Armor encode input

bridge/call.go

@@ -53,6 +53,8 @@ func Call(name string, payload []byte) ([]byte, error) {
 		output = instance.encryptSymmetricBytes(payload)
 	case "generate":
 		output = instance.generate(payload)
+	case "armorEncode":
+		output = instance.armorEncode(payload)
 	default:
 		return nil, fmt.Errorf("not implemented: %s", name)
 	}
@@ -374,6 +376,17 @@ func (m instance) parseCompression(input model.Compression) string {
 	}
 }
 
+func (m instance) armorEncode(payload []byte) []byte {
+	response := flatbuffers.NewBuilder(0)
+	request := model.GetRootAsArmorEncodeRequest(payload, 0)
+
+	output, err := m.instance.ArmorEncode(request.PacketBytes())
+	if err != nil {
+		return m._stringResponse(response, output, err)
+	}
+	return m._stringResponse(response, output, nil)
+}
+
 func (m instance) _keyPairResponse(response *flatbuffers.Builder, output *openpgp.KeyPair, err error) []byte {
 	if err != nil {
 		outputOffset := response.CreateString(err.Error())

flatbuffers/bridge.fbs

@@ -153,6 +153,10 @@ table GenerateRequest {
   options:model.Options;
 }
 
+table ArmorEncodeRequest {
+  packet:[ubyte];
+}
+
 /// KeyOptions collects a number of parameters along with sensible defaults.
 table KeyOptions {
   /// Hash is the default hash function to be used.
@@ -255,4 +259,4 @@ table PrivateKeyMetadata {
   key_id_numeric:string;
   is_sub_key:bool;
   encrypted:bool;
-}
+}

openpgp/armor.go

@@ -0,0 +1,23 @@
+package openpgp
+
+import (
+	"bytes"
+	"github.com/ProtonMail/go-crypto/openpgp/armor"
+)
+
+func (o FastOpenPGP) ArmorEncode(packet []byte) (string, error) {
+	buf := bytes.NewBuffer(nil)
+	writer, err := armor.Encode(buf, messageType, headers)
+	if err != nil {
+		return "", err
+	}
+	_, err = writer.Write(packet)
+	if err != nil {
+		return "", err
+	}
+	err = writer.Close()
+	if err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}

openpgp/armor_test.go

@@ -0,0 +1,27 @@
+package openpgp
+
+import (
+	"testing"
+)
+
+var encoded = `-----BEGIN PGP MESSAGE-----
+Version: openpgp-mobile
+
+cmFuZG9tIHN0cmluZw==
+=zR7q
+-----END PGP MESSAGE-----`
+
+func TestFastOpenPGP_ArmorEncode(t *testing.T) {
+
+	openPGP := NewFastOpenPGP()
+	output, err := openPGP.ArmorEncode([]byte("random string"))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log("output:", output)
+
+	if string(output) != string(encoded) {
+		t.Fatal("not same input")
+	}
+}