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A comment on Disclosure of three 0-day iOS vulnerabilities. Parent comment

Re:Disclosure of three 0-day iOS vulnerabilities by howinteresting on Friday September 24, 2021 @08:41AM (#28641550)
Android does them just fine: https://source.android.com/devices/tech/ota/reduce_size

In particular, bsdiff has been around for a very long time and is an industry standard binary diffing tool.

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Re:Disclosure of three 0-day iOS vulnerabilities by samhw on Friday September 24, 2021 @10:38AM (#28643027)
Yeah, I mentioned bsdiff in my original comment. I don't think Android uses it for operating system updates, though, as far as I can tell. I believe that page is describing APK updates (i.e. app updates).
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Re:Disclosure of three 0-day iOS vulnerabilities by howinteresting on Friday September 24, 2021 @01:19PM (#28645295)
Well, monthly OS updates for Android tend to be just a few megabytes, so I'm presuming they use some sort of binary diffing algorithm.
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