1Password's Strong Password Generator package offers the underlying engine for flexible specification of generated password requirements and ensuring that the generated passwords it returns follow a uniform distribution.

The clients of this package are expected to manage what is presented to users. This engine offers far greater flexibility than should normally be exposed to users.

Use go get:

go get go.1password.io/spg

1Password's spg is copyright 2018, AgileBits Inc and licensed under version 2.0 of the Apache License Agreement.

This is on Github: https://github.com/1password/spg create issues, forks, etc there.