[kepler-dev] Jacksum package

[Dan Higgins]

Christopher,
    There is not a MD5 class, but you can generate one; see
http://forum.java.sun.com/thread.jspa?threadID=528165&messageID=2828789

Dan

Christopher Brooks wrote:

>Hi Dan
>Looks interesting.  It is GPL'd though.
>
>One idea that is probably overkill would be to use the security actors
>to create a signature for the first file and then compare the
>signature for the second file.
>
>This could be slow, and requires creating a certificate, but it does
>not require yet another jar file.
>
>$PTII/ptolemy/actor/lib/security/demo/Signature/Signature.xml is 
>an example of a man in the middle attack, where a message that has
>been tampered with has a different signature.
>
>Anyway, the above seems like overkill, but I thought I'd pass it on.
>
>I'm a little surprised there is not a MD5 class in Sun's Java classes.
>
>MessageDigest might be of interest:
>http://java.sun.com/j2se/1.5.0/docs/guide/security/CryptoSpec.html#MessageDigest 
>
>_Christopher
>--------
>
>    Hi All,
>        Does anyone out there have any experience with the Jacksum project 
>    (http://www.jonelo.de/java/jacksum/index.html) for computing and 
>    verifying checksums, CRCs and message digests (known as hash values and 
>    fingerprints). This is java opensource code that I am considering for a 
>    file comparison test actor.
>    
>    Dan
>    
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>  
>