[dm-crypt] OPENSSL / PKCS#12/10

[dm-crypt] OPENSSL / PKCS#12/10

[François Chenais]

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Hello,

Actually, dm-crypt uses stdin and file for password input.

Is there any plan to add the option of using external
gpg/RSA/pkcs#12/pkcs#10 files ?

The idea is to use an crypted file stored on an external device (USB KEY,
token...)

Thanks

   François

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Re: [dm-crypt] OPENSSL / PKCS#12/10

[Arno Wagner]

On Sun, Jan 10, 2010 at 10:22:28PM +0100, Fran?ois Chenais wrote:
> Hello,
> 
> Actually, dm-crypt uses stdin and file for password input.
> 
> Is there any plan to add the option of using external
> gpg/RSA/pkcs#12/pkcs#10 files ?
> 
> The idea is to use an crypted file stored on an external device (USB KEY,
> token...)

You can already do that by using a named pipe as file (or stdin)
and then having a preprocessor that decrypts the encrupted key file
to this pipe. This is actually the preferred way, as it keeps the 
complexity of cryptsetup low.

Arno
-- 
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name 
GnuPG:  ID: 1E25338F  FP: 0C30 5782 9D93 F785 E79C  0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans

If it's in the news, don't worry about it.  The very definition of 
"news" is "something that hardly ever happens." -- Bruce Schneier 

Re: [dm-crypt] OPENSSL / PKCS#12/10

[François Chenais]

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2010/1/11 Arno Wagner <arno@wagner.name>

> On Sun, Jan 10, 2010 at 10:22:28PM +0100, Fran?ois Chenais wrote:
> > Hello,
> >
> > Actually, dm-crypt uses stdin and file for password input.
> >
> > Is there any plan to add the option of using external
> > gpg/RSA/pkcs#12/pkcs#10 files ?
> >
> > The idea is to use an crypted file stored on an external device (USB KEY,
> > token...)
>
> You can already do that by using a named pipe as file (or stdin)
> and then having a preprocessor that decrypts the encrupted key file
> to this pipe. This is actually the preferred way, as it keeps the
> complexity of cryptsetup low.
>
>
Something like this ?

     openssl pkcs12 -in file.p12 -nodes -nocerts | cryptsetup ...

  François















> Arno
> --
> Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email:
> arno@wagner.name
> GnuPG:  ID: 1E25338F  FP: 0C30 5782 9D93 F785 E79C  0296 797F 6B50 1E25
> 338F
> ----
> Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
>
> If it's in the news, don't worry about it.  The very definition of
> "news" is "something that hardly ever happens." -- Bruce Schneier
> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt
>

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Re: [dm-crypt] OPENSSL / PKCS#12/10

[Arno Wagner]

On Mon, Jan 11, 2010 at 08:13:40PM +0100, Fran?ois Chenais wrote:
> 2010/1/11 Arno Wagner <arno@wagner.name>
> 
> > On Sun, Jan 10, 2010 at 10:22:28PM +0100, Fran?ois Chenais wrote:
> > > Hello,
> > >
> > > Actually, dm-crypt uses stdin and file for password input.
> > >
> > > Is there any plan to add the option of using external
> > > gpg/RSA/pkcs#12/pkcs#10 files ?
> > >
> > > The idea is to use an crypted file stored on an external device (USB KEY,
> > > token...)
> >
> > You can already do that by using a named pipe as file (or stdin)
> > and then having a preprocessor that decrypts the encrupted key file
> > to this pipe. This is actually the preferred way, as it keeps the
> > complexity of cryptsetup low.
> >
> >
> Something like this ?
> 
>      openssl pkcs12 -in file.p12 -nodes -nocerts | cryptsetup ...
> 
>   Fran?ois
> 

Essentially, yes.

Arno

-- 
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name 
GnuPG:  ID: 1E25338F  FP: 0C30 5782 9D93 F785 E79C  0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans

If it's in the news, don't worry about it.  The very definition of 
"news" is "something that hardly ever happens." -- Bruce Schneier