sk=X509_STORE_get1_certs(callback_ctx, X509_get_subject_name(cert));if(sk) {for(i=0; i<sk_X509_num(sk); i++)if(compare_pubkeys(cert,sk_X509_value(sk, i))) { sk_X509_pop_free(sk, X509_free);return1;/* accept */} sk_X509_pop_free(sk, X509_free); }#endif/* pre-1...