AES加密 java&c++版本

AES加密 java&c++版本

C++版本

#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: 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
&&16>=output
)
{
output
= 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;
}

#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;
}

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();
}
}