Re: Blowfish issues with somewhat big files

[Gary Greene <ggreene@xxxxxxxxxxxxxxxxxxx>]

On 7/28/10 12:10 PM, "Stephen Harris" <lists@xxxxxxxxxx> wrote:
> On Wed, Jul 28, 2010 at 04:04:26PM -0300, Sergio Belkin wrote:
>> I've encrypted some database dumps with
>> 
>> openssl bf -d -in dumpfile.bf -out dumpfile -k mykey
>> 
>> bad decrypt
>> 14142:error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad
>> decrypt:evp_enc.c:325:
>> 
>> The weird thing is if I do the same with smaller files it can decrypt
>> with no problem. I use openssl-0.9.8e-12.el5 on Centos 5.4.
> 
> Is the file over 2Gb in size?  A number of programs have 2Gb filesize
> limits (eg "unzip").  You could, perhaps, use it as a pipe:
>   cat dumpfile.bf | openssl bf -d -k mykey > dumpfile

This only is caused by applications that either a) impose a 2GB limit
directly (zip being one) or b) have not been built with large file support
(-DLARGEFILE_SOURCE -DFILE_OFFSET_BITS=64).

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