Re: [ftpext] I-D Action:draft-ietf-ftpext2-hash-00.txt

Lothar Kimmeringer <lothar@kimmeringer.de> Sat, 08 January 2011 17:27 UTC

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Date: Sat, 08 Jan 2011 18:29:41 +0100
From: Lothar Kimmeringer <lothar@kimmeringer.de>
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Subject: Re: [ftpext] I-D Action:draft-ietf-ftpext2-hash-00.txt
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Am 05.01.2011 16:26, schrieb Richard Koenning:
> Lothar Kimmeringer wrote:
>
>> The data being used for calculating the hash MUST be the original
>> data before any transformations take place (e.g. when transfering
>> in ASCII mode)
>
> The data on the server before the transformation isn't necessarily
 > the same as the data on the client after undoing the transformation.
 > E.g. regard systems with different EOL conventions (LF on Unix
 > systems, CR on Mac OS (afaik), CR LF on Windows systems and even more
 > complicated conventions on mainframe systems), the common denominator
 > of the FTP partners is the data on the wire, therefore the data being
 > used for calculating the hash MUST be the data after the
 > transformations take place on the sending side and before the
 > transformations take place on the receiving side (with the SIZE
 > command we have already a similar situation with the same rule).

We thought of the same, your description is more common than mine,
where I only regarded the server side when data is being sent from
client to sever.


Best regards, Lothar
-- 
Lothar Kimmeringer                E-Mail: spamfang@kimmeringer.de
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