Ciphers: ChaCha20, XChaCha20, XChaCha12 (SSSE3/AVX2/AVX-512VL)

modulename: chacha-x86_64.ko

and/or

chacha20-x86_64.ko

configname: CONFIG_CRYPTO_CHACHA20_X86_64

Linux Kernel Configuration
└─>Accelerated Cryptographic Algorithms for CPU (x86)
└─>Ciphers: ChaCha20, XChaCha20, XChaCha12 (SSSE3/AVX2/AVX-512VL)
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Length-preserving ciphers: ChaCha20, XChaCha20, and XChaCha12
stream cipher algorithms

Architecture: x86_64 using:
- SSSE3 (Supplemental SSE3)
- AVX2 (Advanced Vector Extensions 2)
- AVX-512VL (Advanced Vector Extensions-512VL)

source code: