[CentOS] Blowfish issues with somewhat big files

[Sergio Belkin]

2010/7/29 Sergio Belkin <sebelk at gmail.com>:
> 2010/7/28 Sergio Belkin <sebelk at gmail.com>:
>> 2010/7/28 Stephen Harris <lists at spuddy.org>:
>>> DFILE_OFFSET_BITS=64
>>
>> I have installed both 32 and 64 bit versions of openssl, can that be
>> the cause of this problem?
>>
>> Thanks in advance
>>
>> --
>> --
>
> My fault, indeed, somewhat large files is a relative term, for example
> it can't decrypt files
>
>
> You can read full ouput on: http://pastebin.com/7yZeGEa4
>
> I've tried using both
>
> "openssl bf  -d -in $1 -out $FILE -k $KEY"  and  "cat $1 | openssl  bf
> -debug -d -out $FILE -k $KEY > $1.unc"
>
>
> and failed either.
>
> For encrypting I use:
>
> # esta funcion reemplaza a guardapgsql, guardaldap, y guardamysql
> guardadump() {
>   logstr "guardando $1-dump con blowfish"
>   ARCH=$1.dump.all.$DATE.gz.bf
>   case $1 in
>      mysql) CMD='mysqldump -Q -l -F --add-locks --add-drop-table -A';;
>      ldap) CMD='slapcat -c ';;
>      pgsql) CMD='sudo -u postgres pg_dumpall -v -c';;
>   esac
>   $CMD | compress | openssl bf -out $ARCH -k "$key" 2>> $LOGFILE
>   return $?
> }
>
> (Of course it's only a part of a file)
>
>
> I started to think that size is not the problem, for example I have files:
>
> -rw-r--r-- 1 root root     10264 Jul 29 00:24
> usr.local.etc.Thu-29-Jul-2010.tgz.bf
> -rw-r--r-- 1 root root   4402600 Jul 29 00:23 dir.Thu-29-Jul-2010.gz
> -rw-r--r-- 1 root root   4853784 Jul 29 00:24
> usr.lib.perl5.5.8.8.UP.Thu-29-Jul-2010.tgz.bf
> -rw-r--r-- 1 root root  12554264 Jul 29 00:24 etc.Thu-29-Jul-2010.tgz.bf
> -rw-r--r-- 1 root root  17302224 Jul 29 00:23
> ldap.dump.all.Thu-29-Jul-2010.gz.bf
> -rw-r--r-- 1 root root  92241944 Jul 29 00:24 scripts.Thu-29-Jul-2010.tgz.bf
> -rw-r--r-- 1 root root 209591864 Jul 29 00:23
> pgsql.dump.all.Thu-29-Jul-2010.gz.bf
>
> And scripts.Thu-29-Jul-2010.tgz.bf can be decrypted. May compress the
> "culprit"? I tried with a small database (544 K compressed with
> ncompress) and have no problem anyway, so I am rather puzzled :(
>
> Any idea?
>
> TIA
>
>

I forgot to say that scripts.Thu-29-Jul-2010.tgz.bf it is generated in
a different way of dump files:

guardassl() {
   if [ "$2" != "" ];then
      EXCLUDE="--exclude \"$2\""
   fi
   logstr "guardando $1 con blowfish $EXCLUDE"
   ARCH=`echo "$1" | sed 's/^\///'|sed 's/\//./g'`.$DATE.tgz.bf
   tar --create --preserve --gzip $EXCLUDE $1 | openssl bf -out $ARCH
-k $KEY 2>> $LOGFILE
   return $?
}



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