1. X. 509 internet public key infrastructure online certificate status protocol-OCSP;Myers,1999
2. Internet x. 509 public key infrastructure certificate and certificate revocation list (CRL) profile;Cooper;RFC,2008
3. Self-certified public keys;Girault,1991
4. An identity-based key-exchange protocol;Günther,1990
5. Provably secure implicit certificate schemes;Brown,2001