* fs/crypt : passphrase recycle without data re-encrypt
@ 2017-02-06 11:00 Anand Jain
2017-02-06 11:16 ` Anand Jain
0 siblings, 1 reply; 4+ messages in thread
From: Anand Jain @ 2017-02-06 11:00 UTC (permalink / raw)
To: linux-fsdevel; +Cc: Theodore Ts'o, Eric Biggers
I am looking for some information on how its been planned to
accommodate the feature such as passphrase recycle without the
data re-encryption in fs/crypto or in e2crypt ? any idea ?
Per fs/crypto and e2crypt (for the current master key derivation
method) it appears to me that its not possible, unless I am
missing something. ?
Thanks, Anand
^ permalink raw reply [flat|nested] 4+ messages in thread
* fs/crypt : passphrase recycle without data re-encrypt
2017-02-06 11:00 fs/crypt : passphrase recycle without data re-encrypt Anand Jain
@ 2017-02-06 11:16 ` Anand Jain
2017-02-06 18:02 ` Eric Biggers
0 siblings, 1 reply; 4+ messages in thread
From: Anand Jain @ 2017-02-06 11:16 UTC (permalink / raw)
To: linux-fsdevel; +Cc: Theodore Ts'o, Eric Biggers
(s/e2crypt/e4crypt, sorry)
---
I am looking for some information on how its been planned to
accommodate the feature such as passphrase recycle without the
data re-encryption in fs/crypto or in e4crypt ? any idea ?
Per fs/crypto and e4crypt (for the current master key derivation
method) it appears to me that its not possible, unless I am
missing something. ?
Thanks, Anand
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: fs/crypt : passphrase recycle without data re-encrypt
2017-02-06 11:16 ` Anand Jain
@ 2017-02-06 18:02 ` Eric Biggers
2017-02-06 22:43 ` Anand Jain
0 siblings, 1 reply; 4+ messages in thread
From: Eric Biggers @ 2017-02-06 18:02 UTC (permalink / raw)
To: Anand Jain; +Cc: linux-fsdevel, Theodore Ts'o, Joe Richey
Hi Anand,
On Mon, Feb 06, 2017 at 07:16:35PM +0800, Anand Jain wrote:
>
>
> (s/e2crypt/e4crypt, sorry)
> ---
>
> I am looking for some information on how its been planned to
> accommodate the feature such as passphrase recycle without the
> data re-encryption in fs/crypto or in e4crypt ? any idea ?
> Per fs/crypto and e4crypt (for the current master key derivation
> method) it appears to me that its not possible, unless I am
> missing something. ?
>
> Thanks, Anand
Indeed, this needs to be implemented by userspace, but e4crypt doesn't support
it yet. I've Cc'ed Joe Richey; he's currently working on a userspace program
called 'fscrypt' that will support this feature. There's also a design document
at https://goo.gl/55cCrI you could take a look at.
Eric
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: fs/crypt : passphrase recycle without data re-encrypt
2017-02-06 18:02 ` Eric Biggers
@ 2017-02-06 22:43 ` Anand Jain
0 siblings, 0 replies; 4+ messages in thread
From: Anand Jain @ 2017-02-06 22:43 UTC (permalink / raw)
To: Eric Biggers, Joe Richey; +Cc: linux-fsdevel, Theodore Ts'o
>> I am looking for some information on how its been planned to
>> accommodate the feature such as passphrase recycle without the
>> data re-encryption in fs/crypto or in e4crypt ? any idea ?
>> Per fs/crypto and e4crypt (for the current master key derivation
>> method) it appears to me that its not possible, unless I am
>> missing something. ?
>
> Indeed, this needs to be implemented by userspace, but e4crypt doesn't support
> it yet. I've Cc'ed Joe Richey; he's currently working on a userspace program
> called 'fscrypt' that will support this feature. There's also a design document
> at https://goo.gl/55cCrI you could take a look at.
Thanks. -Anand
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-02-06 22:39 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2017-02-06 11:00 fs/crypt : passphrase recycle without data re-encrypt Anand Jain
2017-02-06 11:16 ` Anand Jain
2017-02-06 18:02 ` Eric Biggers
2017-02-06 22:43 ` Anand Jain
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