thanks a lot!!
2009/5/6, Michael S. Zick <open...@morethan.org>: > On Wed May 6 2009, Michael S. Zick wrote: >> On Wed May 6 2009, Antonio Ragagnin wrote: >> > Hi, >> > I know the BN_mod_exp is optimized to compute the exponential and >> > modular combinations (it's what i have read!) >> > i'm interested to see the algorytm instead it: >> > becouse i have to calculate a^b^c^d..%mod (or some thing like this), >> > at the time i iterate BN_exp to calculate one single exponent end next >> > i do BN_mod_exp(r,a,exp,mod), unluckly is too slow, >> > >> > so, I would see (please!) the code of BN_mod_exp to modify it for my >> > own use, but i don't find it!! >> > >> > > Try this link: http://everything2.com/?node_id=1812987 > > Mike >> That sounds like a general answer would be to Google "Montgomery >> Multiplication" >> It is also known as "Montgomery reduction" - >> You can also find it hardware engines, such as the VIA cpu's with padlock >> firmware. >> >> As to where to find it in openssl - try just preprocessing the source - >> (gcc -E) >> grep/search/read the result - that is the general way to find macro-ized >> routines. >> >> Mike >> > i've seached it in /usr/lib/openssl/* and in their #include lines >> > but i did not found the file where these two functions are implemented! >> > (there are only a lot of declaration) >> > >> > ps. or any idea to do my expression in one single (or few) line(s) ? :) >> > thanks! >> > Antonio >> > ______________________________________________________________________ >> > OpenSSL Project http://www.openssl.org >> > User Support Mailing List openssl-users@openssl.org >> > Automated List Manager majord...@openssl.org >> > >> > >> >> >> ______________________________________________________________________ >> OpenSSL Project http://www.openssl.org >> User Support Mailing List openssl-users@openssl.org >> Automated List Manager majord...@openssl.org >> >> > > > ______________________________________________________________________ > OpenSSL Project http://www.openssl.org > User Support Mailing List openssl-users@openssl.org > Automated List Manager majord...@openssl.org > ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
