#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
#include <string.h>
#include <iostream>
#include <stdlib.h>
#include <sstream>
using namespace std;
int main()
{
std::stringstream ss;
std::string data;
data = "hello worl";
unsigned char digest[SHA_DIGEST_LENGTH];
char *string1 = strdup(data.c_str());
// do stuff with string1
free(string1);
SHA1((unsigned char*)&string1, strlen(string1), (unsigned char*)&digest);
char mdString[SHA_DIGEST_LENGTH*2+1];
for(int i = 0; i < SHA_DIGEST_LENGTH; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
ss.str("");
ss << mdString;
cout << ss.str() << std::endl;
return 0;
}
My output always the same..
./sha
da39a3ee5e6b4b0d3255bfef95601890afd80709
Even i change the content of data to "hello panda" or "hello ki" also give me the same output.
Update:
I took away the free
user1@ubuntu:~/yes/coding$ g++ -o sha sha.cpp -lcrypto
user1@ubuntu:~/yes/coding$ ./sha
1bc8b06c5cd4e774195293ea00c959173d8d3789
user1@ubuntu:~/yes/coding$ ./sha
c8cf70c522fc564aedb5894a24613542702172ca
user1@ubuntu:~/yes/coding$ ./sha
83fbda098c3549ab1347d6cf708ac85092200423
user1@ubuntu:~/yes/coding$ ./sha
ea6ccffd78236e22da412ed90a852329f59f8fd5
user1@ubuntu:~/yes/coding$ ./sha
0413799befebcb23f5a5c970e48febc7f1aa27fb
user1@ubuntu:~/yes/coding$ ./sha
7bd8e7952c78e282b8c117f8c537c456b66207d9
The sha change everytime, even i did not change the content of data
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