On Tue, Sep 15, 1998 at 09:49:08PM -0500, Zed Pobre wrote: > > Because just making the thing RSAREF-using violates the license AFAIK. > > This is incorrect. If that were true, the MIT and PGP Inc > versions could never have been distributed (they both use RSAREF). > The original RSA library written by Zimmerman was MPILIB, and is used > in the international version. MIT version of pgp5? still, I think it is not considered acceptable to the company for you to take the i version and make it a us version. > > Lets see... RSAREF is slower and violates pgp license, but pgp5-i is faster > > and violates a patent who says you're free to use RSA non-commercially > > provided you use their version of it. > > MPILIB is in fact faster (nominally) than RSAREF. I think most > people will only notice the difference on slower machines or during > key generation. You're also mixing the terms "patent" and "license" > here. IIRC, PKP holds a patent valid only in the USA on the use of > RSA in encryption, and has licensed it for non-commercial use provided > that only the RSAREF implementation is used. I thought RSA owned the patent, my mistake. > > If you can't win for losing, use the faster one. If I'm wrong about the > > copyright, you may consider making that RSAREF version. Better yet, since > > RSAREF cannot be exported, but is in non-us since somebody already HAS, let > > someone outside the US do it, safer that way. > > If you're not particularly concerned about breaking the law, use > the MPILIB one. If you are, a few compile-time defines documented in > the source code will create a version that uses RSAREF instead of > MPILIB. A few more flags (and two file deletions, IIRC) will generate > a version of PGP completely indistinguishable from the one that PGP > Inc provides. The only licensing issue is the "You may not distribute > any derivative works" bit in the Freeware license, but nobody has gone > after Schumacher yet, so it may be legal under one of the other two > main licenses included with the source. A binary of the i version modified to work with RSAREF may be considered derived, depending. I'll have to download pgp5 source to look.
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