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From Aki Yoshida <>
Subject Re: encrypting tmp files generated by CachedOutputStream?
Date Thu, 18 Oct 2012 13:05:31 GMT
Hi Freeman,
yes. This should be an option and disabled by default.
I am thinking about introducing a system property to set the cipher
transformation name to enable  this option.

regards, aki

2012/10/18 Freeman Fang <>:
> Hi Aki,
> Basically I'm +1 for this good idea. Just a little bit concern about the performance
> Could we add a flag to enable this encryption behavior? By default the value is false,
so keep same behavior as is, and users can explicitly enable it if they need a higher secure
> My 2 cents.
> Best Regards
> Freeman
> -------------
> Freeman(Yue) Fang
> Red Hat, Inc.
> FuseSource is now part of Red Hat
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> Twitter: freemanfang
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> On 2012-10-18, at 下午8:31, Aki Yoshida wrote:
>> Hi,
>> There is a concern that these temporary files are written out to the
>> file system without any protection. And I was wondering if we can add
>> an option to enable encryption for the stream output and keep the key
>> in the COS instance so that only that COS instance can later read the
>> data from the file system.
>> Is there any security concern to this approach? If none, I will go
>> ahead and add this option.
>> thanks.
>> regards, aki

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