Encode encrypted dek and ciphertext in a binary

and write to file

1 files changed, 19 insertions, 0 deletions

diff --git a/main.go b/main.go
index e93d2a3..79bd45f 100644
--- a/main.go
+++ b/main.go
@@ -1,10 +1,12 @@
 package main
 
 import (
+	"bytes"
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/rand"
 	"encoding/base64"
+	"encoding/gob"
 	"errors"
 	"fmt"
 	"io"
@@ -21,6 +23,11 @@ type (
 	Ciphertext []byte
 )
 
+type EncryptedDataPayload struct {
+	DEK     WrappedDEK
+	Payload Ciphertext
+}
+
 var (
 	aadWrapDEK  = []byte("wrap:dek:v1")
 	aadDataMsg  = []byte("data:msg:v1")
@@ -56,6 +63,18 @@ func main() {
 	fmt.Println("edek_b64:", base64.StdEncoding.EncodeToString(edek))
 	fmt.Println("ct_b64:  ", base64.StdEncoding.EncodeToString(ct))
 
+	var dataBuffer bytes.Buffer
+	enc := gob.NewEncoder(&dataBuffer)
+
+	err = enc.Encode(EncryptedDataPayload{
+		DEK:     edek,
+		Payload: ct,
+	})
+
+	fmt.Println(dataBuffer)
+
+	os.WriteFile("out.bin", dataBuffer.Bytes(), 0666)
+
 	// Round-trip demo.
 	dek2, err := UnwrapDEK(edek, kek)
 	if err != nil {