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General software and network General OS-independent software and network questions, X11, MTA, routing, etc. |
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What's the best way to encrypt or protect files on your computer? Say a plain ascii file that holds sensitive personal or company data that you don't want left as plain ascii text.
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And the WORD was made flesh, and dwelt among us. (John 1:14) |
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I would use OpenSSL, but that's just me...
![]() $ openssl enc -aes-256-cbc -salt -in naughty-doc.txt -out naughty-doc.encrypt This will prompt you for a passphrase, now.. that can be a password, but it can also be a phrase.. you'll definitely need to remember the grammar & capitalization though. If you decide to use a password, make it a long and complex one... ![]() To decrypt the file: $ openssl enc -d -aes-256-cbc -in naughty-doc.encrypt -out naughty-doc.txt You can obtain a list of ciphers via: $ openssl enc -h Good luck.. ![]() Last edited by BSDfan666; 19th September 2008 at 03:04 AM. |
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I usually apply a Caesar cipher (not rot13), archive the data with a password, and encrypt it again in a stronger manor.
Whether or not it's a good idea, I dunno, but works for me.
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My Journal Thou shalt check the array bounds of all strings (indeed, all arrays), for surely where thou typest ``foo'' someone someday shall type ``supercalifragilisticexpialidocious''. |
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Each BSD has it's own way of encrypting the whole hard drive. On FreeBSD you may go for geli or gdbe http://www.freebsd.org/doc/en_US.ISO...ncrypting.html. On NetBSD you'll go for CGD http://www.netbsd.org/docs/guide/en/chap-cgd.html and on OpenBSD(which I use) you'll go for http://geektechnique.org/projectlab/...leserver-howto
For individual files and emails I use GnuPG. ![]()
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If it moves, crypt it. Unless it's static - than you should double-crypt it. |
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Does anyone know where (/etc/passwd ?) and how login passwords are stored and encrypted (if at all)?
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And the WORD was made flesh, and dwelt among us. (John 1:14) |
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As far as I know, it depends on the system and it's settings JMJ; it should obey /etc/login.conf.
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My Journal Thou shalt check the array bounds of all strings (indeed, all arrays), for surely where thou typest ``foo'' someone someday shall type ``supercalifragilisticexpialidocious''. |
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Use the tar(1) luke.
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religions, worst damnation of mankind "If 386BSD had been available when I started on Linux, Linux would probably never had happened." Linus Torvalds Linux is not UNIX! Face it! It is not an insult. It is fact: GNU is a recursive acronym for “GNU's Not UNIX”. vermaden's: links resources deviantart spreadbsd |
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Do not use compresion then, tar alone does not compress files.
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religions, worst damnation of mankind "If 386BSD had been available when I started on Linux, Linux would probably never had happened." Linus Torvalds Linux is not UNIX! Face it! It is not an insult. It is fact: GNU is a recursive acronym for “GNU's Not UNIX”. vermaden's: links resources deviantart spreadbsd |
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Why don't you simply create another user account called userX. # chmod 700 ~userX Then, put all ya top-secret stuff in there. Anytime you want to access the top-secret stuff just do the following from your regular account: $ su - userX Ofcourse, for max. safety use tar + openssl. |
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Example: Code:
steghide embed -cf picture.jpg -ef encrypted_file -sf new_picture.jpg Code:
steghide extract -sf new_picture.jpg /usr/ports/security/steghide |
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It may be little suspicious if someone would find a JPG image with 3.0GB size
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religions, worst damnation of mankind "If 386BSD had been available when I started on Linux, Linux would probably never had happened." Linus Torvalds Linux is not UNIX! Face it! It is not an insult. It is fact: GNU is a recursive acronym for “GNU's Not UNIX”. vermaden's: links resources deviantart spreadbsd |
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I think this topic is best and nice topic in all of this forums. I like and love this topic
after I test openssl and encrypt file , I can understand I can delete encrypt file and it is so bad I want way to hide file and nobody can delete that file , I will test steghide I thinks this is good thing. but I need something like truecrypt. |
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This is where file permissions and routine backups come in..
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Has anybody tried FUSE EncFS? It appears to be a file-backed file system with no pre-determined size. Also, given that it is FUSE based, it should be fairly portable.
Last edited by ddekok; 9th October 2008 at 05:14 PM. |
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