[Botan-devel] Reducing Botan size

[Jack Lloyd]

Hi,

This will be a bit harder than the ciphers, because the public keys
interact with the ASN.1/BER portions of the code. First step is
removing all the x509* code except x509_key.cpp, as well as:

pkcs10.{h,cpp}
certstore.{h,cpp}
crl_ent.{h,cpp}

[You can also probably drop some of the asn1_ files, like asn1_ku,
asn1_alt, asn1_att, etc]

And then edit libstate.cpp and libstate.h and remove the declarations
and definitions of set_x509_state and x509_state. That will dump the
cert/CRL code which can take up a lot of size. Dropping the rest of
the ASN.1 code would require heavy surgery.

Dropping public key algorithms can help a lot. Just edit pk_algs.cpp
to remove the reference and then you can savely delete the sources
(you can also save even more space by editing def_ops.cpp to remove
the lowlevel operations, but that's a little more complex).

-Jack

On Sat, Feb 17, 2007 at 01:55:10PM +0200, Felix Gartsman wrote:
> Hello,
> I'm trying to reduce Botan size. First, I removed the patented stuff and
> ciphers/hashes I doubt I'll need/use. Second, I played with compiler
> switches (minimum size, etc). Now I want to remove the X.509/ASN.1/BER/PEM
> stuff. Any pointers for best strategy to do this?
> 
> Felix.
> 
> _______________________________________________
> botan-devel mailing list
> botan-devel at randombit.net
> http://www.randombit.net/mailman/listinfo/botan-devel