1. Internet x.509 Public Key Infrastructure Certificate Management Protocol (cmp);Adams,2005
2. Concise Binary Object Representation (cbor);Bormann,2013
3. Internet x.509 public key infrastructure certificate and certificate revocation list (crl) profile;Cooper,2008
4. The Transport Layer Security (tls) Protocol version 1.2;Dierks,2008
5. PKI: The security solution for the internet of things;DigiCert;Tech rep, DigiCert Inc,2017