can not decrypt file suddenly

[jason zhang]

Hi NIIBE

Thank you very much for the help.

Yes, it asked me the passphrase just after "gpg: CAST5 encrypted data"
line, and I gave the passphrase. The passphrase is definitely right since I
used it very 2 or 3 days.


Here is a whole debug session:
----------------------------------------------------
gpg  -v --debug-all --no-use-agent j.gpg
gpg: NOTE: no default option file `/home/jason/.gnupg/gpg.conf'
gpg: DBG: fd_cache_open (j.gpg) not cached
gpg: DBG: iobuf-1.0: open `j.gpg' fd=3
gpg: DBG: iobuf-1.0: underflow: req=8192
gpg: DBG: iobuf-1.0: underflow: got=6705 rc=0
gpg: DBG: parse_packet(iob=1): type=3 length=13 (parse.mainproc.c.1261)
gpg: CAST5 encrypted data :======================ASK passphrase here
gpg: DBG: free_packet() type=3
gpg: DBG: iobuf-1.1: push `block_filter'
gpg: DBG: iobuf chain: 1.1 `block_filter' filter_eof=0 start=0 len=0
gpg: DBG: iobuf chain: 1.0 `file_filter(fd)' filter_eof=0 start=17 len=6705
gpg: DBG: init block_filter 0x8a398d0
gpg: DBG: parse_packet(iob=1): type=9 length=0 (new_ctb)
(parse.mainproc.c.1261)
gpg: encrypted with 1 passphrase
gpg: DBG: iobuf-1.1: underflow: req=8192
gpg: DBG: iobuf-1.1: underflow: got=6685 rc=0
gpg: decryption failed: bad key
gpg: DBG: free_packet() type=9
gpg: DBG: iobuf-1.1: underflow: req=8192
gpg: DBG: iobuf-1.1: underflow: got=0 rc=-1
gpg: DBG: free block_filter 0x8a398d0
gpg: DBG: iobuf-1.1: pop in underflow (!len)
gpg: DBG: iobuf chain: 1.0 `file_filter(fd)' filter_eof=0 start=6705
len=6705
gpg: DBG: iobuf-1.0: underflow: eof
gpg: DBG: iobuf-1.0: underflow: req=8192
gpg: DBG: iobuf-1.0: underflow: got=0 rc=-1
gpg: DBG: j.gpg: close fd 3
gpg: DBG: fd_cache_close (j.gpg) new slot created
gpg: DBG: iobuf-1.0: underflow: eof
gpg: DBG: iobuf-1.0: underflow: eof (due to filter eof)
gpg: DBG: iobuf-1.0: close `?'
random usage: poolsize=600 mixed=0 polls=0/2 added=10/176
              outmix=0 getlvl1=0/0 getlvl2=0/0
secmem usage: 1472/2240 bytes in 3/6 blocks of pool 2240/32768
[jason at f15 ~]$ echo $GPG_AGENT_INFO

================EMPTY GPG_AGENT_INFO. To avoid possible issue from genome,
I login in as ssh.

my gpg version is 1.4.19


Can I move the encrypted file to another machine? Since I use symmetric
encryption, it should not depend on the machine it is on. Right?

thanks



On Mon, Apr 13, 2015 at 6:06 PM, NIIBE Yutaka <gniibe at fsij.org> wrote:

> On 04/14/2015 07:27 AM, jason zhang wrote:
> > Any clue? Where should I start to investigate?
> >
> > I checked another encrypted file. I cloud not decrypt it, either.
> > But I can encrypt /decrypt new file successfully.
>
> Please let us know your configuration.  I think that it's
> ~/.gnupg/gpg.conf on Fedora.
>
> > Today, I could not decrypt it suddenly.
> > Here is what a decrypt session looks like
> > ------------------------------------------
> > /usr/local/bin/gpg j.gpg
> > gpg: CAST5 encrypted data
> > gpg: encrypted with 1 passphrase
> > gpg: decryption failed: bad key
> > ------------------------------------------
>
> Please include the version output of gpg --version in your report.
>
> Is it complete session log of yours?  I mean, GnuPG should ask you
> passphrase here.
>
> Possible case: If you enable gpg-agent by the configuration of
> use-agent, passphrase handling (and others) is done by gpg-agent.  And
> when your gpg-agent doesn't work and returns "", and it is failed and
> caused "bad key" error.  If so, please try with --no-use-agent.  To
> investigate what's going on with gpg-agent, please also let us know
> the output of:
>
>     $ echo $GPG_AGENT_INFO
>
> Thanks,
> --
>
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> Gnupg-users mailing list
> Gnupg-users at gnupg.org
> http://lists.gnupg.org/mailman/listinfo/gnupg-users
>



-- 
-jiesheng
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