ChaCha20 cipher algorithm (x86_64/SSSE3/AVX2)

modulename: chacha20-x86_64.ko

configname: CONFIG_CRYPTO_CHACHA20_X86_64

Linux Kernel Configuration
└─>Cryptographic API
└─>ChaCha20 cipher algorithm (x86_64/SSSE3/AVX2)
In linux kernel since version 3.10 (release Date: 2013-06-30)  
ChaCha20 cipher algorithm, RFC7539.

ChaCha20 is a 256-bit high-speed stream cipher designed by Daniel J.
Bernstein and further specified in RFC7539 for use in IETF protocols.
This is the x86_64 assembler implementation using SIMD instructions.

See also:
<http://cr.yp.to/chacha/chacha-20080128.pdf>

source code: