krb5_crypto_us_timeofday
krb5_error_code krb5_crypto_us_timeofday(krb5_timestamp *, krb5_int32 *);
retval = krb5_crypto_us_timeofday(&sec, &usec);
retval = krb5_crypto_us_timeofday(&sec, &usec);
return krb5_crypto_us_timeofday(seconds, microseconds);