(1) Constructing a PKI system mainly includes () () () () () () () () () () () () () () () (3) four basic security services for information security () () () () () () ) (4) Certificate revocation is a very important part of the PKI, then the four possible reasons for certificates are () () () () (5) for an abstract description of ASN.1, another series of standards The rules, translated these expressions into a binary sequence of 0.1, wherein the most used in PKI is (), he is another subset of another important rule (). (6) X, 50G framework includes three types of entities () () () (7) With the continuous in-depth of PKI technology, PKI technology itself is constantly changing, this year, more important changes have the following two Aspect () () (8) The three high-strength certification processes of the CA trust chain are () () () (9) SSL security protocols include () two layers.
