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Having difficulty visiting an mTLS-authenticated website from GrapheneOS [SOLVED]
(lemmy.thewooskeys.com)
this post was submitted on 04 Sep 2024
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I'm pretty sure you need to install it using "CA certificate" rather than the "VPN and app user certificate" option.
Thanks for the reply, @Evkob@lemmy.ca.
I tried to install my client cert in "CA Certificate" but the certificate manager app in GrapheneOS said that it was the wrong kind of cert to be used in "CA Certificate". It is, after all, a client cert, not a CA cert.
:(
After some searching, maybe following the instructions on this blog post would work?
I'm by no means an expert though, so take my suggestions with a grain of salt.
Good on you for trying to help though, seriously. And OP I wanna hear if you're able to get it squared away.
Thanks for your research and the suggestion, @Evkob@lemmy.ca.
I wasn't able to make that work, but I don't think it was trying to solve the problem I'm having, anyway. That procedure was to add self signed SSL certificate to Android, but my certificate is neither self-signed nor an SSL cert. At least I think not - I find certs very confusing. The cert I'm trying to work with is an mTLS cert, a client cert. It's not used to establish a secure SSL connections, it's used to verify that I (the person with the cert) and authorized to use the app.
Additionally, I'm able to successfully install the cert into Android, but the problem is that it seems to be ignored. The mTLS cert is installed in GrapheneOS's "VPN & App User Certificate" section, and my CA cert is installed in the "CA Certificate" section. Vanadium, Fennec, and Mull browsers just aren't using them. :(
Like I said, not an expert haha (thanks for explaining what mTLS is because I had assumed I knew but truly didn't)
That being said, I found a reddit thread detailing what seems to be the same issue as you, with OP linking a Stack Exchange post with their solution.
[SOLVED!] That Stack Exchange post was the solution! I had to ask ChatGPT for assistance (e.g., "how do I view the contents of a .crt and a .p12?", "how do I add a CA to a client cert?"), but it worked. Thanks for your help, @Evkob@lemmy.ca.
I don't think I would have ever thought that my client cert didn't contain the CA, especially because when I clicked on the client cert that was installed in GrapheneOS, it showed me a summary that said it did contain a CA! grrrr
(tagging @one_knight_scripting@lemmy.world as he wanted to know the solution)
Wow! That sounds exactly like my issue. I'll try the workaround tomorrow. Thanks, @evkob@lemmy.ca.