Re: crc not installed but rsync using it? ...
- To: debian-user@lists.debian.org
- Cc: David Wright <deblis@lionunicorn.co.uk>
- Subject: Re: crc not installed but rsync using it? ...
- From: Fabrice BAUZAC-STEHLY <noon@mykolab.com>
- Date: Thu, 01 Oct 2020 13:19:52 +0200
- Message-id: <[🔎] 87pn62p50n.fsf@asus>
- In-reply-to: <20200929144511.GA7214@axis.corp>
- References: <CAFakBwgrUJ-OSju5egyzwhXptUtzbZBHin-qHC5Xx_mh=m5dFw@mail.gmail.com> <CAFakBwi=xatJaiEij7J+aefhBcon2pdFPus7EL_VXz6bySF2aw@mail.gmail.com> <20200929144511.GA7214@axis.corp>
David Wright writes:
> On Tue 29 Sep 2020 at 15:50:35 (+0200), Albretch Mueller wrote:
>> But how could you have some assurance that that data relates to what
>> their users thought of to be?
>
> You can't. That's not what CRCs are for. They're not cryptographic,
> so they are useless for any type of assurance that the data is intact.
More precisely, hashes that are not cryptographic-grade are useless for
assurance that the data has not been modified by a third-party. They
can still be useful for assurance that data has not been altered by wire
issues and other physical (non-human) issues.
--
Fabrice BAUZAC-STEHLY
PGP 015AE9B25DCB0511D200A75DE5674DEA514C891D
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