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doc: describe root cert update process
PR-URL: #25113 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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# Updating the Root Certificates | ||
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Node.js contains a compiled-in set of root certificates used as trust anchors | ||
for TLS certificate validation. | ||
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The certificates come from Mozilla, specifically NSS's `certdata.txt` file. | ||
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The PEM encodings of the certificates are converted to C strings, and committed | ||
in `src/node_root_certs.h`. | ||
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## When to update | ||
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Root certificates should be updated sometime after Mozilla makes an NSS release, | ||
check the [NSS release schedule][]. | ||
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## Process | ||
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Commands assume that the current working directory is the root of a checkout of | ||
the nodejs/node repository. | ||
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1. Find NSS metadata for update. | ||
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The latest released NSS version, release date, Firefox version, and Firefox | ||
release date can be found in the [NSS release schedule][]. | ||
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The tag to fetch `certdata.txt` from is found by looking for the release | ||
version in the [tag list][]. | ||
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2. Update `certdata.txt` from the NSS release tag. | ||
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Update the tag in the commands below, and run: | ||
```shell | ||
cd tools/ | ||
./mk-ca-bundle -v 2>_before | ||
curl -O https://hg.mozilla.org/projects/nss/raw-file/NSS_3_41_RTM/lib/ckfw/builtins/certdata.txt | ||
``` | ||
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The `_before` file will be used later. Verify that running `mk-ca-bundle` made | ||
no changes to `src/node_root_certs.h`. If it did, something went wrong with the | ||
previous update. Seek help! | ||
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Update metadata in the message below, and commit `certdata.txt`: | ||
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```text | ||
tools: update certdata.txt | ||
This is the certdata.txt[0] from NSS 3.41, released on 2018-12-03. | ||
This is the version of NSS that will ship in Firefox 65 on | ||
2018-12-11. | ||
[0] https://hg.mozilla.org/projects/nss/raw-file/NSS_3_41_RTM/lib/ckfw/builtins/certdata.txt | ||
``` | ||
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3. Update `node_root_certs.h` from `certdata.txt`. | ||
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Run the command below: | ||
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```shell | ||
./mk-ca-bundle.pl -v 2>_after | ||
``` | ||
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Confirm that `../src/node_root_certs.h` was updated. | ||
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Determine what changes were made by diffing the before and after files: | ||
```shell | ||
% diff _before _after | ||
11d10 | ||
< Parsing: Visa eCommerce Root | ||
106d104 | ||
< Parsing: TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5 | ||
113,117d110 | ||
< Parsing: Certplus Root CA G1 | ||
< Parsing: Certplus Root CA G2 | ||
< Parsing: OpenTrust Root CA G1 | ||
< Parsing: OpenTrust Root CA G2 | ||
< Parsing: OpenTrust Root CA G3 | ||
134c127,136 | ||
< Done (133 CA certs processed, 20 skipped). | ||
--- | ||
> Parsing: GlobalSign Root CA - R6 | ||
> Parsing: OISTE WISeKey Global Root GC CA | ||
> Parsing: GTS Root R1 | ||
> Parsing: GTS Root R2 | ||
> Parsing: GTS Root R3 | ||
> Parsing: GTS Root R4 | ||
> Parsing: UCA Global G2 Root | ||
> Parsing: UCA Extended Validation Root | ||
> Parsing: Certigna Root CA | ||
> Done (135 CA certs processed, 16 skipped). | ||
``` | ||
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Use the diff to update the message below, and commit `src/node_root_certs.h`: | ||
```text | ||
crypto: update root certificates | ||
Update the list of root certificates in src/node_root_certs.h with | ||
tools/mk-ca-bundle.pl. | ||
Certificates added: | ||
- GlobalSign Root CA - R6 | ||
- OISTE WISeKey Global Root GC CA | ||
- GTS Root R1 | ||
- GTS Root R2 | ||
- GTS Root R3 | ||
- GTS Root R4 | ||
- UCA Global G2 Root | ||
- UCA Extended Validation Root | ||
- Certigna Root CA | ||
Certificates removed: | ||
- Visa eCommerce Root | ||
- TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5 | ||
- Certplus Root CA G1 | ||
- Certplus Root CA G2 | ||
- OpenTrust Root CA G1 | ||
- OpenTrust Root CA G2 | ||
- OpenTrust Root CA G3 | ||
``` | ||
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[NSS release schedule]: https://wiki.mozilla.org/NSS:Release_Versions | ||
[tag list]: https://hg.mozilla.org/projects/nss/tags |