ChaCha20

Quick-n-dirty standalone Java implementation of ChaCha20 (256-bit key, 64- or 96-bit nonce). Do NOT use this unless you know what you are doing. Use the JDK library or Bouncy Castle library instead.

References:

• http://cr.yp.to/chacha/chacha-20080128.pdf
• https://tools.ietf.org/html/draft-irtf-cfrg-chacha20-poly1305-01
• https://github.com/quartzjer/chacha20
• https://github.com/jotcmd/chacha20