CDRouter Support

What root certificate must be installed to verify acs.cdroutertest.com.pem?

knowledge-base version 12.6

When HTTPS is used as the transport for TR-069 CWMP sessions, CDRouter’s ACS and Download Server use certificates issued by Sectigo (formerly Comodo) by default. These certificates require other certificates from Comodo’s Certificate Authority (CA) entities in order for the DUT to validate them when setting up an SSL/TLS connection.

Typically, the Sectigo/Comodo Root CA certificate is already pre-installed in the DUT’s list of trusted certificates. In some cases, however, the Root CA certificate must be manually imported.

All of CDRouter’s certificate files can be found in the /usr/cdrouter/tests directory of your CDRouter system:

  • The acs.cdroutertest.com.pem file contains the ACS certificate.

  • The acs-download.cdroutertest.com.pem file contains the download server certificate (used for executing SSL file transfers related to Download/Upload RPC methods)

  • The acs.cdroutertest.com-ca.pem file contains Sectigo/Comodo’s intermediate CA certificate.

  • The acs.cdroutertest.com-rootca.pem file contains Sectigo/Comodo’s root CA.

You can also download the most recent versions of these files from the QA Cafe Customer Support site: Current ACS Certificates.

Most devices allow certificates to be imported through the management interface or by following specific instructions from the manufacturer. Check the device documentation for the requirements and procedure pertaining to your device.

Note: In some cases, the certificate data may need to be converted from PEM (plain text) to DER (binary) format. (See: “Converting from PEM to DER format” for more details)

Current Sectigo/Comodo Root CA

CDRouter 12.1 and newer versions contain the latest Sectigo/Comodo Root CA certificate, “USERTrust RSA Certification Authority” in the “acs.cdroutertest.com-rootca.pem” file. It uses SHA384 with RSA 4096-bit encryption, and expires 2038-01-18.

Subject: CN = USERTrust RSA Certification Authority
Not Before: Feb  1 00:00:00 2010 GMT
Not After : Jan 18 23:59:59 2038 GMT
Public Key Algorithm: rsaEncryption
RSA Public-Key: (4096 bit)

-----BEGIN CERTIFICATE-----
MIIF3jCCA8agAwIBAgIQAf1tMPyjylGoG7xkDjUDLTANBgkqhkiG9w0BAQwFADCB
iDELMAkGA1UEBhMCVVMxEzARBgNVBAgTCk5ldyBKZXJzZXkxFDASBgNVBAcTC0pl
cnNleSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNUIE5ldHdvcmsxLjAsBgNV
BAMTJVVTRVJUcnVzdCBSU0EgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkwHhcNMTAw
MjAxMDAwMDAwWhcNMzgwMTE4MjM1OTU5WjCBiDELMAkGA1UEBhMCVVMxEzARBgNV
BAgTCk5ldyBKZXJzZXkxFDASBgNVBAcTC0plcnNleSBDaXR5MR4wHAYDVQQKExVU
aGUgVVNFUlRSVVNUIE5ldHdvcmsxLjAsBgNVBAMTJVVTRVJUcnVzdCBSU0EgQ2Vy
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Hg9j1uliutZfVS7qXMYoCAQlObgOK6nyTJccBz8NUvXt7y+CDwIDAQABo0IwQDAd
BgNVHQ4EFgQUU3m/WqorSs9UgOHYm8Cd8rIDZsswDgYDVR0PAQH/BAQDAgEGMA8G
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ATiUFJVDBwn7YKnuHKsSjKCaXqeYalltiz8I+8jRRa8YFWSQEg9zKC7F4iRO/Fjs
8PRF/iKz6y+O0tlFYQXBl2+odnKPi4w2r78NBc5xjeambx9spnFixdjQg3IM8WcR
iQycE0xyNN+81XHfqnHd4blsjDwSXWXavVcStkNr/+XeTWYRUc+ZruwXtuhxkYze
Sf7dNXGiFSeUHM9h4ya7b6NnJSFd5t0dCy5oGzuCr+yDZ4XUmFF0sbmZgIn/f3gZ
XHlKYC6SQK5MNyosycdiyA5d9zZbyuAlJQG03RoHnHcAP9Dc1ew91Pq7P8yF1m9/
qS3fuQL39ZeatTXaw2ewh0qpKJ4jjv9cJ2vhsE/zB+4ALtRZh8tSQZXq9EfX7mRB
VXyNWQKV3WKdwrnuWih0hKWbt5DHDAff9Yk2dDLWKMGwsAvgnEzDHNb842m1R0aB
L6KCq9NjRHDEjf8tM7qtj3u1cIiuPhnPQCjY/MiQu12ZIvVS5ljFH4gxQ+6IHdfG
jjxDah2nGN59PRbxYvnKkKj9
-----END CERTIFICATE-----

Expired Sectigo/Comodo Root CA

Previous versions of CDRouter contain an older Root CA certificate, “AddTrust External CA Root”. That certifice uses SHA1 with RSA 2048-bit encryption, and expires May 30, 2020. It is provided here for comparison, but should no longer be used to validate CDRouter’s ACS and Download certificates.

For more information about that Sectigo Chain Hierarchy and CAs, please see the Sectigo KnowlegeBase.

Subject: CN = AddTrust External CA Root
Valid Not Before: May 30 10:48:38 2000 GMT
Valid Not After : May 30 10:48:38 2020 GMT
Public Key Algorithm: rsaEncryption
RSA Public-Key: (2048 bit)

-----BEGIN CERTIFICATE-----
MIIENjCCAx6gAwIBAgIBATANBgkqhkiG9w0BAQUFADBvMQswCQYDVQQGEwJTRTEU
MBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4dGVybmFs
IFRUUCBOZXR3b3JrMSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290
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FDASBgNVBAoTC0FkZFRydXN0IEFCMSYwJAYDVQQLEx1BZGRUcnVzdCBFeHRlcm5h
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6wwCURQtjr0W4MHfRnXnJK3s9EK0hZNwEGe6nQY1ShjTK3rMUUKhemPR5ruhxSvC
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c4g/VhsxOBi0cQ+azcgOno4uG+GMmIPLHzHxREzGBHNJdmAPx/i9F4BrLunMTA5a
mnkPIAou1Z5jJh5VkpTYghdae9C8x49OhgQ=
-----END CERTIFICATE-----

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