Hi,

Not sure if you are aware of this entry regarding the big number operation:
http://www.securityfocus.com/archive/1/530120/30/30/threaded


I tested  a few of them on my Slackware 64 14.1 (openssl 1.0.1e),

bn_ulong and bn_mod_add  got  Floating point exception
bn_shift got Segmentation fault

bn_bn2hex got "-0"
bn_exp_dos and bn_gcd_dos took a long time and I did not wait for the result

bn_add_word just run and return.


I encounter Floating point exception in BN_div at the call to bn_div_words() 
when using it for a SSL server. Not sure if it is related.

--
qun-ying
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