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* [Bug libgcj/23768] New: doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state
@ 2005-09-07 18:34 qianzwang at yahoo dot com
2005-09-07 18:36 ` [Bug classpath/23768] " pinskia at gcc dot gnu dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: qianzwang at yahoo dot com @ 2005-09-07 18:34 UTC (permalink / raw)
To: java-prs
The JCE spec for Cipher.doFinal states:
"Upon finishing, this method resets this cipher object to the state it was in
when previously initialized via a call to init. That is, the object is reset and
available to encrypt or decrypt (depending on the operation mode that was
specified in the call to init) more data."
However, the various doFinal() methods of the Cipher class reset the cipher to
an uninitialized state. Subsequent calls to update() or doFinal() result in an
IllegalStateException.
The Cipher class contains the following in several doFinal methods:
...
if (state != ENCRYPT_MODE && state != DECRYPT_MODE)
{
throw new IllegalStateException("neither encrypting nor decrypting");
}
state = INITIAL_STATE;
...
The state of the cipher should not be set to INITIAL_STATE after doFinal but
remain either in ENCRYPT_MODE or DECRYPT_MODE. All of the doFinal methods are
affected by this bug.
This is my first bug report here, so please let me know if more information is
needed such as an executable example. I'm also not sure (since I didn't see it
in the bug writing guidelines) whether I sould attach a patch for this bug.
The same problem also exists in the latest Classpath codebase.
--
Summary: doFinal() methods in javax.crypto.Cipher incorrectly
resetting cipher state
Product: gcc
Version: 4.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libgcj
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: qianzwang at yahoo dot com
CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23768
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug classpath/23768] doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state
2005-09-07 18:34 [Bug libgcj/23768] New: doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state qianzwang at yahoo dot com
@ 2005-09-07 18:36 ` pinskia at gcc dot gnu dot org
2005-09-07 18:36 ` pinskia at gcc dot gnu dot org
2005-09-08 5:49 ` csm at gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-07 18:36 UTC (permalink / raw)
To: java-prs
--
What |Removed |Added
----------------------------------------------------------------------------
Component|libgcj |classpath
Product|gcc |classpath
Version|4.0.1 |0.18
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23768
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug classpath/23768] doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state
2005-09-07 18:34 [Bug libgcj/23768] New: doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state qianzwang at yahoo dot com
2005-09-07 18:36 ` [Bug classpath/23768] " pinskia at gcc dot gnu dot org
@ 2005-09-07 18:36 ` pinskia at gcc dot gnu dot org
2005-09-08 5:49 ` csm at gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-07 18:36 UTC (permalink / raw)
To: java-prs
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |bug-classpath at gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23768
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug classpath/23768] doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state
2005-09-07 18:34 [Bug libgcj/23768] New: doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state qianzwang at yahoo dot com
2005-09-07 18:36 ` [Bug classpath/23768] " pinskia at gcc dot gnu dot org
2005-09-07 18:36 ` pinskia at gcc dot gnu dot org
@ 2005-09-08 5:49 ` csm at gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: csm at gnu dot org @ 2005-09-08 5:49 UTC (permalink / raw)
To: java-prs
------- Additional Comments From csm at gnu dot org 2005-09-08 05:49 -------
Confirmed. The doFinal methods should leave 'state' as-is, as the reporter suggests. It is up to CipherSpi
subclasses to reset themselves when their 'engineDoFinal' methods are called.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |csm at gnu dot org
|dot org |
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-09-08 05:49:10
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23768
^ permalink raw reply [flat|nested] 4+ messages in thread
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2005-09-07 18:34 [Bug libgcj/23768] New: doFinal() methods in javax.crypto.Cipher incorrectly resetting cipher state qianzwang at yahoo dot com
2005-09-07 18:36 ` [Bug classpath/23768] " pinskia at gcc dot gnu dot org
2005-09-07 18:36 ` pinskia at gcc dot gnu dot org
2005-09-08 5:49 ` csm at gnu dot org
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