int dldp_pgonMakeSafe(dldp_p* dp, randomGeneratorContext* rgc, size_t pbits)
{
/*
* Generate parameters with a safe prime; i.e. p = 2q+1, where q is prime
*/
register size_t psize = MP_BITS_TO_WORDS(pbits + MP_WBITS - 1);
register mpw* temp = (mpw*) malloc((8*psize+2) * sizeof(mpw));
if (temp)
{
/* generate safe p */
mpprndsafe_w(&dp->p, rgc, pbits, mpptrials(pbits), temp);
/* set n */
mpbsubone(&dp->p, temp);
mpbset(&dp->n, psize, temp);
/* set q */
mpcopy(psize, temp, dp->p.modl);
mpdivtwo(psize, temp);
mpbset(&dp->q, psize, temp);
/* set r = 2 */
mpnsetw(&dp->r, 2);
dldp_pgonGenerator_w(dp, rgc, temp);
free(temp);
return 0;
}
return -1;
}
int dldp_pgoqMakeSafe(dldp_p* dp, randomGeneratorContext* rgc, size_t bits)
{
/*
* Generate parameters with a safe prime; p = 2q+1 i.e. r=2
*
*/
register size_t size = MP_BITS_TO_WORDS(bits + MP_WBITS - 1);
register mpw* temp = (mpw*) malloc((8*size+2) * sizeof(mpw));
if (temp)
{
/* generate p */
mpprndsafe_w(&dp->p, rgc, bits, mpptrials(bits), temp);
/* set q */
mpcopy(size, temp, dp->p.modl);
mpdivtwo(size, temp);
mpbset(&dp->q, size, temp);
/* set r = 2 */
mpnsetw(&dp->r, 2);
/* clear n */
mpbzero(&dp->n);
dldp_pgoqGenerator_w(dp, rgc, temp);
free(temp);
return 0;
}
return -1;
}
int main(int argc, char * argv[])
{
rsakp keypair;
mpnumber m, cipher, decipher;
randomGeneratorContext randg;
int e =0, keylen = 1024, flag = 0;
char buf[8192] = {0};
if ( randomGeneratorContextInit(&randg, randomGeneratorDefault()) != 0 )
{
return flag;
}
if ( argc > 1 ) {
keylen = atoi(argv[1]);
}
rsakpInit(&keypair);
if ( argc > 2 ) {
/* e 为奇数 */
e = ((atoi(argv[2]) >> 1) << 1) + 1;
mpnsetw(&keypair.e, e);
}