Adding standalone RSA code

Mark Murray markm at FreeBSD.ORG
Fri Dec 10 02:15:15 PST 2004

Colin Percival writes:
> Mark Murray wrote:
> > Colin Percival writes:
> >>I was comparing /usr/lib/libcrypto.a (1.7 MB on my system) to the sum
> >>of the sizes of the object files built from my library code (38 kB).
> >>
> >>If you look at the number of lines of C files (counted using `wc -l`
> >>since I don't want to bother installing sloccount), my code is 1489
> >>lines compared to openssl's 202982 lines.
> > 
> > Do you have a version of your code linked against OpenSSL? What is the 
> > size difference between a static link of your code vs a static link 
> > against OpenSSL?
> I don't have a version using openssl, but my key generation program
> (statically linked against my crypto code) is 37kB, while a program
> which calls RSA_generate_key (statically linked against openssl) is
> 240kB.  So even under the most favourable conditions (adding overhead
> to my code but not to openssl) it's a size ratio of more than 6.


I must profess to having a degree of discomfort with duplicated

240k is not a big binary, and it sounds like your applet is one that
may get heavy use. Its not built for speed; how much of a problem is
this? If OpenSSL grows hardware BigNum support, your app will not
benefit; how will this affect the user? Is size really a concern?
I can't find a disk smaller than 10 GB at my local dealer.

Mark Murray
iumop ap!sdn w,I idlaH

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