Mailing-List: contact derby-dev-help@db.apache.org; run by ezmlm
Precedence: bulk
Reply-To: <derby-dev@db.apache.org>
Message-ID: <25389526.1153861936026.JavaMail.jira@brutus>
Date: Tue, 25 Jul 2006 14:12:16 -0700 (PDT)
From: "Suresh Thalamati (JIRA)" <derby-dev@db.apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Updated: (DERBY-1156) allow the encrypting of an existing
 unencrypted db and allow the re-encrypting of an existing encrypted db
In-Reply-To: <906547337.1143541201736.JavaMail.jira@ajax>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit

     [ http://issues.apache.org/jira/browse/DERBY-1156?page=all ]

Suresh Thalamati updated DERBY-1156:
------------------------------------

    Attachment: reencrypt_5.diff

DERBY -1156 (partial) re-encryption of the database.

This patch adds a new test that tests recovery of the database 
if the engine crashes just before committing the re-encryption
with a new password phrase. Crash is simulated using the debug flags. 


svn stat:
A      java\testing\org\apache\derbyTesting\functionTests\tests\store\ReEncryptCrashRecovery.java
A      java\testing\org\apache\derbyTesting\functionTests\master\ReEncryptCrashRecovery.out
M      java\testing\org\apache\derbyTesting\functionTests\suites\encryptionAll.runall

> allow the encrypting of an existing unencrypted db and allow the re-encrypting of an existing encrypted db
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1156
>                 URL: http://issues.apache.org/jira/browse/DERBY-1156
>             Project: Derby
>          Issue Type: Improvement
>          Components: Store
>    Affects Versions: 10.1.2.3
>            Reporter: Mike Matrigali
>         Assigned To: Suresh Thalamati
>            Priority: Minor
>             Fix For: 10.2.0.0
>
>         Attachments: encryptspec.html, reencrypt_1.diff, reencrypt_2.diff, reencrypt_3.diff, reencrypt_4.diff, reencrypt_5.diff
>
>
> encrypted database to be re-encrypted with a new password.
> Here are some ideas for an initial implementation.
> The easiest way to do this is to make sure we have exclusive access to the
> data and that no log is required in the new copy of the db.  I want to avoid
> the log as it also is encrypted.  Here is my VERY high level plan:
> 1) Force exclusive access by putting all the work in the low level store,
>    offline boot method.  We will do redo recovery as usual, but at the end
>    there will be an entry point to do the copy/encrypt operation.
> copy/encrypt process:
> 0) The request to encrypt/re-encrypt the db will be handled with a new set
>    of url flags passed into store at boot time.  The new flags will provide
>    the same inputs as the current encrypt flags.  So at high level the
>    request will be "connect db old_encrypt_url_flags; new_encrypt_url_flags".
>    TODO - provide exact new flag syntax.
> 1) Open a transaction do all logged work to do the encryption.  All logging
>    will be done with existing encryption.
> 2) Copy and encrypt every db file in the database.  The target files will
>    be in the data directory.  There will be a new suffix to track the new
>    files, similar to the current process used for handling drop table in
>    a transaction consistent manner without logging the entire table to the log.
>    Entire encrypted destination file is guaranteed synced to disk before
>    transaction commits.  I don't think this part needs to be logged.
>    Files will be read from the cache using existing mechanism and written
>    directly into new encrypted files (new encrypted data does not end up in
>    the cache).
> 3) Switch encrypted files for old files.  Do this under a new log operation
>    so the process can be correctly rolled back if the encrypt db operation
>    transaction fails.  Rollback will do file at a time switches, no reading
>    of encrypted data is necessary.
> 4) log a "change encryption of db" log record, but do not update
>    system.properties with the change.
> 5) commit transaction.
> 6) update system.properties and sync changes.
> 7) TODO - need someway to handle crash between steps 5 and 6.
> 6) checkpoint all data, at this point guaranteed that there is no outstanding
>    transaction, so after checkpoint is done there is no need for the log.
> ISSUES:
> o there probably should be something that catches a request to encrypt to
>   whatever db was already encrypted with.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira