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https://issues.apache.org/jira/browse/JCLOUDS-196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753801#comment-13753801
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Andrew Gaul commented on JCLOUDS-196:
-------------------------------------

I propose that by default jclouds use temp_url_sig for all signing methods and 
provide a default value for the non-timeout variants.  When users set some 
SwiftConstants.USE_TEMP_URL_SIG property to false, jclouds uses the legacy 
mechanism or throws UnsupportedOperationException for the signing methods it 
cannot support, e.g., the timeout variant.

Alternatively, we could just use temp_url_sig exclusively and see if any users 
report a need for the legacy mechanism.
                
> Swift signGetBlob and signPutBlob implementations differ between two- and 
> three-argument calls
> ----------------------------------------------------------------------------------------------
>
>                 Key: JCLOUDS-196
>                 URL: https://issues.apache.org/jira/browse/JCLOUDS-196
>             Project: jclouds
>          Issue Type: Bug
>          Components: jclouds-blobstore
>    Affects Versions: 1.6.1
>            Reporter: Andrew Gaul
>
> The two-argument Swift signGetBlob and signPutBlob methods use the legacy 
> shared secret X-Auth-Token to authenticate client requests while the 
> three-argument methods use the more secure temp_url_sig mechanism.  We should 
> default both calls to the secure mechanism and provide a property to override 
> for older Swift installations.

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