Hello,
> I am a novice OpenSSL library user. Currently I am implementing code
> to generate a RSA key pair. Here
> is a part of my code:
>
> _time_get(&tim);
> RAND_add(&tim,sizeof(tim),0);
You should get seed from some PRNG source, but on Linux/Unix if this is
not enough OpenSSL library will seed yourself
reading /dev/urandom,EGD, ...
If there will be not enough seed data (32 bytes) RSA_generate_key() will
return error (there is check for seeded PRNG).
> pMiSslCtx = MiSslInitEx( TLSv1_method(), true );
>
> rsa=RSA_generate_key(key_len,RSA_F4,NULLcb,NULL);
>
>
> my key_len is 2048.
>
> The code crashes in RSA_generate_key() function call, more
> particularly in probable_prime(). I am not sure what
> I am doign wrong here. Any help would be highly apprecaited.
Some simple example attached.
Best regards,
--
Marek Marcola <[EMAIL PROTECTED]>
#include <stdio.h>
#include <openssl/bn.h>
#include <openssl/rsa.h>
int main()
{
RSA *r;
r = RSA_generate_key(2048,RSA_F4,NULL,NULL);
if( r==NULL ) {
printf("Key failed");
exit(1);
} else {
printf("public modulus (n):\n");
printf(" %s\n",BN_bn2hex(r->n));
printf("public exponent (e):\n");
printf(" %s\n",BN_bn2hex(r->e));
printf("private exponent (d):\n");
printf(" %s\n",BN_bn2hex(r->d));
printf("secret prime factor (p):\n");
printf(" %s\n",BN_bn2hex(r->p));
printf("secret prime factor (q):\n");
printf(" %s\n",BN_bn2hex(r->q));
printf("dmp1 [ d mod (p-1) ]:\n");
printf(" %s\n",BN_bn2hex(r->dmp1));
printf("dmq1 [ d mod (q-1) ]:\n");
printf(" %s\n",BN_bn2hex(r->dmq1));
printf("iqmp [ q^-1 mod p ]:\n");
printf(" %s\n",BN_bn2hex(r->iqmp));
}
printf("RSA SIZE: %d\n", RSA_size(r));
return(0);
}
