Golang : Load DSA public key from file example

Continue from previous tutorial on generating DSA private and public key. For this tutorial, we will learn how to load a DSA public key file and process the information.

 package main

 import (
 "crypto/dsa"
 "encoding/gob"
 "fmt"
 "os"
 )

 func main() {
 //load public key

 pubKeyFile, err := os.Open("DSApublic.key")

 if err != nil {
 fmt.Println(err)
 os.Exit(1)
 }

 decoder := gob.NewDecoder(pubKeyFile)

 var publickey dsa.PublicKey
 err = decoder.Decode(&publickey)

 if err != nil {
 fmt.Println(err)
 os.Exit(1)
 }

 pubKeyFile.Close()
 //fmt.Printf("Public key : \n%x\n", pubKeyFile)

 fmt.Printf("Public key parameter P: %v\n", publickey.Parameters.P)
 fmt.Printf("Public key parameter Q: %v\n", publickey.Parameters.Q)
 fmt.Printf("Public key parameter G: %v\n", publickey.Parameters.G)
 fmt.Printf("Public key Y: %v\n", publickey.Y)

 }

Hope this helps. Happy coding!