libb2: libb2 (C library providing BLAKE2b, BLAKE2s, BLAKE2bp, and BLAKE2sp) libb2: libb2: Libb2 is the C library of the cryptographic hash function BLAKE2, an libb2: improved version of of the SHA-3 finalist BLAKE. Like SHA-3, BLAKE2 libb2: offers the highest security, yet is fast as MD5 on 64-bit platforms libb2: and requires less RAM than SHA-2 or SHA-3 on low-end systems. libb2: libb2: The core algorithm of BLAKE2 is derived from ChaCha, a stream cipher libb2: designed by Daniel J. Bernstein that has been proposed as a standard libb2: cipher for TLS. libb2: