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From "Tim Ellison (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-1120) [class][security] MessageDigest.update(byte[], int, int) incompatible with RI exceptions
Date Wed, 20 Sep 2006 08:05:24 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-1120?page=all ]

Tim Ellison updated HARMONY-1120:
---------------------------------

    Component/s: Classlib
                     (was: Non-bug differences from RI)

> [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: Classlib
>            Reporter: Denis Kishenko
>         Assigned To: Mikhail Loenko
>         Attachments: 1120-MessageDigest.patch, 1120-MessageDigestTest.patch
>
>
> 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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