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<H1>[pycrypto] same RSA.construct fails on OSX</H1>
<B>Legrandin</B>
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TITLE="[pycrypto] same RSA.construct fails on OSX">gooksankoo at hoiptorrow.mailexpire.com
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<I>Fri Jan 20 10:22:50 EST 2012</I>
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<PRE>Hi Antoine,
><i> I've just found that simply removing p (or 'd' as it should be called..)
</I>><i> is enough to fix it, so the code becomes:
</I>><i> if d==0:
</I>><i>  k = RSA.construct((long(m), long(e)))
</I>><i> else:
</I>><i>  k = RSA.construct((long(m), long(e), long(d)))
</I>
In the first case you generate a public key no matter which library
you have installed.
In the second case you generate a private key, but only if you are on 2.5.
Do you need a public key or a private key?
If you need a public key, just use 2 arguments.
If you need a private key and you want it to work with all pycrypto
versions, go and look for the remaining 2 parameters (p and q)... ;-)
>><i> With previous version you had to provide at least 5 elements,
</I>>><i> m+e+d+p+q (I don't recall how they complain if you provide only 3).
</I>><i> According to the docs, it's 2 minimum (as above), anyone know if the
</I>><i> code above is going to have problems running on distros with old
</I>><i> versions of pycrypto?
</I>
I would simply assume it will have problem with previous versions:
it's clearly off spec for them.
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