package commands import ( "encoding/hex" "fmt" "io/ioutil" "os" "github.com/spf13/cobra" "github.com/spf13/viper" "github.com/mitchell/selfpass/credentials/commands" "github.com/mitchell/selfpass/crypto" ) func makeDecrypt(masterpass string, cfg *viper.Viper) *cobra.Command { decryptCmd := &cobra.Command{ Use: "decrypt [file]", Short: "Decrypt a file using your masterpass and secret key", Long: `Decrypt a file using your masterpass and secret key, and replace the old file with the new file.`, Args: cobra.ExactArgs(1), Run: func(cmd *cobra.Command, args []string) { file := args[0] fileout := file if file[len(file)-4:] == ".enc" { fileout = file[:len(file)-4] } contents, err := ioutil.ReadFile(file) check(err) key, err := hex.DecodeString(cfg.GetString(commands.KeyPrivateKey)) check(err) passkey, err := crypto.CombinePasswordAndKey([]byte(masterpass), []byte(key)) check(err) contents, err = crypto.CBCDecrypt(passkey, contents) check(err) check(ioutil.WriteFile(fileout, contents, 0600)) check(os.Remove(file)) fmt.Println("Decrypted file: ", fileout) }, } return decryptCmd }