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GnuPG 2.0.19 + Cryptostick - decryption fails with 4096 bit key

 

 

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mat at spoked

Jun 5, 2012, 9:43 AM

Post #1 of 4 (369 views)
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GnuPG 2.0.19 + Cryptostick - decryption fails with 4096 bit key

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Hello,

I have recently generated subkeys to use with a GPF Cryptostick. I
decided to make full use of the ability to use 4096 bit keys with
recent versions of GnuPG ( > 2.0.18 I think). Everything is working
except when trying to decrypt a file or message encrypted to my
encryption subkey.

On this topic, I have found the following thread on the GPF forums,
which lead me back to this list.

https://www.privacyfoundation.de/forum/viewtopic.php?f=13&t=1145


The error output is the same as in the above thread, with no more
detail than:

gpg: public key decryption failed: General error
gpg: decryption failed: No secret key


Somehow, gpg2 is not able to read the key from the card. Is this a
known bug? I have not found anyone else documenting this.


Thanks,
Mat

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wk at gnupg

Jun 5, 2012, 11:48 AM

Post #2 of 4 (345 views)
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Re: GnuPG 2.0.19 + Cryptostick - decryption fails with 4096 bit key [In reply to]

On Tue, 5 Jun 2012 18:43, mat [at] spoked said:

> Somehow, gpg2 is not able to read the key from the card. Is this a
> known bug? I have not found anyone else documenting this.

I don't have a crypto stick, thus I can't test it.


Shalom-Salam,

Werner

--
Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz.


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richard at r-selected

Jun 5, 2012, 2:46 PM

Post #3 of 4 (344 views)
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Re: GnuPG 2.0.19 + Cryptostick - decryption fails with 4096 bit key [In reply to]

On Tue, Jun 5, 2012 at 6:43 PM, Mathieu Jolicoeur <mat [at] spoked> wrote:
> On this topic, I have found the following thread on the GPF forums,
> which lead me back to this list.
>
> https://www.privacyfoundation.de/forum/viewtopic.php?f=13&t=1145

This could be pretty much the same issue which Edmond and Kevin are
experiencing:

http://lists.gnupg.org/pipermail/gnupg-users/2012-April/044195.html
http://lists.gnupg.org/pipermail/gnupg-users/2012-May/044335.html

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mat at spoked

Jun 5, 2012, 3:32 PM

Post #4 of 4 (348 views)
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Re: GnuPG 2.0.19 + Cryptostick - decryption fails with 4096 bit key [In reply to]

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Hash: SHA256

On 06/05/2012 05:46 PM, Richard wrote:
>
> This could be pretty much the same issue which Edmond and Kevin
> are experiencing:
>
> http://lists.gnupg.org/pipermail/gnupg-users/2012-April/044195.html
>
>
http://lists.gnupg.org/pipermail/gnupg-users/2012-May/044335.html

Thanks for the references. After reading them, I come to the same
conclusion. I enabled the debug log for scdaemon and can attest to the
same behavior. There is no interaction with the card in the log when
trying to decrypt.

Mat
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