@deftypefun {unsigned} {gnutls_x509_crt_check_email} (gnutls_x509_crt_t @var{cert}, const char * @var{email}, unsigned int @var{flags}) @var{cert}: should contain an gnutls_x509_crt_t type @var{email}: A null terminated string that contains an email address (RFC822) @var{flags}: should be zero This function will check if the given certificate's subject matches the given email address. @strong{Returns:} non-zero for a successful match, and zero on failure. @end deftypefun