encryption bloats file

[Scott Lambdin]

Looks like Roscoe got it.   literal data block that makes up the
difference.  Thanks everyone.

Now to see if there is some reason for it.

--Scott

On Fri, Jan 9, 2009 at 10:33 PM, Scott Lambdin <lopaki at gmail.com> wrote:

> I found a file in rejects, but it may be partial.  It gives us some
> information, though.
>
> The pgp file was 406184088 bytes and unencrypted is 175246253 bytes.
>
> gpg -v -v -o a_file.out -d a_file.pgp
>
> gpg: armor: BEGIN PGP MESSAGE
> gpg: armor header: Version: McAfee E-Business Server v7.5 - Full License
> :pubkey enc packet: version 3, algo 1, keyid 123456789012345
>         data: [2047 bits]
> gpg: public key is ABCD1234
> You need a passphrase to unlock the secret key for
> user: "Janeane Garofalo <JG at thyservice.com>"
> 2048-bit RSA key, ID ABCD4321
>
> gpg: public key encrypted data: good DEK
> :encrypted data packet:
>         length: 42097820
> gpg: encrypted with 2048-bit RSA key, ID ABCD4321
> gpg: IDEA encrypted data
> :compressed packet: algo=1
> :literal data packet:
>         mode t (74), created 1509949440, name="file-100-1",
>         raw data: 227869810 bytes
> gpg: original file name="file100"
> gpg: no valid OpenPGP data found.
> gpg: fatal: zlib inflate problem: invalid block type
> secmem usage: 2208/4704 bytes in 5/15 blocks of pool 4960/32768
>
>   On Fri, Jan 9, 2009 at 10:02 PM, Roscoe <eocsor at gmail.com> wrote:
>
>> Dunno how likely it is, but maybe someone made an attempt at hiding
>> the size of the file in transit via appending arbitrary data.
>>
>> 2009/1/10 Scott Lambdin <lopaki at gmail.com>:
>>  > Hello -
>> >
>> > Someone sends us a big ~700MB pgp encrypted file and when we decrypt it
>> the
>> > resulting file is about half that size.  Anyone have an idea what they
>> might
>> > be doing to swell it up like that?
>> >
>> > --
>> > There's a box?
>> >
>>  > _______________________________________________
>> > Gnupg-users mailing list
>> > Gnupg-users at gnupg.org
>> > http://lists.gnupg.org/mailman/listinfo/gnupg-users
>> >
>> >
>>
>
>
>
> --
> There's a box?
>



-- 
There's a box?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: </pipermail/attachments/20090109/49f8d15d/attachment.htm>