assert checked too early

2026-06-06 20:17:32 +00:00 · 2016-06-09 12:04:49 +02:00
parent 14441e4807
commit 18385d0b35
1 changed files with 2 additions and 1 deletions
@@ -37,11 +37,12 @@ public struct PKCS7: Padding {
    }

    public func remove(data bytes: Array<UInt8>, blockSize:Int?) -> Array<UInt8> {
-        assert(!bytes.isEmpty, "Need bytes to remove padding")
        guard !bytes.isEmpty, let lastByte = bytes.last else {
            return bytes
        }

+        assert(!bytes.isEmpty, "Need bytes to remove padding")
+
        let padding = Int(lastByte) // last byte
        let finalLength = bytes.count - padding