8158517: Minor optimizations to ISO10126PADDING
Reviewed-by: mullan
Contributed-by: adam.petcher@oracle.com, ecki@zusammenkunft.net
--- a/jdk/src/java.base/share/classes/com/sun/crypto/provider/ISO10126Padding.java Wed Dec 07 09:32:32 2016 +0000
+++ b/jdk/src/java.base/share/classes/com/sun/crypto/provider/ISO10126Padding.java Wed Dec 07 10:55:13 2016 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -68,10 +68,10 @@
}
byte paddingOctet = (byte) (len & 0xff);
- byte[] padding = new byte[len];
+ byte[] padding = new byte[len - 1];
SunJCE.getRandom().nextBytes(padding);
- padding[len-1] = paddingOctet;
- System.arraycopy(padding, 0, in, off, len);
+ System.arraycopy(padding, 0, in, off, len - 1);
+ in[off + len - 1] = paddingOctet;
return;
}
@@ -101,7 +101,7 @@
return -1;
}
- int start = off + len - ((int)lastByte & 0x0ff);
+ int start = off + len - padValue;
if (start < off) {
return -1;
}