Internal Program Version: libxcrypt  4.4.15

libxcrypt is a modern library for one-way hashing of passwords.  It
supports DES, MD5, SHA-2-256, SHA-2-512, and bcrypt-based password
hashes, and provides the traditional Unix 'crypt' and 'crypt_r'
interfaces, as well as a set of extended interfaces pioneered by
Openwall Linux, 'crypt_rn', 'crypt_ra', 'crypt_gensalt',
'crypt_gensalt_rn', and 'crypt_gensalt_ra'.

https://github.com/besser82/libxcrypt