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Is there a Java CRC/checksum command?

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  • 24-05-2001 1:26pm
    #1
    Hobbes
    Registered Users Posts: 21,264 ✭✭✭✭


    I want to create a checksum on a file. Just wondering if there is a command in Java to do this or do I have to write my own?

    I see there is a command in java.util.zip (CheckedInputStream using Adler32) but I can't seem to get it to work properly :/

    Even tried this example. As usual I must be doing something wrong. frown.gif



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    #2
    satchmo
    Moderators, Music Moderators Posts: 1,481 Mod ✭✭✭✭satchmo


    Have you tried java.util.zip.CRC32?
    Will that example just not run, or does it give incorrect checksums, or what's the problem?


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    #3
    spod
    Registered Users Posts: 332 ✭✭spod


    javax.crypto is also well worth checking out.

    has md5 etc. hashing.

    haven't used it in a year, but cryptix used to have a good export friendly implementation of alot of the library.

    Licensing might be slightly more non us friendly for the official sun product now.

    spd


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    #4
    Hobbes
    Registered Users Posts: 21,264 ✭✭✭✭Hobbes


    Thanks Spod. biggrin.gif Eventually found that (well java.security.* actually) and I'm using the digestinputstream to create the checksum.

    Appears to be working quite well.



    [This message has been edited by Hobbes (edited 29-05-2001).]


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