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Old 06-17-2008, 06:49 AM   #1
jkeertir
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Registered: Mar 2008
Posts: 70

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using openssl


Dear all,

I have used following script for encryption and decryption.I feel decryption is happending but when i check the data i cant read it .I have used following script


1) In local linux(assuming mount point is /mnt/ide1)

a) mkdir /mnt/ide1/backup1
b) mount -t nfs -o tcp rsize=32768,wsize=32768 192.168.1.92:/mnt/ide1/guest-share /mnt/ide1/backup1
(for mounting a folder of remote system,which is to be encryted and decryted)

c)mkdir -p /mnt/ide1/backup1/fullbackup
d) chmod 0777 /mnt/ide1/backup1/fullbackup
e) cd /mnt/ide1
f) tar -cf p1.tar guest-share
g) /etc/openssl bf -in p1.tar -out p1.tar.bf -k 111
h) cp -f p1.tar.bf /mnt/ide1/backup1/fullbackup
i) cd /mnt/ide1/backup1/fullbackup
j) /etc/openssl bf -d -in /mnt/ide1/backup1/fullbackup/p1.tar.bf -out /mnt/ide1/backup1/fullbackup/p2.tar -k 111
k) tar -xf p2.tar
l)chmod -R 0777 /mnt/ide1/backup1/fullbackup

Where am i going wrong ? Why cant i read the data of guest-share folder

PLease help me to solve the issue

With Regards,
Keerti
 
Old 06-18-2008, 12:02 AM   #2
billymayday
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Registered: Mar 2006
Location: Sydney, Australia
Distribution: Fedora, CentOS, OpenSuse, Slack, Gentoo, Debian, Arch, PCBSD
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Well, I did a quick test of steps (g) and (j), and they seem OK.

Why don't you compare the 2 files in (h) with each other (start with an md5sum or something) to make sure they are in fact the same.

I'd also perhaps try decrypting directly after (g) just as a test
 
Old 06-18-2008, 12:03 AM   #3
jschiwal
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Location: Fargo, ND
Distribution: SuSE AMD64
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Please post code in [code] blocks. Also capitalize the personal pronoun "I" to make your post legible, and put double spaces between sentences.

Look at "which openssl". Binary files should not be in /etc. Which distro are you using?
The command is probably located in /usr/bin/openssl or /usr/local/bin/openssl depending on whether you installed openssl from a package or compiled from source.

I tried out these commands (similar to yours) and in the end, "file test.tar" verified that the decoded file was a tarball.
Code:
openssl enc -bf -in test.tar -out test.tar.enc -k 111   
openssl enc -bf -d -in test.tar.enc -out test.tar -k 111
 
  


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