feat: v0.1.2, fix decrypt missing tag panic issue

2024-01-16 00:24:29 +08:00
parent 4e1b96a38d
commit 309972028d
2 changed files with 4 additions and 1 deletions
--- a/src/decryptor.rs
+++ b/src/decryptor.rs
@@ -123,6 +123,9 @@ impl Sm4GcmStreamDecryptor {
        self.ghash.update_padded(&adata_and_message_len);

        let tag = self.calculate_tag();
+        if self.message_buffer.len() < 16 {
+            return Err(format!("Tag missing, message length is: {} < 16 bytes", self.message_buffer.len()));
+        }
        let message_tag = &self.message_buffer[message_buffer_len - 16..];

        if message_tag != tag.as_slice() {