Description: Library for the Argon2-family of hashing functions
Status: Feature complete, but there are still optimisations to explore
Latest release: 1.2.2
License: ISC License (Internet Systems Consortium license)
Written in: C (ISO C11)

libar2 is a C library that implements the family of Argon2 key derivation function, including Argon2d, Argon2i, and Argon2id, as well as Argon2ds which was not part of the submission to the Password Hashing Competition of 2013, which Argon2 won in 2015. As a key derivation function, Argon2 is well-suited for cryptographically hashing (one-way encrypting) passwords.