Translate PEM key to authorized_key

authorized_key.go

package main

import (
    "fmt"
    "io/ioutil"
    "log"

    "code.google.com/p/go.crypto/ssh"
)

func main() {
    bytes, err := ioutil.ReadFile("/home/andrew/.juju/local-private-key.pem")
    if err != nil {
        log.Fatal(err)
    }
    signer, err := ssh.ParsePrivateKey(bytes)
    if err != nil {
        log.Fatalf("failed to load key: %v", err)
    }
    ak := ssh.MarshalAuthorizedKey(signer.PublicKey())
    fmt.Println(string(ak))
}