Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-19 Thread John Doe
From: Kai Schaetzl mailli...@conactive.com I would rather work on single files or tars on directory basis. Using a single big file creates a very large single point of failure. Or use an encrypted file system (of course, also a single point of failure, but probably better handling). Afio

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-19 Thread Xinhuan Zheng
Hello, Thanks for all feedback I got. I am pretty sure that if I used ³openssl enc² method, it is able to handle large file over 250g size perfectly. I think openssl installed on the system is capable of doing large file support. However, when using ³openssl smime², it is not able to. Apparently

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-19 Thread Brian Mathis
On Wed, Dec 17, 2014 at 12:14 PM, Xinhuan Zheng xzh...@christianbook.com wrote: Hello CentOS list, I have a requirement that I need to use encryption technology to encrypt very large tar file on a daily basis. The tar file is over 250G size and those are data backup. Every night the server

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-19 Thread Les Mikesell
On Fri, Dec 19, 2014 at 2:40 PM, Brian Mathis brian.mathis+cen...@betteradmin.com wrote: GPG is really what you want to be using for this. OpenSSL is a general toolkit that provide a lot of good functions, but you need to cobble some things together yourself. GPG is meant to handle all of

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-19 Thread Brian Mathis
On Fri, Dec 19, 2014 at 3:48 PM, Les Mikesell lesmikes...@gmail.com wrote: On Fri, Dec 19, 2014 at 2:40 PM, Brian Mathis brian.mathis+cen...@betteradmin.com wrote: GPG is really what you want to be using for this. OpenSSL is a general toolkit that provide a lot of good functions, but

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-19 Thread John R Pierce
On 12/19/2014 1:22 PM, Brian Mathis wrote: It doesn't appear to be available for any program running on CentOS 5. https://www.centos.org/forums/viewtopic.php?t=17713 that article is only talking about openssl... openssh, gpg, and others use their own crypto implementations. not

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-18 Thread Kai Schaetzl
I would rather work on single files or tars on directory basis. Using a single big file creates a very large single point of failure. Or use an encrypted file system (of course, also a single point of failure, but probably better handling). Kai ___

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-18 Thread wwp
Hello, On Thu, 18 Dec 2014 16:51:31 +0100 Kai Schaetzl mailli...@conactive.com wrote: I would rather work on single files or tars on directory basis. Using a single big file creates a very large single point of failure. Or use an encrypted file system (of course, also a single point of

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-18 Thread Les Mikesell
On Thu, Dec 18, 2014 at 10:41 AM, wwp subscr...@free.fr wrote: I would rather work on single files or tars on directory basis. Using a single big file creates a very large single point of failure. Or use an encrypted file system (of course, also a single point of failure, but probably better

[CentOS] Asymmetric encryption for very large tar file

2014-12-17 Thread Xinhuan Zheng
Hello CentOS list, I have a requirement that I need to use encryption technology to encrypt very large tar file on a daily basis. The tar file is over 250G size and those are data backup. Every night the server generated a 250G data backup and it¹s tar¹ed into one tarball file. I want to encrypt

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-17 Thread Stephen Harris
On Wed, Dec 17, 2014 at 05:14:21PM +, Xinhuan Zheng wrote: used is openssl smime -encrypt -aes256 -in backup.tar -binary -outform DEM -out backup.tar.ssl public.pem². The resulting backup.tar.ssl file is only 2G then encryption process stops there and refuse to do more. Cannot get around

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-17 Thread Les Mikesell
On Wed, Dec 17, 2014 at 11:14 AM, Xinhuan Zheng xzh...@christianbook.com wrote: I have a requirement that I need to use encryption technology to encrypt very large tar file on a daily basis. The tar file is over 250G size and those are data backup. Every night the server generated a 250G data

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-17 Thread Leon Fauster
Am 17.12.2014 um 18:42 schrieb Les Mikesell lesmikes...@gmail.com: On Wed, Dec 17, 2014 at 11:14 AM, Xinhuan Zheng xzh...@christianbook.com wrote: I have a requirement that I need to use encryption technology to encrypt very large tar file on a daily basis. The tar file is over 250G size and

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-17 Thread Markus
On 17/12/14 18:54, Leon Fauster wrote: Am 17.12.2014 um 18:42 schrieb Les Mikesell lesmikes...@gmail.com: On Wed, Dec 17, 2014 at 11:14 AM, Xinhuan Zheng xzh...@christianbook.com wrote: I have a requirement that I need to use encryption technology to encrypt very large tar file on a daily

Re: [CentOS] Asymmetric encryption for very large tar file [NOW: Uselsss Use of CAT award!!]

2014-12-17 Thread Fred Smith
On Wed, Dec 17, 2014 at 06:58:40PM +0100, Markus wrote: On 17/12/14 18:54, Leon Fauster wrote: Am 17.12.2014 um 18:42 schrieb Les Mikesell lesmikes...@gmail.com: On Wed, Dec 17, 2014 at 11:14 AM, Xinhuan Zheng xzh...@christianbook.com wrote: I have a requirement that I need to use

Re: [CentOS] Asymmetric encryption for very large tar file

2014-12-17 Thread mario sergio kirdeika junior
hi all sorry my poor english.. but you need encrypt that large file in symetric way. use the asymetric way ( public/private key par) to encrypt the symetric key. Em 17/12/2014 15:58, Markus markus.scharit...@gmail.com escreveu: On 17/12/14 18:54, Leon Fauster wrote: Am 17.12.2014 um 18:42