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!
See also : Golang : Generate DSA private, public key and PEM files example
By Adam Ng
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