dinheiro

ref: master

keys/keys.go


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package keys

import (
	"log"
	"time"

	"github.com/fernet/fernet-go"
	"github.com/vaughan0/go-ini"
)

var (
	fernetKey *fernet.Key
)

func Prepare(config ini.File) {
	var (
		err error
	)

	base64key, ok := config.Get("keys", "fernet")

	if !ok {
		log.Fatal("Fernet key was not setted. Generate one using dinheiro keys")
	}

	fernetKey, err = fernet.DecodeKey(base64key)
	if err != nil {
		log.Fatalf("There was some error when decoding the fernet key %v", err)
	}
}

func Encrypt(payload []byte) []byte {
	msg, err := fernet.EncryptAndSign(payload, fernetKey)

	if err != nil {
		log.Fatalf("Error encrypting payload: %v", err)
	}

	return msg
}

// TODO: Add a method to decrypt taking expiration time in account, which will
// be useful for dealing with cookies
func DecryptWithoutExpiration(payload []byte) []byte {
	return fernet.VerifyAndDecrypt(payload,
		time.Duration(0), []*fernet.Key{fernetKey})
}