On Wed, Mar 18, 2020 at 11:03:42AM +0000, Dat Le wrote: > Hi, > > I'm not sure if this is the right place to ask, I'm sorry if not. I just see > this email as the maintainer contact of official openssl package on Ubuntu > 18.04. > > My issue: > I am investigate openssl to apply it to encrypt some large files. I want to > be able to compile openssl from source (https://github.com/openssl/openssl), > since I need to add some debug log and some time-measurement code to observe > the performance. > I start to build compile with the original source at tag "OpenSSL_1_1_1" > follow this instruction: > https://www.howtoforge.com/tutorial/how-to-install-openssl-from-source-on-linux/ > > But when I run some encrypt demo with the new-build openssl, the time > consumes to encrypt is somehow bigger than the one with the official openssl > package installed by "apt install openssl". > I guess that the options of "./config" command are different between 2 > openssl builds.
The config options we use in Debian are: no-idea no-mdc2 no-rc5 no-zlib no-ssl3 enable-unit-test no-ssl3-method enable-rfc3779 enable-cms enable-ec_nistp_64_gcc_128 I assume they are the same in Ubuntu. Only the last one (enable-ec_nistp_64_gcc_128) can have a performance difference, but not to encrypt something, it's related to NIST EC curves. The other difference is that we use -O2 instead of -O3. I doubt it will have an effect. But if you want to try it, just add -O2 to the options. There really isn't any reason why encryption should not have the same performance. I suggest that you verify which shared library you use using ldd, that you pick up the correct version. Kurt -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
