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From: valerij zaporogeci <vlrzprgts@gmail.com>
To: Michael Zimmermann <sigmaepsilon92@gmail.com>
Cc: edk2-devel <edk2-devel@lists.01.org>
Subject: Re: Crc32
Date: Wed, 31 Aug 2016 17:31:34 +0300	[thread overview]
Message-ID: <CANPuzFyV=GmQ74-L5Ui09KczBQXfPz4NXA3XMSkve4muY78ciQ@mail.gmail.com> (raw)
In-Reply-To: <CAN9vWDKDx+s7n4YYZv69dc9J01rHgrj=mJEH776m-+j=1OwmJQ@mail.gmail.com>

yes. it does as you said. very confusing in fact.

2016-08-31 6:54 GMT+03:00, Michael Zimmermann <sigmaepsilon92@gmail.com>:
> it doesn't. it just seems that if the crc text field is not empty it
> calculates the crc of the crc, so you have to hit the "Reset CRC" button
> before reprocessing the text.
>
> On Wed, Aug 31, 2016 at 3:11 AM, valerij zaporogeci <vlrzprgts@gmail.com>
> wrote:
>
>> >> after testing it it indeed produces CCITT32 results like this online
>> generator:
>> >> http://g6auc.me.uk/CRC32/index.html
>>
>> I only now noticed that this  "calculator", gives DIFFERENT values on
>> the same input, no matter hex or text based.
>> Interestingly, how it could produce the same results as the Tianocore
>> implementation?
>>
>> I was thinking that all the difference in the Tianocore impl. from the
>> pure crc is appending 32 1's at the beginning of the (input) message
>> and then negating the Crc itself in the end.
>>
>> I see, the only way to check is to pull off the Tianocore function and
>> check.)
>> _______________________________________________
>> edk2-devel mailing list
>> edk2-devel@lists.01.org
>> https://lists.01.org/mailman/listinfo/edk2-devel
>>
>


  reply	other threads:[~2016-08-31 14:31 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-30  0:54 Crc32 valerij zaporogeci
2016-08-30 11:08 ` Crc32 Michael Zimmermann
2016-08-30 13:32   ` Crc32 valerij zaporogeci
2016-08-30 14:09     ` Crc32 Andrew Fish
2016-08-30 15:17       ` Crc32 valerij zaporogeci
2016-08-30 16:15         ` Crc32 Andrew Fish
2016-08-31  1:11           ` Crc32 valerij zaporogeci
2016-08-31  3:54             ` Crc32 Michael Zimmermann
2016-08-31 14:31               ` valerij zaporogeci [this message]
2016-08-31 23:27                 ` Crc32 valerij zaporogeci
2016-09-01 22:36                   ` Crc32 valerij zaporogeci

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