int main()
{
Prime p;
RSA s;
int m = 3200;
//initPrime(&p);
//findPrime(&p,10000000);
//printPrime(&p);
GenerateRSA(&s,9999937,9999943,17);
PrintRSA(&s);
for (m=1;m<s.n;m++)
{
m = encryptRSA(&s,m);
m = decryptRSA(&s,m);
}
}
/* \brief receives a session key from the client
* Protocol: Client generates an AES key which is sent
* encrypted by RSA. Use the private key to decrypt the
* AES key and use the AES key for the rest of the session
*/
unsigned char *getSessionKey(int client_sock){
unsigned char client_message[MAX_MSG_SZ];
int read_size;
// get encrypted AES key from client
if ( (read_size = recv(client_sock, client_message, MAX_MSG_SZ, 0)) < 0){
perror("receive failed");
exit(1);
}
// decrypt AES key using server private key
RSA * privateKey;
privateKey = readPrivateKey(server_key);
if (privateKey == NULL){
//key file not found
exit(1); //fatal
}
unsigned char *session_key;
session_key = (unsigned char *) malloc(KEYLEN*sizeof(char));
int keylen =
decryptRSA(
client_message,
read_size,
session_key,
privateKey
);
printf("Session key:\n");
int i;
for (i = 0; i < keylen; i++){
printf("0x%02x ", session_key[i]);
if (i%8==7) printf("\n");
}
memset(client_message, 0, MAX_MSG_SZ); //zero out buffer
return session_key;
}
