> For the complete documentation index, see [llms.txt](https://docs.editran.onesait.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.editran.onesait.com/documentacion-editran/ibm-editran-v5.3-iseries-en/editran-ff/appendix-a/extract-certificate-from-the-ca.md).
# Extract certificate from the CA
The installation package itself includes several CA certificates, including the DNI CA, Editran, FNMT and TGSS, so it is not necessary to carry out this process. However, it is described here in case any CA changes its certificate.
In this example we will extract the TGSS certificate. If we do not have the CA certificate, we can obtain it by taking one of the signers' certificates, opening it and going to the Certification Path tab. We select SGI (CA) and double-click
We go to Details, copy to file and another window opens. We select X.509 Encoded Binary DER and save it
Now we already have all the necessary data
Once we have the CA, we would add it to the store as mentioned in the section Error! Reference source not found.
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