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From "Denis Kishenko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-1120) [class][security] MessageDigest.update(byte[], int, int) incompatible with RI exceptions
Date Wed, 09 Aug 2006 11:40:13 GMT
[class][security] MessageDigest.update(byte[], int, int) incompatible with RI exceptions
----------------------------------------------------------------------------------------

                 Key: HARMONY-1120
                 URL: http://issues.apache.org/jira/browse/HARMONY-1120
             Project: Harmony
          Issue Type: Bug
          Components: Non-bug differences from RI
            Reporter: Denis Kishenko


Seems like RI doesn't check if offset and len are negative but Harmony does, so we have difference
in behavior.

------------------------------------ Test -------------------------------------------

import java.security.MessageDigest;

public class bug9429 {

    public static void main (String[] args) {
        // len <0; RI does not throw exception
        try {
            System.err.println("1");
            MessageDigest.getInstance("SHA").update(new byte[] {2,2}, 0, -100);
        } catch (Exception e) {
            e.printStackTrace();
        }
        // RI and Harmony throws IllegalArgumentException
        try {
            System.err.println("2");
            MessageDigest.getInstance("SHA").update(new byte[] {2,2}, 0, 5);
        } catch (Exception e) {
            e.printStackTrace();
        }
        // RI throws ArrayIndexOutOfBoundsException; Harmony throws IllegalArgumentException
        // off <0
        try {
            System.err.println("3");
            MessageDigest.getInstance("SHA").update(new byte[] {2,2},  -100, 57);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

------------------------ Output ----------------------------------------

RI
1
2
java.lang.IllegalArgumentException: Input buffer too short
                     	at java.security.MessageDigest.update(MessageDigest.java:267)
                     	at bug9429.main(bug9429.java:16)
3
java.lang.ArrayIndexOutOfBoundsException
                     	at java.lang.System.arraycopy(Ljava.lang.Object;ILjava.lang.Object;II)V(Unknown
Source)
                     	at sun.security.provider.DigestBase.engineUpdate(DigestBase.java:120)
                     	at java.security.MessageDigest$Delegate.engineUpdate(MessageDigest.java:523)
                     	at java.security.MessageDigest.update(MessageDigest.java:269)
                     	at bug9429.main(bug9429.java:24)

Harmony
1
java.lang.IllegalArgumentException: Incorrect offset/len parameters
                     	at java.security.MessageDigest.update(MessageDigest.java:169)
                     	at bug9429.main(bug9429.java:9)
2
java.lang.IllegalArgumentException: Incorrect offset/len parameters
                     	at java.security.MessageDigest.update(MessageDigest.java:169)
                     	at bug9429.main(bug9429.java:16)
3
java.lang.IllegalArgumentException: Incorrect offset/len parameters
                     	at java.security.MessageDigest.update(MessageDigest.java:169)
                     	at bug9429.main(bug9429.java:24)


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