src/backup/data_blob.rs: add is_encrypted helper

diff --git a/src/backup/data_blob.rs b/src/backup/data_blob.rs
index ef11765efe933ce7e91ce4cea63edf4c63427924..284dc24321eb2cb2d8a281f262f78c024e40ee0a 100644 (file)
--- a/src/backup/data_blob.rs
+++ b/src/backup/data_blob.rs
@@ -271,6 +271,12 @@ impl DataBlob {
         }
     }
 
+    /// Returns if chunk is encrypted
+    pub fn is_encrypted(&self) -> bool {
+        let magic = self.magic();
+        magic == &ENCR_COMPR_BLOB_MAGIC_1_0 || magic == &ENCRYPTED_BLOB_MAGIC_1_0
+    }
+
     /// Verify digest and data length for unencrypted chunks.
     ///
     /// To do that, we need to decompress data first. Please note that