I have several variants of this certificate. The first dozen or so of the base64 characters match, then diverge. Each is exactly 640 base64 characters (so 480 bytes?). No identifying information or clues are present, other than an "id" in guid format.
If I dump this into its own file, I imagine I'll have to add the "begin certificate" header and footer to it. Do I have to do linebreaks/wrapping? Which tools can I use to identify what format this is (or at least rule them out)? My experience with this stuff doesn't go much farther than uploading a key to github or something like that, and I don't ever have any reason to look inside the files (and wouldn't see much if I did).
This (base64) value is transmitted in some xhr endpoint via xml in a tag. I suspect it's just used to validate a signature on another file, but it seems a little out of place and I'd like to learn more about it.
<Certificate>
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
</Certificate>
This one is dated August 25th:
<Certificate>
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
</Certificate>
This one is dated August 18th:
<Certificate>
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
</Certificate>
This one is dated August 11th:
<Certificate>
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
</Certificate>
The portion of it that is fqiMTc9TxZw+55we2D8GudFustjIp+jjxHhUomzLtd matches for the above.