mdadnan
asked on
Another CRC check question but this time no second file to compare with.
I am related to production biz and I download important big files about 2-30MB, sent me over by my affiliates and clients. I need to get them checked using a CRC check over Delphi to check their integrity, and to verify not a bit is changed during the download. Ofcourse I don't have anyother file to compare the bytes, therefore, a brief explanation with code will be greatly appreciated.
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mdadnan:
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This old question needs to be finalized -- accept an answer, split points, or get a refund. For information on your options, please click here-> http:/help/closing.jsp#1
EXPERTS:
Post your closing recommendations! No comment means you don't care.
Hi!
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Split between Motaz and SimesA
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...Snehanshu
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No comment has been added lately and this question is therefore classified abandoned.
If asker wishes to close the question, then refer to
https://www.experts-exchange.com/help/closing.jsp
Otherwise, I will leave a recommendation in the Cleanup topic area that this question is:
Split between Motaz and SimesA
Please leave any comments here within the next seven days. It is assumed that any participant not responding to this request is no longer interested in its final disposition.
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
...Snehanshu
EE Cleanup Volunteer
Forced accept
Computer101
E-E Admin
Computer101
E-E Admin
ASKER
But I can't compare the bytes with the server file and the files after download. There are some restrictions that I have to follow before or after download, lets say the download is encrypted, therefore your solution will not work on these terms.
Let me be brief a little on what I am looking for. Lets say I download an Mpeg file sizing about 40MB somewhere with encrypted download or from Kaaza, and there is no second file to compare with online or offline. What I am looking for is a CRC or anyother check maybe specific for file types so that I can verify its integrity and to make sure it isn't corrupted during download. A production file like a large WAV or MP3 file with a changed bit or even byte will introduce a large noise during playback.
But still you did very good with your logic. I have increased points to 100. Thanks again for all your help!