1. chacha20-poly1305@openssh.com: Authenticated encryption mode, May 2016.
http://bxr.su/OpenBSD/usr.bin/ssh/PROTOCOL.chacha20poly1305
2. iOS 10 Security White Paper. Technical report, Apple Inc., March 2017.
https://www.apple.com/business/docs/iOS_Security_Guide.pdf
3. Aumasson, J.-P., Fischer, S., Khazaei, S., Meier, W., Rechberger, C.: New features of Latin dances: analysis of Salsa, ChaCha, and Rumba. Cryptology ePrint Archive, Report 2007/472 (2007).
http://eprint.iacr.org/2007/472
4. Babbage, S., Borghoff, J., Velichkov, V.: The eSTREAM portfolio in 2012.
http://www.ecrypt.eu.org/ecrypt2/documents/D.SYM.10-v1.pdf
5. Beaulieu, R., Shors, D., Smith, J., Treatman-Clark, S., Weeks, B., Wingers, L.: SIMON and SPECK: block ciphers for the Internet of Things. Cryptology ePrint Archive, Report 2015/585 (2015).
http://eprint.iacr.org/2015/585