An anonymous reader writes: It's been just a couple years since D.J. Bernstein's Chacha20-poly1305 cipher, first arrived on the scene. ChaCha is an encryption cipher intended for fast mobile performance. The real world numbers are in, and they're much better than AES on mobile devices. In tests, Cloudflare is seeing 3x the performance, and Speedify is seeing 2x throughput. Is it time for good old AES to get out of the way?