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效果
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效果
加密字符串:lxw 123abcD 2024-09-01:12:00加密后信息:042E82EE8ACE2BD56FA71DC6A0C34190627AA365F8EEE6261903BEE327A85EB5E1D6E78F2D79AD6F6DC9E45C0829625DC3165BB78BD897F99044A640F930653747939CF9D5A10C8216F945A55949D8B759FAC93638AD24321017C83331F213C7599802EA216083D6E6C1372C838B9F1AA756B11E8D3BFF6A294C7FCA61解密后信息:lxw 123abcD 2024-09-01:12:00
在线校验
地址:https://the-x.cn/cryptography/Sm2.aspx
代码实现参考
https://github.com/yaqiangxue/Test_SM2_encrypt_and_decrypt/tree/master
项目
代码
#include "StdAfx.h"
#include <iostream>
#include <string>
#include <cstring>
#include <memory>
#include <openssl/bio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include "sm2_cipher_error_codes.h"
#include "sm2_create_key_pair.h"
#include "sm2_encrypt_and_decrypt.h"
using namespace std;
// 将16进制的string字符串,转成16进制的arr
int hexCharStr2unsignedCharStr(char *src, unsigned long lsrc, int flag, unsigned char * out, unsigned long * lout)
{
if((0 == flag && 0 !=lsrc%2) || (0 != flag && 0 !=lsrc%3) ||NULL == src || NULL == out )
{
return 1;//param err
}
int j = 0;//index of out buff
if(0 == flag)
{ //int i;
for (int i=0; i<lsrc; i += 2)
{
int tmp = 0;
int HIGH_HALF_BYTE = 0;
int LOW_HALF_BYTE = 0;
if (src[i]>= 0x30 && src[i]<=0x39)
{
HIGH_HALF_BYTE = src[i] - 0x30;
}
else if (src[i]>= 0x41 && src[i]<=0x46)
{
HIGH_HALF_BYTE = src[i] - 0x37;
}
else if( src[i]>= 0x61 && src[i]<=0x66)
{
HIGH_HALF_BYTE = src[i] - 0x57;
}
else if( src[i] == 0x20)
{
HIGH_HALF_BYTE = 0x00;
}
else
{
return -1;
}
if (src[i+1]>= 0x30 && src[i+1]<=0x39)
{
LOW_HALF_BYTE = src[i+1] - 0x30;
}
else if (src[i+1]>= 0x41 && src[i+1]<=0x46)
{
LOW_HALF_BYTE = src[i+1] - 0x37;
}
else if( src[i+1]>= 0x61 && src[i+1]<=0x66)
{
LOW_HALF_BYTE = src[i+1] - 0x57;
}
else if( src[i+1] == 0x20)
{
LOW_HALF_BYTE = 0x00;
}
else
{
return -1;
}
tmp = (HIGH_HALF_BYTE<<4) + LOW_HALF_BYTE;
out [j] = tmp;
j++;
}
}
else
{ //int i;
for (int i=0; i<lsrc; i += 3)
{
int tmp = 0;
int HIGH_HALF_BYTE = 0;
int LOW_HALF_BYTE = 0;
if ((i+2<= lsrc) && (src[i+2] != flag))
{
return 1;
}
if (src[i]>= 0x30 && src[i]<=0x39 )
{
HIGH_HALF_BYTE = src[i] - 0x30;
}
else if (src[i]>= 0x41 && src[i]<=0x46)
{
HIGH_HALF_BYTE = src[i] - 0x37;
}
else if( src[i]>= 0x61 && src[i]<=0x66)
{
HIGH_HALF_BYTE = src[i] - 0x57;
}
else
{
return -1;
}
if (src[i+1]>= 0x30 && src[i+1]<=0x39)
{
LOW_HALF_BYTE = src[i+1] - 0x30;
}
else if (src[i+1]>= 0x41 && src[i+1]<=0x46)
{
LOW_HALF_BYTE = src[i+1] - 0x37;
}
else if( src[i+1]>= 0x61 && src[i+1]<=0x66)
{
LOW_HALF_BYTE = src[i+1] - 0x57;
}
else
{
return -1;
}
tmp = (HIGH_HALF_BYTE<<4) + LOW_HALF_BYTE;
out [j] = tmp;
j++;
}
}
* lout = j;
return 0;
}
// 将hexarr 转成16进制的字符串 如 0x11 0x22 转了之后是 “1122”
string array2hex(const unsigned char *arr, size_t len)
{
size_t i;
string res;
char tmp[3];
const char *tab = "0123456789ABCDEF";
res.reserve(len * 2 + 1);
for(i = 0; i < len; ++i) {
tmp[0] = tab[arr[i] >> 4];
tmp[1] = tab[arr[i] & 0xf];
tmp[2] = '\0';
res.append(tmp);
}
return res;
}
int main() {
int error_code;
//生成密钥对
/*SM2_KEY_PAIR key_pair;
if ( error_code = sm2_create_key_pair(&key_pair) )
{
printf("Create SM2 key pair failed!\n");
return (-1);
}
std::string pubKeyStr2=array2hex(key_pair.pri_key,32);
std::string priKeyStr2=array2hex(key_pair.pub_key,65);
std::cout<<"pubKeyStr:"<<pubKeyStr2<<std::endl;
std::cout<<"priKeyStr:"<<priKeyStr2<<std::endl;*/
//公钥是加04的。
std::string pubKeyStr = "04FDFB7C93565AB39E1D8178429632EEC914F6A347AE9A0CE9B201FFAEA81A80CC4D81036191209B21CDBAD8A4BCD5C9A776FEDB771D6D2D8DAC0F1E5941C0F63C";
std::string priKeyStr = "832B9C649C63B376DBD1D858C4D1B804CCFF6F7B6B588A9F30A54AF821F80E86";
std::string msg = "lxw 123abcD 2024-09-01:12:00";
std::cout<<"加密字符串:"<<msg<<std::endl<<std::endl;
int msg_len = msg.length();
//私钥
unsigned char pri_key[32] = {0};
unsigned long pri_key_len = 32;
//公钥
unsigned char pub_key[65] = {0};
unsigned long pub_key_len = 65;
unsigned char c1[65], c3[32];
unsigned long c1Len = 65;
unsigned long c3Len = 32;
unsigned char *c2, *plaintext;
int b = hexCharStr2unsignedCharStr((char*)priKeyStr.c_str(), priKeyStr.length(), 0, pri_key, &pri_key_len);
if(b != 0)
{
printf("转换priKeyStr失败\n");
}
b = hexCharStr2unsignedCharStr((char*)pubKeyStr.c_str(), pubKeyStr.length(), 0, pub_key, &pub_key_len);
if(b != 0)
{
printf("转换pubKeyStr失败\n");
}
if ( !(c2 = (unsigned char *)malloc(msg_len)) )
{
printf("Memory allocation failed!\n");
return ALLOCATION_MEMORY_FAIL;
}
//加密
if ( error_code = sm2_encrypt((unsigned char *)msg.c_str(),
msg_len,
pub_key,
c1,
c3,
c2) )
{
printf("Create SM2 ciphertext by using input defined in standard failed!\n");
free(c2);
return error_code;
}
std::string c1str=array2hex(c1,c1Len);
std::string c2str=array2hex(c2,msg_len);
std::string c3str=array2hex(c3,c3Len);
std::string result=c1str+c2str+c3str;
std::cout<<"加密后信息:"<<result<<std::endl<<std::endl;
//解密
if ( !(plaintext = (unsigned char *)malloc(c2str.length())) )
{
printf("Memory allocation failed!\n");
return ALLOCATION_MEMORY_FAIL;
}
if ( error_code = sm2_decrypt(c1,
c3,
c2,
msg_len,
pri_key,
plaintext) )
{
printf("Decrypt SM2 ciphertext by using private key defined in standard failed!\n");
}
std::string plainTextStr((char*)plaintext);
plainTextStr = plainTextStr.substr(0, msg_len);
std::cout<<"解密后信息:"<<plainTextStr<<std::endl;
free(plaintext);
free(c2);
getchar();
return 0;
}
#include "StdAfx.h"
#include <iostream>
#include <string>
#include <cstring>
#include <memory>
#include <openssl/bio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include "sm2_cipher_error_codes.h"
#include "sm2_create_key_pair.h"
#include "sm2_encrypt_and_decrypt.h"using namespace std;// 将16进制的string字符串,转成16进制的arr
int hexCharStr2unsignedCharStr(char *src, unsigned long lsrc, int flag, unsigned char * out, unsigned long * lout)
{if((0 == flag && 0 !=lsrc%2) || (0 != flag && 0 !=lsrc%3) ||NULL == src || NULL == out ){return 1;//param err}int j = 0;//index of out buffif(0 == flag){ //int i;for (int i=0; i<lsrc; i += 2){int tmp = 0;int HIGH_HALF_BYTE = 0;int LOW_HALF_BYTE = 0;if (src[i]>= 0x30 && src[i]<=0x39){HIGH_HALF_BYTE = src[i] - 0x30;}else if (src[i]>= 0x41 && src[i]<=0x46){HIGH_HALF_BYTE = src[i] - 0x37;}else if( src[i]>= 0x61 && src[i]<=0x66){HIGH_HALF_BYTE = src[i] - 0x57;}else if( src[i] == 0x20){HIGH_HALF_BYTE = 0x00;}else{return -1;}if (src[i+1]>= 0x30 && src[i+1]<=0x39){LOW_HALF_BYTE = src[i+1] - 0x30;}else if (src[i+1]>= 0x41 && src[i+1]<=0x46){LOW_HALF_BYTE = src[i+1] - 0x37;}else if( src[i+1]>= 0x61 && src[i+1]<=0x66){LOW_HALF_BYTE = src[i+1] - 0x57;}else if( src[i+1] == 0x20){LOW_HALF_BYTE = 0x00;}else{return -1;}tmp = (HIGH_HALF_BYTE<<4) + LOW_HALF_BYTE;out [j] = tmp;j++;}}else{ //int i;for (int i=0; i<lsrc; i += 3){int tmp = 0;int HIGH_HALF_BYTE = 0;int LOW_HALF_BYTE = 0;if ((i+2<= lsrc) && (src[i+2] != flag)){return 1;}if (src[i]>= 0x30 && src[i]<=0x39 ){HIGH_HALF_BYTE = src[i] - 0x30;}else if (src[i]>= 0x41 && src[i]<=0x46){HIGH_HALF_BYTE = src[i] - 0x37;}else if( src[i]>= 0x61 && src[i]<=0x66){HIGH_HALF_BYTE = src[i] - 0x57;}else{return -1;}if (src[i+1]>= 0x30 && src[i+1]<=0x39){LOW_HALF_BYTE = src[i+1] - 0x30;}else if (src[i+1]>= 0x41 && src[i+1]<=0x46){LOW_HALF_BYTE = src[i+1] - 0x37;}else if( src[i+1]>= 0x61 && src[i+1]<=0x66){LOW_HALF_BYTE = src[i+1] - 0x57;}else{return -1;}tmp = (HIGH_HALF_BYTE<<4) + LOW_HALF_BYTE;out [j] = tmp;j++;}}* lout = j;return 0;}// 将hexarr 转成16进制的字符串 如 0x11 0x22 转了之后是 “1122”
string array2hex(const unsigned char *arr, size_t len)
{size_t i;string res;char tmp[3];const char *tab = "0123456789ABCDEF";res.reserve(len * 2 + 1);for(i = 0; i < len; ++i) {tmp[0] = tab[arr[i] >> 4];tmp[1] = tab[arr[i] & 0xf];tmp[2] = '\0';res.append(tmp);}return res;
}int main() {int error_code;//生成密钥对/*SM2_KEY_PAIR key_pair;if ( error_code = sm2_create_key_pair(&key_pair) ){printf("Create SM2 key pair failed!\n");return (-1);}std::string pubKeyStr2=array2hex(key_pair.pri_key,32);std::string priKeyStr2=array2hex(key_pair.pub_key,65);std::cout<<"pubKeyStr:"<<pubKeyStr2<<std::endl;std::cout<<"priKeyStr:"<<priKeyStr2<<std::endl;*///公钥是加04的。std::string pubKeyStr = "04FDFB7C93565AB39E1D8178429632EEC914F6A347AE9A0CE9B201FFAEA81A80CC4D81036191209B21CDBAD8A4BCD5C9A776FEDB771D6D2D8DAC0F1E5941C0F63C";std::string priKeyStr = "832B9C649C63B376DBD1D858C4D1B804CCFF6F7B6B588A9F30A54AF821F80E86";std::string msg = "lxw 123abcD 2024-09-01:12:00";std::cout<<"加密字符串:"<<msg<<std::endl<<std::endl;int msg_len = msg.length();//私钥unsigned char pri_key[32] = {0};unsigned long pri_key_len = 32;//公钥unsigned char pub_key[65] = {0}; unsigned long pub_key_len = 65;unsigned char c1[65], c3[32];unsigned long c1Len = 65;unsigned long c3Len = 32;unsigned char *c2, *plaintext;int b = hexCharStr2unsignedCharStr((char*)priKeyStr.c_str(), priKeyStr.length(), 0, pri_key, &pri_key_len);if(b != 0){printf("转换priKeyStr失败\n");}b = hexCharStr2unsignedCharStr((char*)pubKeyStr.c_str(), pubKeyStr.length(), 0, pub_key, &pub_key_len);if(b != 0){printf("转换pubKeyStr失败\n");}if ( !(c2 = (unsigned char *)malloc(msg_len)) ){printf("Memory allocation failed!\n");return ALLOCATION_MEMORY_FAIL;}//加密if ( error_code = sm2_encrypt((unsigned char *)msg.c_str(),msg_len,pub_key,c1,c3,c2) ){printf("Create SM2 ciphertext by using input defined in standard failed!\n");free(c2);return error_code;}std::string c1str=array2hex(c1,c1Len);std::string c2str=array2hex(c2,msg_len);std::string c3str=array2hex(c3,c3Len);std::string result=c1str+c2str+c3str;std::cout<<"加密后信息:"<<result<<std::endl<<std::endl;//解密if ( !(plaintext = (unsigned char *)malloc(c2str.length())) ){printf("Memory allocation failed!\n");return ALLOCATION_MEMORY_FAIL;}if ( error_code = sm2_decrypt(c1,c3,c2,msg_len,pri_key,plaintext) ){printf("Decrypt SM2 ciphertext by using private key defined in standard failed!\n");}std::string plainTextStr((char*)plaintext);plainTextStr = plainTextStr.substr(0, msg_len);std::cout<<"解密后信息:"<<plainTextStr<<std::endl;free(plaintext);free(c2);getchar();return 0;
}
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