> The International Version of PGP is a slightly modified algorithm with
> fewer bits. Currently, it is illegal under the Data Encryption and
> Privacy Act (modified) of 1995 to export encryption programs which use
> 56+ bits outside the United States.
The international version supports at least 1024 bits. That is the
reason why the US government has been giving Phil Zimmerman (author
of PGP) a hard time, though he recently won his court case.
> There is, of course, a workaround to get superior encryption with the
> Internation versions (not only of pgp, but RSA and DES as well). Make
> 3 keys and do the following:
>
> 1) encrypt with key 1
> 2) decrypt with key 2
> 3) encrypt with key 3
I'm not sure about PGP, but DES actually gets _weaker_ if encrypted with
two keys. Three keys does make it much stronger, though, as you say.
Brian
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