97 lines
1.8 KiB
Go
97 lines
1.8 KiB
Go
package main
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import (
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"bytes"
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"encoding/pem"
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"syscall"
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"forge.cadoles.com/wpetit/go-http-peering/crypto"
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"golang.org/x/crypto/ssh/terminal"
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)
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func getPassphrase() ([]byte, error) {
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passphrase, exists := os.LookupEnv("KEY_PASSPHRASE")
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if exists {
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return []byte(passphrase), nil
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}
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return askPassphrase()
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}
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func askPassphrase() ([]byte, error) {
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fmt.Print("Passphrase: ")
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passphrase, err := terminal.ReadPassword(syscall.Stdin)
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if err != nil {
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return nil, err
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}
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fmt.Println()
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fmt.Print("Confirm passphrase: ")
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passphraseConfirmation, err := terminal.ReadPassword(syscall.Stdin)
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if err != nil {
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return nil, err
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}
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fmt.Println()
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if !bytes.Equal(passphrase, passphraseConfirmation) {
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return nil, errors.New("passphrases does not match")
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}
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return passphrase, nil
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}
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func privateKeyToEncryptedPEM(key *rsa.PrivateKey, passphrase []byte) ([]byte, error) {
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if passphrase == nil {
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return nil, errors.New("passphrase cannot be empty")
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}
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// Convert it to pem
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block := &pem.Block{
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Type: "RSA PRIVATE KEY",
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Bytes: x509.MarshalPKCS1PrivateKey(key),
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}
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block, err := x509.EncryptPEMBlock(rand.Reader, block.Type, block.Bytes, passphrase, x509.PEMCipherAES256)
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if err != nil {
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return nil, err
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}
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return pem.EncodeToMemory(block), nil
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}
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func loadPrivateKey() (*rsa.PrivateKey, error) {
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if keyFile == "" {
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return nil, errors.New("you must specify a key file to load")
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}
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pem, err := ioutil.ReadFile(keyFile)
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if err != nil {
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return nil, err
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}
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passphrase, err := getPassphrase()
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if err != nil {
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return nil, err
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}
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privateKey, err := crypto.DecodePEMEncryptedPrivateKey(pem, passphrase)
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if err != nil {
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return nil, err
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}
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return privateKey, nil
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}
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func handleError(err error) {
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if !debug {
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fmt.Println(err)
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} else {
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panic(err)
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}
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os.Exit(1)
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}
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