Hongkong Post e-Cert
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Hongkong Post

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Hongkong Post e-Cert (Encipherment)

Hongkong Post e-Cert (Encipherment) certificate is issued to Bureaux and Departments of the Government of Hong Kong SAR, organisations that hold a valid business registration certificate issued by the Government of Hong Kong SAR and statutory bodies of Hong Kong SAR whose existence is recognized by the laws of Hong Kong SAR (a "Subscriber Organisation"). Such a certificate is designed to be used by such units of the Subscriber Organisation ("the Authorised Units") which has been authorised to use that e-Cert (Encipherment) certificate for the following purposes ONLY:-

  • to send encrypted electronic messages to the Subscriber Organisation;
  • to permit the Subscriber Organisation to decrypt messages; and
  • to permit the Subscriber Organisation to acknowledge receipt of the encrypted message by sending an acknowledgment with a digital signature added to it to confirm the identity of the receiving Subscriber Organisation.

SUBSCRIBING ORGANISATIONS UNDERTAKE TO HONGKONG POST NOT TO GIVE AUTHORITY TO THE AUTHORISED USERS TO USE A DIGITAL SIGNATURE OF THIS CLASS OF CERTIFICATE FOR ANY OTHER PURPOSE AND ACCORDINGLY ANY DIGITAL SIGNATURE GENERATED BY THE PRIVATE KEY OF THIS CLASS OF CERTIFICATE USED OTHER THAN TO ACKNOWLEDGE RECEIPT OF A MESSAGE AS SET OUT ABOVE MUST BE TREATED AS A SIGNATURE GENERATED AND USED WITHOUT THE AUTHORITY OF THE SUBSCRIBER ORGANISATION WHOSE SIGNATURE IT IS AND MUST BE TREATED FOR ALL PURPOSES AS AN UNAUTHORISED SIGNATURE.

Further, digital signatures generated by this class of certificate are only to be used to acknowledge the receipt of electronic messages in transactions which are not related to or connected with the payment of money on-line or the making of any investment on-line or the conferring on-line of any financial benefit on any person or persons or entities of whatsoever nature and under no circumstances are digital signatures generated by these certificates to be used to acknowledge the receipt of messages sent in connection with the negotiation or conclusion of a contract or any legally binding agreement.
An e-Cert (Encipherment) certificate contains the following information of the Subscriber Organisation :

  • Name of Authorised Unit;
  • Subscriber Organisation's name;
  • Branch name or department name of the Subscriber Organisation;
  • Subscriber Organisation's company/business registration number;
  • E-mail address; and
  • A unique Subscriber Reference Number.
Hongkong Post e-Cert (Encipherment) certificate may be issued with a validity period of 1 year, 2 years, 3 years or 4 years at the cost as follows:
  Certificates with a 1-year validity period only Certificates with a 2-year validity period only Certificates with a 3-year validity period only Certificates with a 4-year validity period only
New application or Renewal application **HK$150 per certificate
Promotional Offer:
HK$21 per certificate
**HK$300 per certificate
Promotional Offer:
HK$42 per certificate
**HK$450 per certificate
Promotional Offer:
HK$63 per certificate
**HK$600 per certificate
Promotional Offer:
HK$84 per certificate
Storage Media: e-Cert file USB
HK$40 per each
Administration fee per application (irrespective of the number of Authorised Units) HK$150 per application HK$300 per application HK$450 per application HK$600 per application

HK$150 if the application form contains applications for e-Certs of 1-year validity only.

HK$300 if the application form contains applications for e-Certs with longest validity period equal to 2-year validity.

HK$450 if the application form contains applications for e-Certs with longest validity period equal to 3-year validity.

HK$600 if the application form contains applications for e-Certs with longest validity period equal to 4-year validity.

** With effect from 1 April 2012, the annual subscription fee for e-Cert (Encipherment) is discounted from HK$150 to HK$21 per certificate until further notice. For details, please refer to the relevant announcement.

Please note:

  • Hongkong Post Certification Authority has ceased to use of e-Cert File Card as e-Cert Storage Medium with effect from 1 February 2019. For details, please refer to the relevant announcement.
  • Hongkong Post Certification Authority has ceased to use floppy diskette as e-Cert Storage Medium with effect from 1 April 2013. For details, please refer to the relevant announcement.
  • Starting from 1 January 2014, e-Cert (Encipherment) is issued only with 2048-bit RSA key length. For details, please refer to the relevant announcement.

Reliance Limit of Hongkong Post e-Cert (Encipherment)

The "Reliance Limit" as defined under the Electronic Transactions Ordinance in respect of one e-Cert (Encipherment) certificate is HK$200,000.

Certification Practice Statement

To know more about our practices in issuing the e-Cert (Encipherment), click here to view the e-Cert Certification Practice Statement (CPS).

Click here to download the application form.

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Usage of e-Cert
e-Cert User Guide
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