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  2. RPG400-L
  3. June 2005

Re: Un-encrypting data on the iSeries

> I need some help with trying to un-encrypting part of a data file that
> I have on the iSeries. The data is encrypted using something  called
> "FIPS SHA1".  From the very little I understand about this it's a hash
> algorithm.

It's a "one way" hash algorithm. That is, it's easy to go from the data to
the hash, but very difficult to go from the hash to the data. This means,
basically, that you cannot do what you're trying to do. There must be some
misunderstanding.

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