Elixir implementation of the Blake2 hashing algorithm

Blake2 is a modern cryptographic hash function that is fast, but at least as secure as the latest standard SHA-3.

Blake2 comes in two flavors:

• Blake2b is optimized for 64-bit platforms
  • produces digests of any size between 1 and 64 bytes
• Blake2s is optimized for 8- to 32-bit platforms
  • produces digests of any size between 1 and 32 bytes

There are also the 4-way parallel Blask2bp and 8-way parallel Blake2sp versions.

Standard, keyed, salted and personalized hashing are now supported for all four versions.

Tree hashing and b2sum are not yet supported.