Hongkong Post e-Cert

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Hongkong Post CA Root Certificate

Each of the e-Certs issued by Hongkong Post bears a digital signature supported by a Hongkong Post CA root certificate that proves the authenticity of the e-Cert. The common browser software installed on your computer supports storage and use of such root certificates. To allow your browser to recognize the e-Certs issued by Hongkong Post, the following Hongkong Post CA root certificates should be installed in your browser on your computer:-

Hongkong Post Root CA 1

This Root CA is valid for 20 years (15 May 2003 – 15 May 2023) and is required for verifying the Hongkong Post digital signature on the Sub CANote 1 "Hongkong Post e-Cert CA 1 - 10", "Hongkong Post e-Cert CA 1 - 14", "Hongkong Post e-Cert CA 1 - 15" and the expired Sub CA "Hongkong Post e-Cert CA 1".

Hongkong Post e-Cert CA 1 - 10

This Sub CANote 1 is valid from 9 January 2010 to 15 May 2023 and is required for verifying the Hongkong Post digital signature on e-Cert (Personal), e-Cert (Organisational), e-Cert (Encipherment) and e-Cert (Server) issued on or after 26 February 2010.

The words "Hongkong Post e-Cert CA 1 - 10" will be displayed in the "Issuer" field of the above e-Certs.

Hongkong Post e-Cert CA 1 - 14

This Sub CANote 1 is valid from 30 Nov 2014 to 15 May 2023 and is required verifying the Hongkong Post digital signature on SHA-256 e-Cert (Server) issued on or after 1 January 2015.

The words "Hongkong Post e-Cert CA 1 - 14" will be displayed in the "Issuer" field of the above e-Certs.

Hongkong Post e-Cert CA 1 - 15

This Sub CANote 1 is valid from 4 Jul 2015 to 15 May 2023 and is required for verifying the Hongkong Post digital signature on e-Cert (Server) supporting OCSP issued on or after 1 September 2015.

The words "Hongkong Post e-Cert CA 1 - 15" will be displayed in the "Issuer" field of the above e-Certs.

Hongkong Post Root CA 3 (Cross certificate)

This cross certificate "Hongkong Post Root CA 3" is valid from 12 August 2017 to 15 May 2023 signed by Root CA1.

Hongkong Post Root CA 2

This Root CA is valid for 25 years (5 September 2015 – 5 September 2040) and is required for verifying the Hongkong Post digital signature on the Sub CANote 1 "Hongkong Post e-Cert CA 2 - 15" , "Hongkong Post e-Cert CA 2 - 17" and "Hongkong Post e-Cert CA 2 - 19".

Hongkong Post e-Cert CA 2 - 15

This Sub CANote 1 is valid from 5 September 2015 to 5 September 2030 and is required for verifying the Hongkong Post digital signature on Bank-Cert (Personal), Bank-Cert (Corporate) and Bank-Cert (Bank) issued on or after 7 December 2015.

The words "Hongkong Post e-Cert CA 2 - 15" will be displayed in the "Issuer" field of the above Bank-Certs.

Hongkong Post e-Cert CA 2 - 17

This Sub CANote 1 is valid from 12 August 2017 to 12 August 2032 and is required for verifying the Hongkong Post digital signature on e-Cert (Personal), e-Cert (Organisational) and e-Cert (Encipherment) issued on or after 1 February 2019.

The words "Hongkong Post e-Cert CA 2 - 17" will be displayed in the "Issuer" field of the above e-Certs.

Hongkong Post e-Cert CA 2 - 19

This Sub CANote 1 is valid from 29 July 2019 to 29 July 2034 and is required for verifying the Hongkong Post digital signature on iAM Smart-Cert issued on or after 7 October 2020.

The words "Hongkong Post e-Cert CA 2 - 19" will be displayed in the "Issuer" field of the above iAM Smart-Certs.

Hongkong Post Root CA 3

This Root CA is valid for 25 years (3 June 2017 – 3 June 2042) and is required for verifying the Hongkong Post digital signature on the Sub CANote 1 "Hongkong Post e-Cert SSL CA 3 - 17".

Hongkong Post e-Cert SSL CA 3 - 17

This Sub CANote 1 is valid from 3 June 2017 to 3 June 2032 and is required for verifying the Hongkong Post digital signature on e-Cert (Server) supporting OCSP issued on or after 1 July 2019.

The words "Hongkong Post e-Cert SSL CA 3 - 17" will be displayed in the "Issuer" field of the above Bank-Certs.

Expired Hongkong Post e-Cert CA 1

This Sub CANote 1 expired on 15 May 2013. It has been used to issue e-Cert and Bank-Cert in the following periods:-

  1. e-Cert (Personal) issued between 23 June 2003 and 25 February 2010
  2. e-Cert (Organisational), e-Cert (Encipherment), e-Cert (Server), Bank-Cert (Personal) and Bank-Cert (Corporate) issued between 12 January 2004 and 25 February 2010.

The words "Hongkong Post e-Cert CA 1" will be displayed in the "Issuer" field of the above e-Certs and Bank-Certs.

Retired Hongkong Post CA Root Certificates

The CA root certificates "Hongkong Post Root CA" and "Hongkong Post e-Cert CA" have been retired and revoked on 31 March 2005.

Download retired CA certificates

Note 1: Sub CA refers to the subordinate certification authority certificate which is issued by the respective Root CA "Hongkong Post Root CA 1" , "Hongkong Post Root CA 2" or "Hongkong Post Root CA 3" and is used to sign the Hongkong Post Recognized Certificates.

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