# Packages

cmd

No description provided by the author

examples

No description provided by the author

# README

go-sign

Self verification after sign of golang lib.

Changelog | 中文

Install cmd

go install github.com/xuender/go-sign/cmd/sign@latest

Examples

base

Check the integrity of the execution file to prevent tampering or virus intrusion.

package main

import (
  "fmt"

  "github.com/xuender/go-sign"
)

func main() {
  if err := sign.Check("secret_key"); err != nil {
    panic(err)
  }

  fmt.Println("Hello Word.")
  fmt.Println("This file integrity.")
}

go build -o helloword main.go
sign -s=secret_key helloword

licence

Check license string.

package main

import (
  "fmt"
  "os"

  "github.com/xuender/go-sign"
)

func main() {
  if len(os.Args) < 2 {
    panic("Miss licence.")
  }

  if err := sign.Check(os.Args[1]); err != nil {
    panic("Licence FAILED.")
  }

  fmt.Println("Hello Word.")
  fmt.Println("Licence OK.")
}

go build -o helloword main.go
sign -s=licence_str helloword
# run
./helloword licence_str

env

Check environment variables.

package main

import (
  "fmt"

  "github.com/xuender/go-sign"
)

func main() {
  if err := sign.CheckEnv("SECRET_KEY"); err != nil {
    panic(err)
  }

  fmt.Println("Hello Word.")
  fmt.Println("Run on safe environment.")
}

go build -o helloword main.go
SECRET_KEY=secret_key sign -e=SECRET_KEY helloword
# set env and run
SECRET_KEY=secret_key ./helloword

machine

Only run on the sign machine.

package main

import (
  "fmt"

  "github.com/xuender/go-sign"
)

func main() {
  if err := sign.CheckMachine(); err != nil {
    panic(err)
  }

  fmt.Println("Hello Word.")
  fmt.Println("Run on sign machine.")
}

go build -o helloword main.go
# sign on the final running machine
sign -m helloword

complex

Only run on the sign machine and has env.

package main

import (
  "fmt"
  "os"

  "github.com/xuender/go-sign"
)

func main() {
  mid := sign.GetMachineSecret(os.Getenv("SECRET_KEY"))
  if err := sign.Check(mid); err != nil {
    panic(err)
  }

  fmt.Println("Hello Word.")
  fmt.Println("Run on sign machine and has env.")
}

go build -o helloword main.go
# sign on the final running machine
SECRET_KEY=secret_key sign -m -e=SECRET_KEY helloword
# set env and run
SECRET_KEY=secret_key ./helloword

Safe

To enhance the security level, set the safe parameter at build time.

go build -o helloword \
-ldflags "-X 'github.com/xuender/go-sign.Safe=strong'" \
main.go

PS

Use sign and Check/CheckEnv/CheckMachine must be signed, otherwise it cannot run after build.

License

MIT License