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ASN.1 Decoder

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  • 10-03-2009 6:16pm
    #1
    Martyr
    Closed Accounts Posts: 1,567 ✭✭✭


    Hey folks, anyone know a decent (open source if possible) ASN.1 decoder?
    i need it for kerberos packets specically and don't want to write my own or piece together from several
    sources but its looking like i might have to..

    thanks


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    #2
    TeaServer
    Registered Users Posts: 157 ✭✭TeaServer


    Well not knowing the exact details of what you need to do in the long term will make recommending something suitable tricky. In my experience finding Open source ASN.1 decoders that are any good is very difficult.

    These guys http://www.obj-sys.com/index.php offer a one month full feature trial, after the month you can still decode the ASN, but the tags wont be matched to the ASN.1 spec. Its very powerful, you can edit and create ASN records - great for testing (during the trial time only). Its expensive to get a full license though

    Another option I have used in the past was to use the perl module Convert::ASN1 and write a small wrapper script that does what ever you need to do.

    You will have to write some code, but its straightforward and you get exactly what you need....

    /T


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    #3
    Martyr
    Closed Accounts Posts: 1,567 ✭✭✭Martyr


    just incase anyone looks here, there is a program called 'dumpasn1' written by Peter Gutmann - its very good.

    http://www.cs.auckland.ac.nz/~pgut001/dumpasn1.c


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