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8295919: java.security.MessageDigest.isEqual does not adhere to @implNote

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Reviewed-by: mullan
This commit is contained in:
Kevin Driver 2023-09-29 18:47:47 +00:00
parent 5a6aa569aa
commit 47569a256c
1 changed files with 7 additions and 5 deletions
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12
src/java.base/share/classes/java/security/MessageDigest.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2023, 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
@ -457,10 +457,12 @@ public abstract class MessageDigest extends MessageDigestSpi {
* the same length and all bytes at corresponding positions are equal.
*
* @implNote
* All bytes in {@code digesta} are examined to determine equality.
* The calculation time depends only on the length of {@code digesta}.
* It does not depend on the length of {@code digestb} or the contents
* of {@code digesta} and {@code digestb}.
* All bytes in {@code digesta} are examined to determine equality, unless
* {@code digestb} is {@code null} or has a length of zero bytes. If
* {@code digestb} is not {@code null} and does not have a length of zero
* bytes, then the calculation time depends only on the length of
* {@code digesta}. It does not depend on the length of {@code digestb} or
* the contents of {@code digesta} and {@code digestb}.
*
* @param digesta one of the digests to compare.
*