All assember in this directory are just version of the file crypto/bn/bn_mulw.c. Quite a few of these files are just the assember output from gcc since on quite a few machines they are 2 times faster than the system compiler. For the x86, I have hand written assember because of the bad job all compilers seem to do on it. This normally gives a 2 time speed up in the RSA routines. For the DEC alpha, I also hand wrote the assember (except the division which is just the output from the C compiler pasted on the end of the file). On the 2 alpha C compilers I had access to, it was not possible to do 64b x 64b -> 128b calculations (both long and the long long data types were 64 bits). So the hand assember gives access to the 128 bit result and a 2 times speedup :-). The x86xxxx.obj files are the assembled version of x86xxxx.asm files. I had such a hard time finding a macro assember for Microsoft, I decided to include the object file to save others the hassle :-). I have also included uu encoded versions of the .obj incase they get trashed. There are 2 versions of assember for the HP PA-RISC. pa-risc.s is the origional one which works fine. pa-risc2.s is a new version that often generates warnings but if the tests pass, it gives performance that is over 2 times faster than pa-risc.s. Both were generated using gcc :-)