ASN1_d2i_bio
ret = ASN1_d2i_bio(xnew, d2i, b, x);
void *ASN1_d2i_bio(void *(*xnew)(void), d2i_of_void *d2i, BIO *in, void **x);
((type *)ASN1_d2i_bio(CHECKED_NEW_OF(type, xnew), \