ( char key[], char expkey[])
 {
  char tmp0, tmp1, tmp2, tmp3, tmp4;
 int idx;

         for( idx = 0; idx < Nk; idx++ ) {
                 expkey[4*idx+0] = key[4 * idx + 0];
                 expkey[4*idx+1] = key[4 * idx + 1];
                 expkey[4*idx+2] = key[4 * idx + 2];
                 expkey[4*idx+3] = key[4 * idx + 3];
         }