Write a built up certificate to a X509 DER structure Note: data is written at the end of the buffer! Use the return value to determine where you should start using the buffer
Set the validity period for a Certificate Timestamps should be in string format for UTC timezone i.e. "YYYYMMDDhhmmss" e.g. "20131231235959" for December 31st 2013 at 23:59:59
Set the subject name for a Certificate Subject names should contain a comma-separated list of OID types and values: e.g. "C=UK,O=ARM,CN=Mbed TLS Server 1"