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Thread: KGB compression - lol or not ?

  1. #1
    Member Surfer's Avatar
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    http://slil.ru/24774149 - office installation
    440 Mb packed in 1.5 Mb
    CRC is identical with original files

    Fake ? WTF ?

  2. #2
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    AFAIK KGB=PAQ+UHARC+some_else_stolen_compressor

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    Quote Originally Posted by nimdamsk
    AFAIK KGB=PAQ+UHARC+some_else_stolen_compressor
    That was Infima!

    KGB 1 = PAQ6 v2 compression algorithm.

    KGB 2 = PAQ1 - PAQ7 compression algorithms.

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    Programmer Bulat Ziganshin's Avatar
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    Quote Originally Posted by Surfer
    CRC is identical with original files
    its easy to fake CRC values. try md5 instead

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    The joke again?
    I remember this "case" long time ago in google gruops and in maximumcompression
    I download the file a examine it, maybe im' wrong but looks scam/fake

    At first look i see the header "KGB_arch -6"

  6. #6
    Member Surfer's Avatar
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    looks like not fake, I extract some files from begin of archive and they promise be valid

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    mmm. me too i started to unpack and looked inside the executables, and i saw "verisign, microsoft, reroutes etc etc"

    I tried to recompress the file osetup.dll (6.580.424) with 7-zip and its 1.021.939 bytes

    Edit:
    Finally i knowed!! nice big files empty!! have a look at the file ExcelLR.cab or ExcelMUI.msi ohhh are empty, anyway i wait for the 100% of "unpacking"

  8. #8
    The Founder encode's Avatar
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    Quote Originally Posted by Surfer
    440 Mb packed in 1.5 Mb
    Its a big profanity. Such incredible things already KILLED many compression related forums. Just keep it away from ENCODE.RU...

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    i can pack 2 terabytes in 3kb's how?
    with a files filled whit 0's

  10. #10
    The Founder encode's Avatar
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    It is possible to pack a file of any size filled with one byte to 5...9 bytes:

    __int 64 size; // 8 bytes
    unsigned char repeatedByte; // 1 byte

    or

    unsigned int size; // 4 bytes
    unsigned char repeatedByte; // 1 byte

    This one calls RLE.


  11. #11
    Member Surfer's Avatar
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    Yes, that was realy fake
    In russian http://kpnemo.ru/files/2007/08/17/mi...07_na_diskete/

    But some files from archive is not filled with repeating symbols =)

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