X509_check_email
LCRYPTO_USED(X509_check_email);
LCRYPTO_ALIAS(X509_check_email);
if (vpm->email != NULL && X509_check_email(x, vpm->email, vpm->emaillen, 0)
int X509_check_email(X509 *x, const char *chk, size_t chklen,