DO IN C coding language: Generate and verify the validity of $$signed $"487"$ certs $($basically$,$ A "Version $1"$ X$\mathrm{.}509$ cert with an additional $8-$bit field to indicate "trust level" $($TL$),$ where TL is an integer between $0$ and $7($inclusive$)$ with $"7"$ being the highest trust level. $$ See Figure $14\mathrm{.}15$ in Stallings for the other required fields. The best way to do this is to prompt the user for the values of each field prior to hashing and signing.$$ All parts of your cert, save the signed hash, should be "human readable" so that I can verify and$/$or change the contents with a text editor.$$ Your notion of "time" can just be an integer $($there is no need for a date format$),$ but you must be able to establish a "pki system$-$time" when validating and to change the "time" to allow certs to expire or become valid.