Imports of package argon2

PathSynopsis
encoding/binaryPackage binary implements simple translation between numbers and byte sequences and encoding and decoding of varints.
golang.org/x/crypto/blake2bPackage blake2b implements the BLAKE2b hash algorithm defined by RFC 7693 and the extendable output function (XOF) BLAKE2Xb.
hashPackage hash provides interfaces for hash functions.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.