bugfix check returns of pem.Decode

2015-10-20 12:29:39 +02:00
parent 4b92c72b9a
commit 229ddd54a8
1 changed files with 3 additions and 0 deletions
--- a/dkim.go
+++ b/dkim.go
@@ -106,6 +106,9 @@ func Sign(email *[]byte, options SigOptions) error {
 		return ErrSignPrivateKeyRequired
 	}
 	d, _ := pem.Decode(options.PrivateKey)
+	if d == nil {
+		return ErrCandNotParsePrivateKey
+	}
 	key, err := x509.ParsePKCS1PrivateKey(d.Bytes)
 	if err != nil {
 		return ErrCandNotParsePrivateKey