Computer Science A $\_\_\_\_\_\_\_\_\_\_\_$ is nothing more than someone you $($or your computer$)$ trusts. The idea is that a group of parties who don$$t know each other can each trust a public entity such as the CA$.$ Even though the parties don$$t know each other, they can trust one another as long as the CA can vouch for them.

Group of answer choices

X$\mathrm{.}509$

trusted third$-$party

registration authorities $($RAs$)$

Digital signatures