How to implement basic primitives? about libscapi

[liorko87]

Hello,

libscapi is a library. In order to compile libscapi, please run at the root dir of libscapi the command make.
Afterwards a library that called libscapi will be created. Link to this folder and implement the primitive you need.

Lior

[Zeinab-Rahmani]

Thank you so much for the explanation. I linked the libscapi.a to my project.
After that, in order to run the cryptographic hash, I wrote the following codes in qt creator:

I appreciate it if you could give me some hints on how to fix the errors and run this hash primitive.
Thank you for your help :).

Meanwhile, I have to mention that I created the input array 'in' and output array 'out' in the following form which I know might not be correct.

char in [2]={'a','b'};
int out[2];

[liorko87]

Please follow the functions signatures.

[Zeinab-Rahmani]

I try to follow but I recieve this error:
‘const class std::vector’ has no member named ‘length’

which is related to the following codes:
hash->update(in, 0, in.length);

And these are my new codes:

#include </home/zeinab/libscapi/include/primitives/HashOpenSSL.hpp>
#include
#include
using namespace std;

int main(int argc, char* argv[]){
//create an input array in and an output array out
const vector in {'h', 'i'} ;
vector out;

//create an OpenSSL sha224 function.
CryptographicHash* hash = new OpenSSLSHA224();

//call the update function in the Hash interface.
hash->update(in, 0, in.length);

//get the result of hashing the updated input.
hash->hashFinal(out, 0);
return 0;
}

[Zeinab-Rahmani]

Hello,
I think I found the problem, the code hash->update(in, 0, in.length); should be converted to hash->update(in, 0, in.size()); .

In the following there are my codes with no error:

#include "primitives/HashOpenSSL.hpp"
#include
using namespace std;

int main(int argc, char *argv[])
{
//create an input array in and an output array out
const vector in {'h', 'e', 'l', 'l', 'o'};
vector out;

//create  an OpenSSL sha224 function.
CryptographicHash* hash = new OpenSSLSHA224();

//call the update function in the Hash interface.
//void update(const vector<byte> &in, int inOffset, int inLen) override;
hash->update(in, 0, in.size());

//get the result of hashing the updated input.
hash->hashFinal(out, 0);
for(size_t i = 0; i < out.size(); i++){
std::cerr<<out[i]<<""; }
return 0;

}