This repository holds supplementary Go cryptography libraries.
The easiest way to install is to run go get -u github.com/ProtonMail/go-crypto/.... You
can also manually git clone the repository to $GOPATH/src/github.com/ProtonMail/go-crypto.
This module is backwards compatible with x/crypto,
so you can simply replace all imports of golang.org/x/crypto with
github.com/ProtonMail/go-crypto.
A partial list of changes is here: ProtonMail#21 (comment).