X509_alias_set1
X509_alias_set1(ucert, NULL, 0);
X509_alias_set1(sk_X509_value(certs, i), catmp, -1);
if (!X509_alias_set1(x, (unsigned char *)x509_config.alias, -1))
r = X509_alias_set1(x509, data, len);
int X509_alias_set1(X509 *x, const unsigned char *name, int len);