add trim leading function

common.go

@@ -1,5 +1,9 @@
 package pm
 
+import (
+	"regexp"
+)
+
 var armorHeader = map[string]string{
 	"Version": "OpenPGP Golang 0.0.1 (" + Version() + ")",
 	"Comment": "https://protonmail.com",
@@ -21,3 +25,8 @@ type Address struct {
 	// address_name : string;
 	keys []Key
 }
+
+func trimNewlines(input string) string {
+	var re = regexp.MustCompile(`(?m)[ \t]*$`)
+	return re.ReplaceAllString(input, "")
+}

message.go

@@ -227,6 +227,9 @@ func (o *OpenPGP) EncryptMessage(plainText string, publicKey string, privateKey
 // passphrase : optional required when you pass the private key and this passphrase must could decrypt the private key
 func (o *OpenPGP) EncryptMessageBinKey(plainText string, publicKey []byte, privateKey string, passphrase string, trim bool) (string, error) {
 
+	if trim {
+		plainText = trimNewlines(plainText)
+	}
 	var outBuf bytes.Buffer
 	w, err := armor.Encode(&outBuf, pgpMessageType, armorHeader)
 	if err != nil {

sign_detached.go

@@ -25,6 +25,10 @@ func (o *OpenPGP) SignTextDetached(plainText string, privateKey string, passphra
 	//sign with 0x01 text
 	var signEntity *openpgp.Entity
 
+	if trim {
+		plainText = trimNewlines(plainText)
+	}
+
 	signerReader := strings.NewReader(privateKey)
 	signerEntries, err := openpgp.ReadArmoredKeyRing(signerReader)
 	if err != nil {
@@ -66,6 +70,10 @@ func (o *OpenPGP) SignTextDetachedBinKey(plainText string, privateKey []byte, pa
 	//sign with 0x01
 	var signEntity *openpgp.Entity
 
+	if trim {
+		plainText = trimNewlines(plainText)
+	}
+
 	signerReader := bytes.NewReader(privateKey)
 	signerEntries, err := openpgp.ReadKeyRing(signerReader)
 	if err != nil {
@@ -196,6 +204,8 @@ func (o *OpenPGP) VerifyTextSignDetached(signature string, plainText string, pub
 
 	signatureReader := strings.NewReader(signature)
 
+	plainText = trimNewlines(plainText)
+
 	origText := bytes.NewReader(bytes.NewBufferString(plainText).Bytes())
 
 	config := &packet.Config{}
@@ -230,7 +240,7 @@ func (o *OpenPGP) VerifyTextSignDetachedBinKey(signature string, plainText strin
 	}
 
 	signatureReader := strings.NewReader(signature)
-
+	plainText = trimNewlines(plainText)
 	origText := bytes.NewReader(bytes.NewBufferString(plainText).Bytes())
 	config := &packet.Config{}
 	if verifyTime > 0 {