ASK : Software to check Hash (md5/sha1) from server before download

Discussion in 'Application Software' started by ayampetok, May 26, 2010.

  1. ayampetok

    ayampetok MDL Novice

    Sep 14, 2009
    6
    0
    0
    I know programs to check file hash like HashCalc etc.
    I can check the hash after I download the file.
    Is there any programs to check hash from server before I download it?
    I mean, if I got a download link, could I check the file hash before I download, or is it maybe impossible as the server don't provide it?
     
  2. LQQL

    LQQL MDL Addicted

    Apr 21, 2009
    773
    120
    30
    I'm afraid no.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. Tito

    Tito Super Mod / Adviser
    Staff Member

    Nov 30, 2009
    17,213
    14,772
    340
    It can't be possible, if the uploader don't supply any of the hashes............ o_O
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  4. Stannieman

    Stannieman MDL Guru

    Sep 4, 2009
    2,232
    1,795
    90
    It's technicaly possible but then the hash calc tool has to run on the server and that gives a lot of server load, so no it's not possible. I like the principle however, check hash the first time a file comes on the server and keep it until the file gets changed. This way users can always check hashes from every file (even html files). But it's indeed not possible except if you can install such a ting on the server.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  5. FreeStyler

    FreeStyler MDL Guru

    Jun 23, 2007
    3,501
    3,609
    120
    This is how i do it on sites... once a file (i am not talking big iso's here) is uploaded calculate hash, store in database so uploader/downloader can verify checksums
     
  6. ayampetok

    ayampetok MDL Novice

    Sep 14, 2009
    6
    0
    0
    Thanks for the reply everyone..
    Seems like hash check only possible on server side.
    I thought it will be alot easier to find mirrors for files with hash check rather than file names..:p
    now I know its not possible.. o_O

    thanks again for the info.
     
  7. vartaxe

    vartaxe MDL Novice

    Dec 15, 2008
    22
    0
    0
    maybe there's a way to get a aproximative hash if we download the first and last mb of the file, of course it would not be the full hash but still could be usefull no?
     
  8. DKane

    DKane MDL Junior Member

    Sep 18, 2009
    63
    63
    0
    I just ROFL'd. I know it might seem sensible to you vartaxe, but that's one of the funniest things I've heard from a n00b in a long time.

    The hash of one file and another that differ by *one bit* are completely different, that's basically the whole point of hashes.
     
  9. JCLB

    JCLB MDL Novice

    Jul 13, 2009
    15
    18
    0
    When you don't have a hash on the website, the only way to be sure there had not been corruption during data transfer and storage process is to download the files 2 times and compare them, I would advise you to use HashTab instead of HashCalc, it integrates in windows explorer file's properties pane.
     
  10. vartaxe

    vartaxe MDL Novice

    Dec 15, 2008
    22
    0
    0
    well congrats...

    did i say the inverse?