- if (!print(bp,s,x->e,m,off)) goto err;
- if (!print(bp,"privateExponent:",x->d,m,off)) goto err;
- if (!print(bp,"prime1:",x->p,m,off)) goto err;
- if (!print(bp,"prime2:",x->q,m,off)) goto err;
- if (!print(bp,"exponent1:",x->dmp1,m,off)) goto err;
- if (!print(bp,"exponent2:",x->dmq1,m,off)) goto err;
- if (!print(bp,"coefficient:",x->iqmp,m,off)) goto err;
+ if ((x->e != NULL) && !print(bp,s,x->e,m,off))
+ goto err;
+ if ((x->d != NULL) && !print(bp,"privateExponent:",x->d,m,off))
+ goto err;
+ if ((x->p != NULL) && !print(bp,"prime1:",x->p,m,off))
+ goto err;
+ if ((x->q != NULL) && !print(bp,"prime2:",x->q,m,off))
+ goto err;
+ if ((x->dmp1 != NULL) && !print(bp,"exponent1:",x->dmp1,m,off))
+ goto err;
+ if ((x->dmq1 != NULL) && !print(bp,"exponent2:",x->dmq1,m,off))
+ goto err;
+ if ((x->iqmp != NULL) && !print(bp,"coefficient:",x->iqmp,m,off))
+ goto err;