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https://issues.apache.org/jira/browse/HADOOP-14001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15830642#comment-15830642
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Yongjun Zhang commented on HADOOP-14001:
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HI [~ajisakaa] and [~tlipcon],
Per https://docs.oracle.com/javase/7/docs/api/java/security/MessageDigest.html
{code}
public static boolean isEqual(byte[] digesta,
byte[] digestb)
Compares two digests for equality. Does a simple byte compare.
Parameters:
digesta - one of the digests to compare.
digestb - the other digest to compare.
Returns:
true if the digests are equal, false otherwise.
{code}
Seems the orginal code has same behavior as the changed code. The newer code
looks more symbolic though. Would you please comment if there is any other diff?
Thanks.
> Improve delegation token validity checking
> ------------------------------------------
>
> Key: HADOOP-14001
> URL: https://issues.apache.org/jira/browse/HADOOP-14001
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Akira Ajisaka
> Assignee: Akira Ajisaka
> Fix For: 2.8.0, 2.7.4, 3.0.0-alpha2
>
> Attachments: HADOOP-14001.01.patch
>
>
> In AbstractDelegationSecretManager#verifyToken, MessageDigest.isEqual should
> be used instead of Arrays.equals to compare byte arrays.
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