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[Bug #835] Incorrect implementation of SHA1PRNG.java
From: |
nobody |
Subject: |
[Bug #835] Incorrect implementation of SHA1PRNG.java |
Date: |
Sat, 25 Jan 2003 19:10:06 -0500 |
=================== BUG #835: LATEST MODIFICATIONS ==================
http://savannah.gnu.org/bugs/?func=detailbug&bug_id=835&group_id=85
Changes by: Brian Jones <address@hidden>
Date: 2003-Jan-25 19:10 (US/Eastern)
What | Removed | Added
---------------------------------------------------------------------------
Status | Accepted | Open
------------------ Additional Follow-up Comments ----------------------------
Putting this back in an "Open" state just so I don't lose track of it.
=================== BUG #835: FULL BUG SNAPSHOT ===================
Submitted by: None Project: classpath
Submitted on: 2002-Jul-09 20:23
Severity: 5 - Major Resolution: None
Assigned to: cbj Status: Open
Platform Version: None
Summary: Incorrect implementation of SHA1PRNG.java
Original Submission: SHA1PRNG.java is implemented incorrectly and produces
completely wrong sequence of pseudo-random numbers.
Follow-up Comments
*******************
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Date: 2003-Jan-25 19:10 By: cbj
Putting this back in an "Open" state just so I don't lose track of it.
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Date: 2003-Jan-25 19:09 By: cbj
I have started looking at your test attachment.
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Date: 2002-Jul-23 11:03 By: None
It's been a couple of weeks already, so I may not remember all the details.
There are two issues. The first one is that if you try to generate <=20 random
numbers, given the same seed, classpath implementation gives completely
different sequence of numbers from that of Sun's code (maybe it generates the
same output disregarding seed value - I do not remember). The second issue is
that if you try to generate >20 random numbers, classpath starts repeating
previously generated 20 values instead of generating new ones.
I will try to find my tests and submit them later.
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Date: 2002-Jul-22 19:15 By: mark
Could you provide more information? What were you expecting? Do you have some
sample code or a test case?
CC list is empty
File Attachments
****************
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Date: 2002-Jul-23 12:05 Name: test.tar.gz Size: 3KB By: None
If you try to run serial.class on Sun/IBM JDK and then on any JVM that uses
classpath, the sequences of random numbers that Cipher outputs will be
completely different
http://savannah.gnu.org/bugs/download.php?group_id=85&bug_id=835&bug_file_id=56
For detailed info, follow this link:
http://savannah.gnu.org/bugs/?func=detailbug&bug_id=835&group_id=85