Public Key Infrastructure
Public Key Infrastructure Technology
Certification Authorities and Digital Certificates
The effective operation of PKI very much depends
on the support of a CA.
The main role of a CA is to act as a trusted third
party to verify the identity of digital
certificate subscribers.
The Hongkong Post is the first publically recognised
CA under the Electronic
Transactions Ordinance ("ETO") (Cap.
553). Any organisation and member of the public
can buy digital certificates in Hong Kong from
Hongkong Post, and they issue different types
of digital certificate such as e-Certs, Bank-Certs
and Mobile e-Certs. There are also a number of
other recognised CAs under the Electronic Transactions
Ordinance.
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