Loading Singpass Root Signing Certificate

In order to verify if a Sign with Singpass signature is valid, see here.

Before that, the Singpass root signing certificate must be installed on your device and configured for your Adobe Acrobat Reader:

  • You can download the Adobe Acrobat Reader application here

  • If you do not have the Singpass root signing certificate on your device, please follow the steps below.

Automatically load the certificate

1

Go to GovTech CA Repository and download "Singapore National Root CA - B1 FDF"

2

Open the file downloaded.

This should automatically load the certificate into your Adobe Acrobat reader.

3

All done!

Open up a document generated by Sign and you should be able to see the the green tick and the words "Signed and all signatures are valid".

Manually load the certificate

1

Go to GovTech CA Repository and download Singapore National Root CA - B1 Certificate.

2

Certificates Staging Environment

For staging environment, download the certificate below.

CER Format

Singapore National Root CA - B1 CER format

CRT Format

Singapore National Root CA - B1 CRT format
3

In your folder that you have chosen, you should find the file RCA-B1.crt

4

Open Adobe PDF reader.

If you do not have this, you may download and install here.

5

Click "Acrobat Reader" on the top left.

6

Navigate to "Preferences"

7

Under Categories, find and click "Signatures".

8

Click "more" under Identities and Trusted Certificates.

9

Click on "Trusted Certificates"

10

Click Import

11

Under Contacts, click "Browse" and choose the certificate you have downloaded earlier. Click on "Singapore National Root CA - B1" that is loaded.

12

Under Certificates, click on Singapore National Root CA - B1 and then click Trust

13

Check "Use this certificate as a trusted root" with a tick and press OK

14

Click on Import

You should now be able to see Singapore National Root CA - B1 under your Trusted Certificates.

15

Enable certification revocation checking

This can be found under Preferences > Signatures > Verification

16

All done!

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