ChaCha library interface

configname: CONFIG_CRYPTO_LIB_CHACHA

Linux Kernel Configuration
└─>Cryptographic API
└─>ChaCha library interface
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Enable the ChaCha library interface. This interface may be fulfilled
by either the generic implementation or an arch-specific one, if one
is available and enabled.