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标题:
开源一个alchemy的AES加密解密库，欢迎拍砖
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作者:
破晓
时间:
2015-4-7 10:36
标题:
开源一个alchemy的AES加密解密库，欢迎拍砖
最近研究了一下alchemy，网上找了Aes算法C语言实现，写了个简单的加密解密功能。
//========================================================
// AlchemyAes
// a library for actionscript3 use the AES Encrypt function in alchemy C/C++ code
//@filename alchemyLib.cpp
//@date 2011.12.11
//@auther noahwang
//@email noahwang@usa.com
//========================================================
#include "AS3.h"
#include "alchemyLib.h"
AS3_Val doAes(void *data, AS3_Val args)
{
AS3_Val input = NULL;
unsigned int in_len;
char * ar;
AS3_ArrayValue(args, "AS3ValType, IntType", &input, &in_len);
ar = (char *)malloc(in_len);
AS3_ByteArray_readBytes((void*)ar, input, in_len);
char * aesData;
int out_len = 0;
char * keyStr = "hizaozao";
//use AES to Encrypt the bytes
aesData = DES_Encrypt(ar, keyStr, in_len, out_len );
//make a new as3 byteArray var
AS3_Val baNS = AS3_String("flash.utils");
AS3_Val baClass = AS3_NSGetS(baNS, "ByteArray");
AS3_Val emptyParams = AS3_Array("");
AS3_Val byteArray2 = AS3_New(baClass, emptyParams);
AS3_ByteArray_writeBytes(byteArray2, aesData, out_len);
return byteArray2;
}
AS3_Val doUnAes(void *data, AS3_Val args)
{
AS3_Val input = NULL;
unsigned int in_len;
char * ar;
AS3_ArrayValue(args, "AS3ValType, IntType", &input, &in_len);
ar = (char *)malloc(in_len);
AS3_ByteArray_readBytes((void*)ar, input, in_len);
char * aesData;
int out_len = 0;
char * keyStr = "hizaozao";
//use AES to Decrypt the bytes
aesData = DES_Decrypt(ar, keyStr, in_len, out_len );
//make a new as3 byteArray var
AS3_Val baNS = AS3_String("flash.utils");
AS3_Val baClass = AS3_NSGetS(baNS, "ByteArray");
AS3_Val emptyParams = AS3_Array("");
AS3_Val byteArray2 = AS3_New(baClass, emptyParams);
AS3_ByteArray_writeBytes(byteArray2, aesData, out_len);
return byteArray2;
}
int main(int argc, char *argv[])
{
// regular function
AS3_Val doAesVal = AS3_Function(NULL, doAes);
// async function
AS3_Val doUnAesVal = AS3_Function(NULL, doUnAes);
// construct an object that holds refereces to the 2 functions
AS3_Val result = AS3_Object("doAes: AS3ValType, doUnAes: AS3ValType",
doAesVal, doUnAesVal);
AS3_Release(doAesVal);
AS3_Release(doUnAesVal);
// notify that we initialized -- THIS DOES NOT RETURN!
AS3_LibInit(result);
return 0;
}
复制代码
//========================================================
// AlchemyAes
// a library for actionscript3 use the AES Encrypt function in alchemy C/C++ code
//@filename alchemyLib.h
//@date 2011.12.11
//@auther noahwang
//@email noahwang@usa.com
//========================================================
#include "aes.h"
复制代码
//========================================================
// AlchemyAes
// a library for actionscript3 use the AES Encrypt function in alchemy C/C++ code
//@filename aes.c
//@date 2011.12.11
//@auther noahwang
//@email noahwang@usa.com
//========================================================
#include "stdio.h"
#include "string.h"
#include "time.h"
#include "stdlib.h"
#ifndef __AES_H__
#define __AES_H__
typedef char ElemType;
int ByteToBit(ElemType ch,ElemType bit[8]);
int BitToByte(ElemType bit[8],ElemType *ch);
int Char8ToBit64(ElemType ch[8],ElemType bit[64]);
int Bit64ToChar8(ElemType bit[64],ElemType ch[8]);
int DES_MakeSubKeys(ElemType key[64],ElemType subKeys[16][48]);
int DES_PC1_Transform(ElemType key[64], ElemType tempbts[56]);
int DES_PC2_Transform(ElemType key[56], ElemType tempbts[48]);
int DES_ROL(ElemType data[56], int time);
int DES_IP_Transform(ElemType data[64]);
int DES_IP_1_Transform(ElemType data[64]);
int DES_E_Transform(ElemType data[48]);
int DES_P_Transform(ElemType data[32]);
int DES_SBOX(ElemType data[48]);
int DES_XOR(ElemType R[48], ElemType L[48],int count);
int DES_Swap(ElemType left[32],ElemType right[32]);
int DES_EncryptBlock(ElemType plainBlock[8], ElemType subKeys[16][48], ElemType cipherBlock[8]);
int DES_DecryptBlock(ElemType cipherBlock[8], ElemType subKeys[16][48], ElemType plainBlock[8]);
char * DES_Encrypt(char *plainFile, char *keyStr,int in_len, int & out_len);
char * DES_Decrypt(char *cipherFile, char *keyStr,int in_len, int & out_len);
#endif //__AES_H__
复制代码
//========================================================
// AlchemyAes
// a library for actionscript3 use the AES Encrypt function in alchemy C/C++ code
//@filename aes.h
//@date 2011.12.11
//@auther noahwang
//@email noahwang@usa.com
//========================================================
#include "aes.h"
/*初始置换表IP*/
int IP_Table[64] = { 57,49,41,33,25,17,9,1,
59,51,43,35,27,19,11,3,
61,53,45,37,29,21,13,5,
63,55,47,39,31,23,15,7,
56,48,40,32,24,16,8,0,
58,50,42,34,26,18,10,2,
60,52,44,36,28,20,12,4,
62,54,46,38,30,22,14,6};
/*逆初始置换表IP^-1*/
int IP_1_Table[64] = {39,7,47,15,55,23,63,31,
38,6,46,14,54,22,62,30,
37,5,45,13,53,21,61,29,
36,4,44,12,52,20,60,28,
35,3,43,11,51,19,59,27,
34,2,42,10,50,18,58,26,
33,1,41,9,49,17,57,25,
32,0,40,8,48,16,56,24};
/*扩充置换表E*/
int E_Table[48] = {31, 0, 1, 2, 3, 4,
3, 4, 5, 6, 7, 8,
7, 8,9,10,11,12,
11,12,13,14,15,16,
15,16,17,18,19,20,
19,20,21,22,23,24,
23,24,25,26,27,28,
27,28,29,30,31, 0};
/*置换函数P*/
int P_Table[32] = {15,6,19,20,28,11,27,16,
0,14,22,25,4,17,30,9,
1,7,23,13,31,26,2,8,
18,12,29,5,21,10,3,24};
/*S盒*/
int S[8][4][16] =
/*S1*/
{{{14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7},
{0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8},
{4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0},
{15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13}},
/*S2*/
{{15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10},
{3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5},
{0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15},
{13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9}},
/*S3*/
{{10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8},
{13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1},
{13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7},
{1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12}},
/*S4*/
{{7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15},
{13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9},
{10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4},
{3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14}},
/*S5*/
{{2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9},
{14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6},
{4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14},
{11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3}},
/*S6*/
{{12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11},
{10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8},
{9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6},
{4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13}},
/*S7*/
{{4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1},
{13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6},
{1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2},
{6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12}},
/*S8*/
{{13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7},
{1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2},
{7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8},
{2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11}}};
/*置换选择1*/
int PC_1[56] = {56,48,40,32,24,16,8,
0,57,49,41,33,25,17,
9,1,58,50,42,34,26,
18,10,2,59,51,43,35,
62,54,46,38,30,22,14,
6,61,53,45,37,29,21,
13,5,60,52,44,36,28,
20,12,4,27,19,11,3};
/*置换选择2*/
int PC_2[48] = {13,16,10,23,0,4,2,27,
14,5,20,9,22,18,11,3,
25,7,15,6,26,19,12,1,
40,51,30,36,46,54,29,39,
50,44,32,46,43,48,38,55,
33,52,45,41,49,35,28,31};
/*对左移次数的规定*/
int MOVE_TIMES[16] = {1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};
/*字节转换成二进制*/
int ByteToBit(ElemType ch, ElemType bit[8]){
int cnt;
for(cnt = 0;cnt < 8; cnt++){
*(bit+cnt) = (ch>>cnt)&1;
}
return 0;
}
/*二进制转换成字节*/
int BitToByte(ElemType bit[8],ElemType *ch){
int cnt;
for(cnt = 0;cnt < 8; cnt++){
*ch |= *(bit + cnt)<<cnt;
}
return 0;
}
/*将长度为8的字符串转为二进制位串*/
int Char8ToBit64(ElemType ch[8],ElemType bit[64]){
int cnt;
for(cnt = 0; cnt < 8; cnt++){
ByteToBit(*(ch+cnt),bit+(cnt<<3));
}
return 0;
}
/*将二进制位串转为长度为8的字符串*/
int Bit64ToChar8(ElemType bit[64],ElemType ch[8]){
int cnt;
memset(ch,0,8);
for(cnt = 0; cnt < 8; cnt++){
BitToByte(bit+(cnt<<3),ch+cnt);
}
return 0;
}
/*生成子密钥*/
int DES_MakeSubKeys(ElemType key[64],ElemType subKeys[16][48]){
ElemType temp[56];
int cnt;
DES_PC1_Transform(key,temp);/*PC1置换*/
for(cnt = 0; cnt < 16; cnt++){/*16轮跌代，产生16个子密钥*/
DES_ROL(temp,MOVE_TIMES[cnt]);/*循环左移*/
DES_PC2_Transform(temp,subKeys[cnt]);/*PC2置换，产生子密钥*/
}
return 0;
}
/*密钥置换1*/
int DES_PC1_Transform(ElemType key[64], ElemType tempbts[56]){
int cnt;
for(cnt = 0; cnt < 56; cnt++){
tempbts[cnt] = key[PC_1[cnt]];
}
return 0;
}
/*密钥置换2*/
int DES_PC2_Transform(ElemType key[56], ElemType tempbts[48]){
int cnt;
for(cnt = 0; cnt < 48; cnt++){
tempbts[cnt] = key[PC_2[cnt]];
}
return 0;
}
/*循环左移*/
int DES_ROL(ElemType data[56], int time){
ElemType temp[56];
/*保存将要循环移动到右边的位*/
memcpy(temp,data,time);
memcpy(temp+time,data+28,time);
/*前28位移动*/
memcpy(data,data+time,28-time);
memcpy(data+28-time,temp,time);
/*后28位移动*/
memcpy(data+28,data+28+time,28-time);
memcpy(data+56-time,temp+time,time);
return 0;
}
/*IP置换*/
int DES_IP_Transform(ElemType data[64]){
int cnt;
ElemType temp[64];
for(cnt = 0; cnt < 64; cnt++){
temp[cnt] = data[IP_Table[cnt]];
}
memcpy(data,temp,64);
return 0;
}
/*IP逆置换*/
int DES_IP_1_Transform(ElemType data[64]){
int cnt;
ElemType temp[64];
for(cnt = 0; cnt < 64; cnt++){
temp[cnt] = data[IP_1_Table[cnt]];
}
memcpy(data,temp,64);
return 0;
}
/*扩展置换*/
int DES_E_Transform(ElemType data[48]){
int cnt;
ElemType temp[48];
for(cnt = 0; cnt < 48; cnt++){
temp[cnt] = data[E_Table[cnt]];
}
memcpy(data,temp,48);
return 0;
}
/*P置换*/
int DES_P_Transform(ElemType data[32]){
int cnt;
ElemType temp[32];
for(cnt = 0; cnt < 32; cnt++){
temp[cnt] = data[P_Table[cnt]];
}
memcpy(data,temp,32);
return 0;
}
/*异或*/
int DES_XOR(ElemType R[48], ElemType L[48] ,int count){
int cnt;
for(cnt = 0; cnt < count; cnt++){
R[cnt] ^= L[cnt];
}
return 0;
}
/*S盒置换*/
int DES_SBOX(ElemType data[48]){
int cnt;
int line,row,output;
int cur1,cur2;
for(cnt = 0; cnt < 8; cnt++){
cur1 = cnt*6;
cur2 = cnt<<2;
/*计算在S盒中的行与列*/
line = (data[cur1]<<1) + data[cur1+5];
row = (data[cur1+1]<<3) + (data[cur1+2]<<2)
+ (data[cur1+3]<<1) + data[cur1+4];
output = S[cnt][line][row];
/*化为2进制*/
data[cur2] = (output&0X08)>>3;
data[cur2+1] = (output&0X04)>>2;
data[cur2+2] = (output&0X02)>>1;
data[cur2+3] = output&0x01;
}
return 0;
}
/*交换*/
int DES_Swap(ElemType left[32], ElemType right[32]){
ElemType temp[32];
memcpy(temp,left,32);
memcpy(left,right,32);
memcpy(right,temp,32);
return 0;
}
/*加密单个分组*/
int DES_EncryptBlock(ElemType plainBlock[8], ElemType subKeys[16][48], ElemType cipherBlock[8]){
ElemType plainBits[64];
ElemType copyRight[48];
int cnt;
Char8ToBit64(plainBlock,plainBits);
/*初始置换（IP置换）*/
DES_IP_Transform(plainBits);
/*16轮迭代*/
for(cnt = 0; cnt < 16; cnt++){
memcpy(copyRight,plainBits+32,32);
/*将右半部分进行扩展置换，从32位扩展到48位*/
DES_E_Transform(copyRight);
/*将右半部分与子密钥进行异或操作*/
DES_XOR(copyRight,subKeys[cnt],48);
/*异或结果进入S盒，输出32位结果*/
DES_SBOX(copyRight);
/*P置换*/
DES_P_Transform(copyRight);
/*将明文左半部分与右半部分进行异或*/
DES_XOR(plainBits,copyRight,32);
if(cnt != 15){
/*最终完成左右部的交换*/
DES_Swap(plainBits,plainBits+32);
}
}
/*逆初始置换（IP^1置换）*/
DES_IP_1_Transform(plainBits);
Bit64ToChar8(plainBits,cipherBlock);
return 0;
}
/*解密单个分组*/
int DES_DecryptBlock(ElemType cipherBlock[8], ElemType subKeys[16][48],ElemType plainBlock[8]){
ElemType cipherBits[64];
ElemType copyRight[48];
int cnt;
Char8ToBit64(cipherBlock,cipherBits);
/*初始置换（IP置换）*/
DES_IP_Transform(cipherBits);
/*16轮迭代*/
for(cnt = 15; cnt >= 0; cnt--){
memcpy(copyRight,cipherBits+32,32);
/*将右半部分进行扩展置换，从32位扩展到48位*/
DES_E_Transform(copyRight);
/*将右半部分与子密钥进行异或操作*/
DES_XOR(copyRight,subKeys[cnt],48);
/*异或结果进入S盒，输出32位结果*/
DES_SBOX(copyRight);
/*P置换*/
DES_P_Transform(copyRight);
/*将明文左半部分与右半部分进行异或*/
DES_XOR(cipherBits,copyRight,32);
if(cnt != 0){
/*最终完成左右部的交换*/
DES_Swap(cipherBits,cipherBits+32);
}
}
/*逆初始置换（IP^1置换）*/
DES_IP_1_Transform(cipherBits);
Bit64ToChar8(cipherBits,plainBlock);
return 0;
}
/*加密文件*/
char * DES_Encrypt(char *plainFile, char *keyStr,int in_len, int & out_len){
int iii = 0;
char *cipherFile;
int count = in_len % 8;
int len = 0;
int times = in_len / 8;
cipherFile = (char*)malloc(times * 8 + (count !=0)?8:0);
ElemType plainBlock[8],cipherBlock[8],keyBlock[8];
ElemType bKey[64];
ElemType subKeys[16][48];
/*设置密钥*/
memcpy(keyBlock,keyStr,8);
/*将密钥转换为二进制流*/
Char8ToBit64(keyBlock,bKey);
/*生成子密钥*/
DES_MakeSubKeys(bKey,subKeys);
while(times--){
/*每次读8个字节*/
memcpy(plainBlock, (plainFile + len),8);
DES_EncryptBlock(plainBlock,subKeys,cipherBlock);
memcpy( (cipherFile + len), cipherBlock,8);
len += 8;
}
if(count){
memcpy(plainBlock, (plainFile + len),8);
/*填充*/
memset(plainBlock + count,'\0',7 - count);
/*最后一个字符保存包括最后一个字符在内的所填充的字符数量*/
plainBlock[7] = 8 - count;
DES_EncryptBlock(plainBlock,subKeys,cipherBlock);
memcpy((cipherFile + len), cipherBlock,8);
len += 8;
}
iii = 0;
out_len = len;
return cipherFile;
}
/*解密文件*/
char * DES_Decrypt(char *cipherFile, char *keyStr,int in_len, int & out_len){
int iii = 0;
//printf("密文:\n");
//for(;iii<in_len;iii++){
//printf("%d", *(cipherFile + iii));
// }
// printf("\n");
char *plainFile;
int len = 0;
int count = 0;
int times = in_len / 8;
plainFile = (char*)malloc(in_len);
ElemType plainBlock[8],cipherBlock[8],keyBlock[8];
ElemType bKey[64];
ElemType subKeys[16][48];
/*设置密钥*/
memcpy(keyBlock,keyStr,8);
/*将密钥转换为二进制流*/
Char8ToBit64(keyBlock,bKey);
/*生成子密钥*/
DES_MakeSubKeys(bKey,subKeys);
//printf("times: %d \n", times);
while(times--){
/*密文的字节数一定是8的整数倍*/
//printf("times: %d \n", times);
memcpy(cipherBlock, (cipherFile + len),8);
DES_DecryptBlock(cipherBlock,subKeys,plainBlock);
if(times > 0){
memcpy((plainFile + len), plainBlock,8);
len += 8;
}else{
break;
}
}
/*判断末尾是否被填充*/
if(plainBlock[7] < 8){
for(count = 8 - plainBlock[7]; count < 7; count++){
if(plainBlock[count] != '\0'){
break;
}
}
}
printf("count: %d \n",plainBlock[7]);
if(count == 7){/*有填充*/
memcpy((plainFile + len), plainBlock,8 - plainBlock[7]);
len += 8 - plainBlock[7];
//fwrite(plainBlock,sizeof(char),8 - plainBlock[7],plain);
}
else{/*无填充*/
memcpy((plainFile + len), plainBlock,8);
len += 8;
//fwrite(plainBlock,sizeof(char),8,plain);
}
//printf("len: %d \n",len);
//iii = 0;
//printf("原文:\n");
// for(;iii<len;iii++){
// printf("%d", *(plainFile +iii));
// }
// printf("\n");
out_len = len;
return plainFile;
}
复制代码
AlchemyLibrary.as
package
{
import cmodule.alchemyLib.CLibInit;
import flash.display.Sprite;
import flash.utils.ByteArray;
/**
* AlchemyLibrary
* @date 2011.12.11
* @author noah
* @email noahwang@usa.com
*/
public class AlchemyLibrary extends Sprite
{
public function AlchemyLibrary()
{
var alchemyLib:CLibInit = new CLibInit;
var alchemyObj:Object = alchemyLib.init();
var by:ByteArray = new ByteArray();
by.writeUTFBytes("abcdefghijklmnopqrstuvwxyza");
by.position = 0;
trace("加密前长度: " + by.length);
var by2:ByteArray = alchemyObj.doAes(by, by.length);
if(by2){
by2.position = 0;
trace("加密后长度: " + by2.length);
var by3:ByteArray = alchemyObj.doUnAes(by2, by2.length);
if(by3){
by3.position = 0;
var len:uint = by3.length;
trace("解密后长度: " + by3.length);
var str:String = "";
while(len--){
str += by3.readUTFBytes(1);
}
trace(str);
}
}
}
}
}
复制代码
以上全部代码，
可以在sourceforge上直接提取项目和代码，欢迎提出宝贵意见。
svn://svn.code.sf.net/u/noahwang/code/trunk/
http://sourceforge.net/u/noahwang/code/3/tree/trunk/
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http://bbs.9ria.com/thread-106692-1-1.html
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