Argon2 is a memory-hard password hashing function and was selected as the winner of the Password Hashing Competition. Argon2 can be used to derive high-entropy secret keys from low-entropy passwords and is specified at https://github.com/P-H-C/phc-winner-argon2/blob/master/argon2-specs.pdf

This Argon2 implementation was submitted to the golang x/crypto repo. I recommend to use the official x/crypto/argon2 package if possible. This repository also exports Argon2d and Argon2id. It is recommended to use Argon2id as described in the RFC draft.

Install in your GOPATH: go get -u github.com/aead/argon2