Hello, Actually this comparison is pretty old, but was unknown to me until today. It compares the various cryptographic libraries on cipher performance. https://idlebox.net/2008/0714-cryptography-speedtest-comparison/

Since then many things might have changed, but I also noticed the AES performance difference on a 32-bit processor. However, in RSA and DH nettle/gmp seem to offer much better performance than openssl [0].

regards, Nikos

[0]. http://nikmav.blogspot.com/2012/04/in-some-embedded-systems-space-may.html https://bitbucket.org/yarosla/nxweb/wiki/Benchmarks