From 4869843d1a5c799093f32ea2cb808bbcc744ad8b Mon Sep 17 00:00:00 2001
From: Cornel Rautenbach <corneliusr>
Date: Thu, 15 Jun 2023 12:52:18 +0200
Subject: [PATCH] Added encryption and decryption of byte arays
---
encryption/encryption.go | 54 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/encryption/encryption.go b/encryption/encryption.go
index 9d06d05..8d6c99a 100644
--- a/encryption/encryption.go
+++ b/encryption/encryption.go
@@ -111,6 +111,60 @@ func DecryptStruct(encryptedStruct string, key string, object any) error {
return nil
}
+func EncryptByteArray(byteArray []byte, key string) (string, error) {
+ if len(key) != 32 {
+ return "", errors.New("key should be 32 bytes")
+ }
+
+ block, err := aes.NewCipher([]byte(key))
+ if err != nil {
+ return "", err
+ }
+
+ aesGcm, err := cipher.NewGCM(block)
+ if err != nil {
+ return "", err
+ }
+
+ nonce := make([]byte, aesGcm.NonceSize())
+ if _, err = io.ReadFull(rand.Reader, nonce); err != nil {
+ return "", err
+ }
+
+ encryptedValue := string(aesGcm.Seal(nonce, nonce, byteArray, nil))
+ return base64.StdEncoding.EncodeToString([]byte(encryptedValue)), nil
+}
+
+func DecryptByteArray(encryptedByteArray []byte, key string, object any) error {
+ if len(key) != 32 {
+ return errors.New("key should be 32 bytes")
+ }
+
+ block, err := aes.NewCipher([]byte(key))
+ if err != nil {
+ return err
+ }
+
+ aesGcm, err := cipher.NewGCM(block)
+ if err != nil {
+ return err
+ }
+
+ nonceSize := aesGcm.NonceSize()
+ if len(encryptedByteArray) < nonceSize {
+ return errors.New("ciphertext too short")
+ }
+
+ nonce, ciphertext := encryptedByteArray[:nonceSize], encryptedByteArray[nonceSize:]
+ value, err := aesGcm.Open(nil, nonce, ciphertext, nil)
+
+ err = json.Unmarshal(value, object)
+ if err != nil {
+ return err
+ }
+ return nil
+}
+
func Encrypt(plaintext string, key string) (string, error) {
if len(key) != 32 {
return "", errors.New("key should be 32 bytes")
--
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