AES加密 java&c++版本

电玩女神 2022-08-18 01:49 131阅读 0赞

# AES加密 java&c++版本 #

### C++版本 ###

AES.h：

#ifndef __AES_H__
    #define __AES_H__
    #include <string.h>
    class AES
    {
    public:
        AES(unsigned char* key);
        virtual ~AES();
        //加密整段文字
        void Bm53Cipher(char *input,char *output);  
        void Bm53InvCipher(char *inut, char *output);
        void InvCipher(char *inut, char *output);
    private:    
        unsigned char* Cipher(unsigned char* input);    
        unsigned char* InvCipher(unsigned char* input);
        void* Cipher(void* input, int length=0);
        void* InvCipher(void* input, int length);   
        void Cipher(char *input, char *output); 
        unsigned char Sbox[256];    
        unsigned char InvSbox[256]; 
        unsigned char w[11][4][4];  
        void KeyExpansion(unsigned char* key, unsigned char w[][4][4]); 
        unsigned char FFmul(unsigned char a, unsigned char b);  
        void SubBytes(unsigned char state[][4]);
        void ShiftRows(unsigned char state[][4]);   
        void MixColumns(unsigned char state[][4]);  
        void AddRoundKey(unsigned char state[][4], unsigned char k[][4]);   
        void InvSubBytes(unsigned char state[][4]); 
        void InvShiftRows(unsigned char state[][4]);    
        void InvMixColumns(unsigned char state[][4]);
        int strToHex(const char *ch, char *hex);
        int hexToStr(const char *hex, char *ch);
        int ascillToValue(const char ch);
        char valueToHexCh(const int value);
        int getUCharLen(const unsigned char *uch);
        int getUChar16Len(const unsigned char *uch);
        int strToUChar(const char *ch, unsigned char *uch);
        int ucharToStr(const unsigned char *uch, char *ch);
        int ucharToHex(const unsigned char *uch, char *hex);
        int hexToUChar(const char *hex, unsigned char *uch);
    };
    #endif

AES.cpp：

// AES.cpp: implementation of the AES class.
    //
    //////////////////////////////////////////////////////////////////////
    
    #include "stdio.h"
    #include "memory.h"
    #include "time.h"
    #include "stdlib.h"
    #include "AES.h"
    //////////////////////////////////////////////////////////////////////
    // Construction/Destruction
    //////////////////////////////////////////////////////////////////////
    
    AES::AES(unsigned char* key)
    {
      unsigned char sBox[] =
      { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
    
        0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76, /*0*/
    
        0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0, /*1*/
    
        0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15, /*2*/
    
        0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75, /*3*/
    
        0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84, /*4*/
    
        0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf, /*5*/
    
        0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8, /*6*/
    
        0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2, /*7*/
    
        0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73, /*8*/
    
        0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb, /*9*/
    
        0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79, /*a*/
    
        0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08, /*b*/
    
        0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a, /*c*/
    
        0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e, /*d*/
    
        0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf, /*e*/
    
        0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16 /*f*/
      };
    
      unsigned char invsBox[256] =
      { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
    
        0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb, /*0*/
    
        0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb, /*1*/
    
        0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e, /*2*/
    
        0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25, /*3*/
    
        0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92, /*4*/
    
        0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84, /*5*/
    
        0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06, /*6*/
    
        0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b, /*7*/
    
        0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73, /*8*/
    
        0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e, /*9*/
    
        0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b, /*a*/
    
        0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4, /*b*/
    
        0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f, /*c*/
    
        0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef, /*d*/
    
        0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61, /*e*/
    
        0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d /*f*/
      };
    
      memcpy(Sbox, sBox, 256);
      memcpy(InvSbox, invsBox, 256);
      KeyExpansion(key, w);
    }
    
    AES::~AES()
    {
    }
    
    void AES::Cipher(char *input, char *output)
    {
      unsigned char uch_input[1024];
      strToUChar(input, uch_input);
      Cipher(uch_input);
      ucharToHex(uch_input,output);
    }
    
     /********************************************* * 函数名： AES::Bm53Cipher * 描述： 整段文档加密 * @参数： char *input * @参数： char *output * @返回值： void *********************************************/
    void AES::Bm53Cipher(char *input, char *output)
    {
        int nLen = strlen(input);
        char * newAlock = (char*)malloc(strlen(input)+(16-nLen%16)+1);
        strcpy(newAlock,input);
        for (int n=0;n<(16-nLen%16);n++)
        {
            newAlock[nLen+n] = (16-nLen%16);
        }
        newAlock[nLen + (16-nLen%16)] = 0;
        int i=0,j=0;
        char block[16],e_block[32];
        while (newAlock[i]!='\0')
        {
            strncpy(block,newAlock+i,16);
            Cipher(block,e_block);
            strncpy(output+j,e_block,32);
            i+=16;
            j+=32;
        }
        output[j]='\0';
        free(newAlock);
    }
    
    
    void AES::InvCipher(char *input, char *output)
    {
      unsigned char uch_input[1024]= {
       0};
      hexToUChar(input, uch_input);
      InvCipher(uch_input);
      ucharToStr(uch_input, output);
    }
     /********************************************* * 函数名： AES::Bm53InvCipher * 描述： 对整段文字解密 * @参数： char *input 16进制密文 * @参数： char *output 原文 * @返回值： void *********************************************/
    void AES::Bm53InvCipher(char *input, char *output)
    {
        unsigned char *uch_input = (unsigned char *)malloc(strlen(input)/2);    
        unsigned char *uch_output = (unsigned char *)malloc(strlen(output));
        hexToUChar(input, uch_input);
        int nBuf = 0;
        unsigned char ublock[16];
        int n= strlen(input);
        while(nBuf<(int)strlen(input)/2)
        {
            memcpy(ublock,uch_input+nBuf,16);
            InvCipher(ublock);
            memcpy(uch_output+nBuf,ublock,16);
            nBuf+=16;
        }
        uch_output[nBuf] = 0;//封闭字符串
        ucharToStr(uch_output,output);
        //剔除用于补充16字节的字符
        int nLen = strlen(output);
        for (n=nLen-1;n>=nLen-16;n--)
        {
            if (1<=output[n]&&16>=output[n])
            {
                output[n] = 0;
            }
            else
            {
                break;
            }
        }
    }
    
    unsigned char* AES::Cipher(unsigned char* input)
    {
      unsigned char state[4][4];
      int i,r,c;
      for(r=0; r<4; r++)
      {
        for(c=0; c<4 ;c++)
        {
          state[r][c] = input[c*4+r];
        }
      }
      AddRoundKey(state,w[0]);
      for(i=1; i<=10; i++)
      {
        SubBytes(state);
        ShiftRows(state);
        if(i!=10)MixColumns(state);
        AddRoundKey(state,w[i]);
      }
    
      for(r=0; r<4; r++)
      {
        for(c=0; c<4 ;c++)
        {
          input[c*4+r] = state[r][c];
        }
      }
      return input;
    }
    
    
    
    unsigned char* AES::InvCipher(unsigned char* input)
    {
      unsigned char state[4][4];
      int i,r,c;
    
      for(r=0; r<4; r++)
      {
        for(c=0; c<4 ;c++)
        {
          state[r][c] = input[c*4+r];
        }
      }
    
      AddRoundKey(state, w[10]);
      for(i=9; i>=0; i--)
      {
        InvShiftRows(state);
        InvSubBytes(state);
        AddRoundKey(state, w[i]);
        if(i)
        {
          InvMixColumns(state);
        }
      }
    
      for(r=0; r<4; r++)
      {
        for(c=0; c<4 ;c++)
        {
          input[c*4+r] = state[r][c];
        }
      }
    
      return input;
    }
    
    
    
    void* AES::Cipher(void* input, int length)
    {
    
      unsigned char* in = (unsigned char*) input;
      int i;
    
      if(!length)
      {
        while(*(in+length++));
        in = (unsigned char*) input;
      }
    
      for(i=0; i<length; i+=16)
      {
        Cipher(in+i);
      }
    
      return input;
    }
    
    
    
    void* AES::InvCipher(void* input, int length)
    {
      unsigned char* in = (unsigned char*) input;
      int i;
      for(i=0; i<length; i+=16)
      {
        InvCipher(in+i);
      }
      return input;
    }
    
    
    
    void AES::KeyExpansion(unsigned char* key, unsigned char w[][4][4])
    {
      int i,j,r,c;
      unsigned char rc[] = {
       0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};
    
      for(r=0; r<4; r++)
      {
        for(c=0; c<4; c++)
        {
          w[0][r][c] = key[r+c*4];
        }
      }
    
      for(i=1; i<=10; i++)
      {
        for(j=0; j<4; j++)
        {
          unsigned char t[4];
          for(r=0; r<4; r++)
          {
            t[r] = j ? w[i][r][j-1] : w[i-1][r][3];
          }
          if(j == 0)
          {
            unsigned char temp = t[0];
            for(r=0; r<3; r++)
            {
              t[r] = Sbox[t[(r+1)%4]];
            }
            t[3] = Sbox[temp];
            t[0] ^= rc[i-1];
          }
    
          for(r=0; r<4; r++)
          {
            w[i][r][j] = w[i-1][r][j] ^ t[r];
          }
        }
      }
    }
    
    
    
    unsigned char AES::FFmul(unsigned char a, unsigned char b)
    {
      unsigned char bw[4];
      unsigned char res=0;
      int i;
    
      bw[0] = b;
    
      for(i=1; i<4; i++)
      {
        bw[i] = bw[i-1]<<1;
        if(bw[i-1]&0x80)
        {
          bw[i]^=0x1b;
        }
      }
    
      for(i=0; i<4; i++)
      {
        if((a>>i)&0x01)
        {
          res ^= bw[i];
        }
      }
      return res;
    }
    
    
    
    void AES::SubBytes(unsigned char state[][4])
    {
      int r,c;
      for(r=0; r<4; r++)
      {
        for(c=0; c<4; c++)
        {
          state[r][c] = Sbox[state[r][c]];
        }
      }
    }
    
    
    
    void AES::ShiftRows(unsigned char state[][4])
    {
      unsigned char t[4];
      int r,c;
    
      for(r=1; r<4; r++)
      {
        for(c=0; c<4; c++)
        {
          t[c] = state[r][(c+r)%4];
        }
        for(c=0; c<4; c++)
        {
          state[r][c] = t[c];
        }
      }
    }
    
    
    
    void AES::MixColumns(unsigned char state[][4])
    {
      unsigned char t[4];
      int r,c;
    
      for(c=0; c< 4; c++)
      {
        for(r=0; r<4; r++)
        {
          t[r] = state[r][c];
        }
        for(r=0; r<4; r++)
        {
          state[r][c] = FFmul(0x02, t[r])
    
                ^ FFmul(0x03, t[(r+1)%4])
    
                ^ FFmul(0x01, t[(r+2)%4])
    
                ^ FFmul(0x01, t[(r+3)%4]);
        }
      }
    }
    
    void AES::AddRoundKey(unsigned char state[][4], unsigned char k[][4])
    {
      int r,c;
      for(c=0; c<4; c++)
      {
        for(r=0; r<4; r++)
        {
          state[r][c] ^= k[r][c];
        }
      }
    }
    
    void AES::InvSubBytes(unsigned char state[][4])
    {
      int r,c;
      for(r=0; r<4; r++)
      {
        for(c=0; c<4; c++)
        {
          state[r][c] = InvSbox[state[r][c]];
        }
      }
    }
    
    void AES::InvShiftRows(unsigned char state[][4])
    {
      unsigned char t[4];
      int r,c;
    
      for(r=1; r<4; r++)
      {
        for(c=0; c<4; c++)
        {
          t[c] = state[r][(c-r+4)%4];
        }
    
        for(c=0; c<4; c++)
        {
          state[r][c] = t[c];
        }
      }
    }
    
    void AES::InvMixColumns(unsigned char state[][4])
    {
      unsigned char t[4];
      int r,c;
    
      for(c=0; c< 4; c++)
      {
        for(r=0; r<4; r++)
        {
          t[r] = state[r][c];
        }
    
        for(r=0; r<4; r++)
        {
          state[r][c] = FFmul(0x0e, t[r])
    
                ^ FFmul(0x0b, t[(r+1)%4])
    
                ^ FFmul(0x0d, t[(r+2)%4])
    
                ^ FFmul(0x09, t[(r+3)%4]);
    
        }
      }
    }
    
    int AES::getUCharLen(const unsigned char *uch)
    {
      int len = 0;
      while(*uch++)
        ++len;
    
      return len;
    }
    
    int AES::getUChar16Len(const unsigned char *uch)
    {
      return 16;
    }
    
    
    int AES::ucharToHex(const unsigned char *uch, char *hex)
    {
      int high,low,i= 0;
      int tmp = 0;
    
      if(uch == NULL || hex == NULL){
        return -1;
      }
    
      int len= getUChar16Len(uch);
      if(len == 0){
        return -2;
      }
    
      while(i< len){
        tmp = (int)*uch;
        high = tmp >> 4;
        low = tmp & 15;
        *hex++ = valueToHexCh(high); //先写高字节
        *hex++ = valueToHexCh(low); //其次写低字节
        i++;
        uch++;
      }
    
      *hex = '\0';
      return 0;
    }
    
    int AES::hexToUChar(const char *hex, unsigned char *uch)
    {
      int high,low;
      int tmp = 0;
    
      if(hex == NULL || uch == NULL){
        return -1;
      }
    
      if(strlen(hex) %2 == 1){
        return -2;
      }
      while(*hex){
        high = ascillToValue(*hex);
        if(high < 0){
          *uch = '\0';
          return -3;
        }
    
        hex++; //指针移动到下一个字符上
        low = ascillToValue(*hex);
    
        if(low < 0){
          *uch = '\0';
          return -3;
        }
        tmp = (high << 4) + low;
        *uch++ = tmp;
        hex++;
      }
      *uch = (int)'\0';
      return 0;
    }
    
    int AES::strToUChar(const char *ch, unsigned char *uch)
    {
      int tmp = 0;
      if(ch == NULL || uch == NULL)
        return -1;
    
      if(strlen(ch) == 0)
        return -2;
      while(*ch){
        tmp = (int)*ch;
        *uch++ = tmp;
        ch++;
      }
      *uch = (int)'\0';
      return 0;
    }
    
    int AES::ucharToStr(const unsigned char *uch, char *ch)
    {
      int tmp = 0;
      if(uch == NULL || ch == NULL)
        return -1;
      while(*uch){
        tmp = (int)*uch;
        *ch++ = (char)tmp;
        uch++;
      }
    
      *ch = '\0';
      return 0;
    }
    
    int AES::strToHex(const char *ch, char *hex)
    {
      int high,low;
      int tmp = 0;
      if(ch == NULL || hex == NULL){
        return -1;
      }
    
      if(strlen(ch) == 0){
        return -2;
      }
    
      while(*ch){
        tmp = (int)*ch;
        high = tmp >> 4;
        low = tmp & 15;
        *hex++ = valueToHexCh(high); //先写高字节
        *hex++ = valueToHexCh(low); //其次写低字节
        ch++;
      }
    
      *hex = '\0';
      return 0;
    }
    
    int AES::hexToStr(const char *hex, char *ch)
    {
      int high,low;
      int tmp = 0;
    
      if(hex == NULL || ch == NULL){
        return -1;
      }
    
      if(strlen(hex) %2 == 1){
        return -2;
      }
    
      while(*hex){
        high = ascillToValue(*hex);
        if(high < 0){
          *ch = '\0';
          return -3;
        }
    
        hex++; //指针移动到下一个字符上
        low = ascillToValue(*hex);
    
        if(low < 0){
          *ch = '\0';
          return -3;
        }
    
        tmp = (high << 4) + low;
        *ch++ = (char)tmp;
        hex++;
      }
    
      *ch = '\0';
      return 0;
    }
    
    int AES::ascillToValue(const char ch){
      int result = 0;
      //获取16进制的高字节位数据
      if(ch >= '0' && ch <= '9'){
        result = (int)(ch - '0');
      }
      else if(ch >= 'a' && ch <= 'z'){
        result = (int)(ch - 'a') + 10;
      }
      else if(ch >= 'A' && ch <= 'Z'){
        result = (int)(ch - 'A') + 10;
      }
      else{
        result = -1;
      }
    
      return result;
    }
    
    char AES::valueToHexCh(const int value)
    {
      char result = '\0';
      if(value >= 0 && value <= 9){
        result = (char)(value + 48); //48为ascii编码的‘0’字符编码值
      }
      else if(value >= 10 && value <= 15){
        result = (char)(value - 10 + 65); //减去10则找出其在16进制的偏移量，65为ascii的'A'的字符编码值
      }
      else{
        ;
      }
      return result;
    }

测试代码 test.cpp

#include <stdio.h>
    #include "AES.h"
    
    int main(int argc, char *argv[])
    {   
        char before[] = "123456";   
        char after[1024]={
       0};
        char result[1024]={
       0};
        unsigned char key[] = "helloworld";
        //加密函数
        AES aes(key);
        aes.Bm53Cipher(before,after);
        printf("密钥:%s\n",key);
        printf("加密前:%s\n",before);
        printf("加密后:%s\n",after);
        //解密函数
        aes.Bm53InvCipher(after, result);   
        printf("解密前:%s\n",after);
        printf("解密后:%s\n",result);
        getchar();
        return 0;
    }

其中函数getUChar16Len固定返回16，为固定长度

### Java版本 ###

import java.io.UnsupportedEncodingException;
    import java.security.InvalidKeyException;
    import java.security.Key;
    import java.security.NoSuchAlgorithmException;
    import java.security.Security;
    
    import javax.crypto.BadPaddingException;
    import javax.crypto.Cipher;
    import javax.crypto.IllegalBlockSizeException;
    import javax.crypto.NoSuchPaddingException;
    
    public class EncrypAES { 
        /** 默认密钥，实际项目中可配置注入或数据库读取 */
        private static String defaultKey = "helloworld";
    
        /** 加密工具 */
        private Cipher encryptCipher = null;
    
        /** 解密工具 */
        private Cipher decryptCipher = null;
    
        private static EncrypAES instance = new EncrypAES(defaultKey);
    
        public static EncrypAES getInstance() {
           return instance;
        }
    
        public EncrypAES(String keyvalue) {
           Security.addProvider(new com.sun.crypto.provider.SunJCE());
           if (keyvalue == null)
               keyvalue = defaultKey;
           byte[] arrBTmp = null;
           try {
               arrBTmp = keyvalue.getBytes("utf-8");
           } catch (UnsupportedEncodingException e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
           }
           // 创建一个空的length位字节数组（默认值为0）
           byte[] arrB = new byte[16];
    
           // 将原始字节数组转换为8位
           for (int i = 0; i < arrBTmp.length && i < arrB.length; i++) {
               arrB[i] = arrBTmp[i];
           }
           // 生成密钥
           Key key = new javax.crypto.spec.SecretKeySpec(arrB, "AES");
    
           // 生成Cipher对象,指定其支持的DES算法
           try {
               encryptCipher = Cipher.getInstance("AES");
               encryptCipher.init(Cipher.ENCRYPT_MODE, key);
    
               decryptCipher = Cipher.getInstance("AES");
               decryptCipher.init(Cipher.DECRYPT_MODE, key);
           } catch (NoSuchAlgorithmException e) {
               e.printStackTrace();
           } catch (NoSuchPaddingException e) {
               e.printStackTrace();
           } catch (InvalidKeyException e) {
               e.printStackTrace();
           }
        }
    
        /** * 对字符串加密 * * @param str * @return * @throws InvalidKeyException * @throws IllegalBlockSizeException * @throws BadPaddingException */
        public String encrytor(String str) throws InvalidKeyException,
               IllegalBlockSizeException, BadPaddingException {
           byte[] src = null;
           try {
               src = str.getBytes("utf-8");
           } catch (UnsupportedEncodingException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
           }
           return parseByte2HexStr(encryptCipher.doFinal(src));
        }
    
        /** * 对字符串解密 * * @param buff * @return * @throws InvalidKeyException * @throws IllegalBlockSizeException * @throws BadPaddingException */
        public String decryptor(String buff) throws InvalidKeyException,
               IllegalBlockSizeException, BadPaddingException {
           return new String(decryptCipher.doFinal(parseHexStr2Byte(buff)));
        }
    
        /** * @param args * @throws NoSuchPaddingException * @throws NoSuchAlgorithmException * @throws BadPaddingException * @throws IllegalBlockSizeException * @throws InvalidKeyException */
        public static void main(String[] args) throws Exception {
           EncrypAES de1 = new EncrypAES("helloworld");
           String msg = "1";
           String demsg = null;
    
           System.out.println("明文是:" + msg);
           demsg = de1.encrytor(msg);
           System.out.println("加密后:" + demsg);
           System.out.println("解密后:" + de1.decryptor(demsg));
        }
    
        public static byte[] parseHexStr2Byte(String hexStr) {
           if (hexStr.length() < 1)
               return null;
           byte[] result = new byte[hexStr.length() / 2];
           for (int i = 0; i < hexStr.length() / 2; i++) {
               int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
               int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2),
                      16);
               result[i] = (byte) (high * 16 + low);
           }
           return result;
        }
    
        public static String parseByte2HexStr(byte buf[]) {
           StringBuffer sb = new StringBuffer();
           for (int i = 0; i < buf.length; i++) {
               String hex = Integer.toHexString(buf[i] & 0xFF);
               if (hex.length() == 1) {
                  hex = '0' + hex;
               }
               sb.append(hex.toUpperCase());
           }
           return sb.toString();
        }
    }

此版本加密后的密文为32位，经测试java与c++方法生成密文一致！  
以上代码仅为个人愚见，如果错误请指出！