# go-gen-cert ## Preamble I've decided to create this project based on [this example](https://github.com/yasushi-saito/grpc-ssl-example/blob/master/go/main.go) but with some improvements, which I would like to give thanks. I had some trouble during TLS communication between both of my gRPC server and client. I've decided to create a tool to generate SSL certificates following a little of this [guide](https://jamielinux.com/docs/openssl-certificate-authority/create-the-intermediate-pair.html). ## TODO: - [ ] Create intermediate authority to sign certificates on behalf CA to add more security. If intermediate is hacked then you can revoke from CA and generate new intermediates keeping CA isolated from beeing hacked. - [ ] Complete tests ## Configuration If you are on `dev` environment, like I've been doing, you must create `.env` file similar as `.env.example` in this repo: ```bash VIPER_CONFIG=your-viper-file-name-without-extension VIPER_CONFIG_TYPE=yaml ENV=dev ``` Then add viper configuration file, yaml for example, in your root directory: ```yaml export_dir: "/home" ca: serial_number: 12152 # serial number subject: organization: "yourdomain.com" common_name: "*.yourdomain.com" key_usage: 1 ext_key_usage: - 1 - 2 duration: "8760h0m0s" #1 year client: serial_number: 12151232 # serial number subject: organization: "yourdomain.com" country: "RM" province: "REML" locality: "" street_address: "" postal_code: "" subject_key_id: - 1 - 2 - 3 - 4 - 6 key_usage: 1 ext_key_usage: - 1 - 2 duration: "8760h0m0s" ``` ## Execution Then you can just run ```bash go run main.go ``` ## goreportcard ```bash make goreportcard ``` output: ```bash ➜ go-cert-gen git:(main) goreportcard-cli -v Grade .......... A+ 100.0% Files ................. 12 Issues ................. 0 gofmt ............... 100% go_vet .............. 100% gocyclo ............. 100% ineffassign ......... 100% license ............. 100% misspell ............ 100% ```