- int toret;
- char *tmpchar = OPENSSL_malloc(mpz_sizeinbase(g, 16) + 10);
- if(!tmpchar) return 0;
- mpz_get_str(tmpchar, 16, g);
- toret = BN_hex2bn(&bn, tmpchar);
- OPENSSL_free(tmpchar);
- return toret;
+ if(((sizeof(bn->d[0]) * 8) == GMP_NUMB_BITS) &&
+ (BN_BITS2 == GMP_NUMB_BITS))
+ {
+ /* The common case */
+ int s = (g->_mp_size >= 0) ? g->_mp_size : -g->_mp_size;
+ BN_zero(bn);
+ if(bn_expand2 (bn, s) == NULL)
+ return 0;
+ bn->top = s;
+ memcpy(&bn->d[0], &g->_mp_d[0], s * sizeof(bn->d[0]));
+ bn_correct_top(bn);
+ bn->neg = g->_mp_size >= 0 ? 0 : 1;
+ return 1;
+ }
+ else
+ {
+ int toret;
+ char *tmpchar = OPENSSL_malloc(mpz_sizeinbase(g, 16) + 10);
+ if(!tmpchar) return 0;
+ mpz_get_str(tmpchar, 16, g);
+ toret = BN_hex2bn(&bn, tmpchar);
+ OPENSSL_free(tmpchar);
+ return toret;
+ }