CAcert OAuth2 / OpenID Connect IDP

This repository contains an implementation for an identity provider. ORY Hydra is used for the actual OAuth2 / OpenID Connect operations. The implementation in this repository provides the end user UI components that are required by Hydra to allow login and consent.

The code in this repository is licensed under the terms of the Apache License Version 2.0.

Copyright © 2020-2022 Jan Dittberner

Setup

Certificates

You need a set of certificates for the IDP. You can use the Test CA created by the setup_test_ca.sh script from the CAcert developer setup repository like this:

1. create signing requests

   mkdir certs
   cd certs
   openssl req -new -newkey rsa:3072 -nodes \
       -keyout idp.cacert.localhost.key \
       -out idp.cacert.localhost.csr.pem \
       -subj /CN=idp.cacert.localhost \
       -addext subjectAltName=DNS:idp.cacert.localhost,DNS:login.cacert.localhost
   cp *.csr.pem $PATH_TO_DEVSETUP_TESTCA/
   

2. Use the CA to sign the certificates

   pushd $PATH_TO_DEVSETUP_TESTCA/
   openssl ca -config ca.cnf -name class3_ca -extensions server_ext \
       -in idp.cacert.localhost.csr.pem \
       -out idp.cacert.localhost.crt.pem -days 365
   popd
   cp $PATH_TO_DEVSETUP_TESTCA/idp.cacert.localhost.crt.pem .
   

3. Copy CA certificate for client certificates

   openssl x509 -in $PATH_TO_DEVSETUP_TESTCA/class3/ca.crt.pem \
       -out client_ca.pem
   

Configure IDP

The Identity Provider application (IDP) requires a strong random key for its CSRF cookie. You can generate such a key using the following openssl command:

openssl rand -base64 32

Use this value to create idp.toml:

[security]
csrf.key = "<32 bytes of base64 encoded data>"

Start

Now you can start the IDP:

make
go run cmd/idp.go

Translations

This application uses go-i18n for internationalization (i18n) support.

The translation workflow needs the go18n binary which can be installed via

go install github.com/nicksnyder/go-i18n/v2/goi18n

To extract new messages from the code run

goi18n extract .

Then use

goi18n merge active.*.toml

to create TOML files for translation as translate.<locale>.toml. After translating the messages run

goi18n merge active.*.toml translate.*.toml

to merge the messages back into the active translation files. To add a new language you need to add the language code to the languages configuration option (default is defined in the configmap in cmd/idp.go).