On Monday, November 20, 2017 at 8:46:19 AM UTC-5, Jeffrey Walton wrote: > > Hi Everyone, > > We added SPECK64 and SPECK128. They are the lightweight block ciphers > designed by NSA employees. Also see https://iadgov.github.io/simon-speck/. > > We tracked the addition though > https://github.com/weidai11/cryptopp/issues/538. The commit of interest > is https://github.com/weidai11/cryptopp/commit/b9fc470bc78f. >
SPECK-128 got an upgrade. It now uses SSSE3 when available. Throughput increased from about 7.3 cpb to about 3.5 cpb. The Simon and Speck team have SPECK-128 running around 2.6 cpb, so we have some room for improvement. I think the 2.6 cpb measurement is from an machine with AVX or AVX2. We probably won't push into AVX (at least for the time being). The commits of interest are https://github.com/weidai11/cryptopp/commit/39697d92bfb4 and https://github.com/weidai11/cryptopp/commit/e7fee716d68a. The e7fee716d68a commit is the interesting one because it adds speck-simd.cpp. Jeff -- -- You received this message because you are subscribed to the "Crypto++ Users" Google Group. To unsubscribe, send an email to cryptopp-users-unsubscr...@googlegroups.com. More information about Crypto++ and this group is available at http://www.cryptopp.com. --- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to cryptopp-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
