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From "Robert Burrell Donkin (JIRA)" <j...@apache.org>
Subject [jira] Commented: (INFRA-2042) EOL SHA1, DSA
Date Thu, 07 May 2009 12:44:30 GMT

    [ https://issues.apache.org/jira/browse/INFRA-2042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12706826#action_12706826
] 

Robert Burrell Donkin commented on INFRA-2042:
----------------------------------------------

Just in case a credible attack turns up in the next few weeks, I've run baseline hashes on
archive.apache.org. The results will be attached.

Scan (https://svn.apache.org/repos/asf/incubator/rat/scan/trunk) can perform diffs to discover
any changes if required in future.  However, it would be also be worthwhile talking to Henk
about moving his data base to SHA512. 

> EOL SHA1, DSA 
> --------------
>
>                 Key: INFRA-2042
>                 URL: https://issues.apache.org/jira/browse/INFRA-2042
>             Project: Infrastructure
>          Issue Type: Task
>      Security Level: public(Regular issues) 
>            Reporter: Robert Burrell Donkin
>         Attachments: activemq-rat-scan-data-2009-05-06.html, ant-rat-scan-data-2009-05-06.html,
apr-rat-scan-data-2009-05-06.html, archiva-rat-scan-data-2009-05-06.html, avalon-rat-scan-data-2009-05-06.html,
beehive-rat-scan-data-2009-05-06.html
>
>
> [PLEASE LEAVE OPEN FOR LONG TERM TRACKING]
> NIST advises [1] SHA1 has been scheduled for EOL in 2010. Recent research[2] has revealed
new vulnerabilities in SHA1.  
> DSA requires a 160bit hash with SHA1 the most common choice. DSA has a 1024bit key length.
This is considered too short[4] with 4096 bits being better but 8192 preferrable. Most digital
signatures - including many of those which secure the WOT[3] and Apache releases- use SHA1
and SDA. 
> Debian are preparing to start transitioning away from DSA and SHA1[5]. Apache should
think about how to do the same.
> [1] See http://csrc.nist.gov/publications/nistpubs/800-57/SP800-57-Part1.pdf
> [2] See http://eurocrypt2009rump.cr.yp.to/837a0a8086fa6ca714249409ddfae43d.pdf
> [3] Web Of Trust
> [4] Applied Cryptography, Long Range Factor Predications
> [5] http://www.debian-administration.org/users/dkg/weblog/48

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