To add to my point, once a few key parties chose Bernstein's crypto, network effects did most of the rest. Adam Langley [1] of Google authored the very first d

To add to my point, once a few key parties chose Bernstein's crypto, network effects did most of the rest. Adam Langley [1] of Google authored the very first draft [2] of ChaCha20 and Poly1305 in TLS in September 2013 and started the feature request in Mozilla NSS that same month [3], while it presumably shipped in Chromium and BoringSSL earlier. A 2014 Google blog post credits the Poly1305 implementation to Andrew Moon (floodyberry) [4], and the ChaCha20 implementation to Ted Krovetz of CSU Sacramento [5][6]. Meanwhile, a very similar Chacha20+Poly1305 was added [7] to OpenSSH in November 2013 by Damien Miller (djm) [8], who is a longtime OpenSSH contributor but since 2006 has worked for Google. Google likely did this to find a fast cipher that works on hardware that lacks AES acceleration (e.g. phones), but once they did it everyone else followed. This was of course during that awkward time in mid-2013 when no browser supported TLSv1.2 yet, and all TLSv1.1 ciphersuites were insecure [9]. This also coincided with Brian Smith of Mozilla blogging about cutting down on the number of different ciphersuites browsers are to use in the future [10][11], which began a big purge in ciphersuites [12]. [1] https://www.imperialviolet.org/ https://www.imperialviolet.org/ [2] https://tools.ietf.org/html/draft-agl-tls-chacha20poly1305-00 https://tools.ietf.org/html/draft-agl-tls-chacha20poly1305-0... [3] https://bugzilla.mozilla.org/show_bug.cgi?id=917571 https://bugzilla.mozilla.org/show_bug.cgi?id=917571 [4] https://github.com/floodyberry?tab=repositories&q=poly https://github.com/floodyberry?tab=repositories&q=poly [5] http://krovetz.net/csus/ http://krovetz.net/csus/ [6] https://github.com/coruus/chacha/tree/master/ext/supercop/krovetz https://github.com/coruus/chacha/tree/master/ext/supercop/kr... [7] http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/cipher-chachapoly.c http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/cip... [8] http://www.mindrot.org/~djm/ http://www.mindrot.org/~djm/ [9] https://news.ycombinator.com/item?id=12393830 https://news.ycombinator.com/item?id=12393830 [10] https://news.ycombinator.com/item?id=12393683 https://news.ycombinator.com/item?id=12393683 [11] https://briansmith.org/browser-ciphersuites-01 https://briansmith.org/browser-ciphersuites-01 [12] https://bugzilla.mozilla.org/show_bug.cgi?id=1036765 https://bugzilla.mozilla.org/show_bug.cgi?id=1036765