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A comment on You can do a lot with an empty file. Parent comment

Re:You can do a lot with an empty file by acranox on Wednesday April 06, 2022 @06:44PM (#30938389)
debsums https://manpages.ubuntu.com/manpages/jammy/en/man1/debsums.1...
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Re:You can do a lot with an empty file by wyldfire on Wednesday April 06, 2022 @06:47PM (#30938408)
md5? Is 'jammy' a remarkably old platform? I hope so.

But regardless of the signature algorithm, thanks for sharing the mechanism.

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Re:You can do a lot with an empty file by userbinator on Wednesday April 06, 2022 @07:12PM (#30938613)
2002 according to the copyright. But it also has this note:

debsums is intended primarily as a way of determining what installed files have been locally modified by the administrator or damaged by media errors and is of limited use as a security tool.

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Re:You can do a lot with an empty file by Dylan16807 on Wednesday April 06, 2022 @11:18PM (#30940267)
> md5? Is 'jammy' a remarkably old platform? I hope so.

Jammy comes out next month.

Though if you encounter an md5 second preimage attack that's pretty impressive.

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