10 More Discussions You Might Find Interesting
1. Solaris
Hi! I'm a new user... I'm looking for some informations about the ZDF file sytem... In my ubuntu box i have installed cryptkeeper, and i want to know if in Solaris 11 Express can find something similar... (3 Replies)
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Hello all,
I'm currently on HP-UX and will be moveing shortly to Red Hat Linux. Is there a crypt or an equivalent utitlity on RHEL?
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3. Shell Programming and Scripting
Hi all,
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5. UNIX for Advanced & Expert Users
Hi,
I will crypt a file, which requires password to open it in HP-UX. Please let me know the equivalent command in AIX 5.
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7. UNIX for Dummies Questions & Answers
Hi..
I need to decrypt a file in Solaris.
I'm giving command as
crypt decrypt_key filename.locked filename.unlocked
where
decrypt_key is the key key for decrypting the file.
filename.locked is the file thats encrypted and I need to de-crypt
filename.unlocked is the new file that I need
... (1 Reply)
Discussion started by: livetaurean19
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8. UNIX for Advanced & Expert Users
crypt is a command that is used to add more security to files.
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10. UNIX for Advanced & Expert Users
Hi,
does anyone know if the output from crypt can include control caracters or only ascii caracters ?
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DES(3) User Contributed Perl Documentation DES(3)
NAME
Crypt::DES - Perl DES encryption module
SYNOPSIS
use Crypt::DES;
DESCRIPTION
The module implements the Crypt::CBC interface, which has the following methods
blocksize =item keysize =item encrypt =item decrypt
FUNCTIONS
blocksize
Returns the size (in bytes) of the block cipher.
keysize
Returns the size (in bytes) of the key. Optimal size is 8 bytes.
new
my $cipher = new Crypt::DES $key;
This creates a new Crypt::DES BlockCipher object, using $key, where $key is a key of "keysize()" bytes.
encrypt
my $cipher = new Crypt::DES $key;
my $ciphertext = $cipher->encrypt($plaintext);
This function encrypts $plaintext and returns the $ciphertext where $plaintext and $ciphertext should be of "blocksize()" bytes.
decrypt
my $cipher = new Crypt::DES $key;
my $plaintext = $cipher->decrypt($ciphertext);
This function decrypts $ciphertext and returns the $plaintext where $plaintext and $ciphertext should be of "blocksize()" bytes.
EXAMPLE
my $key = pack("H16", "0123456789ABCDEF");
my $cipher = new Crypt::DES $key;
my $ciphertext = $cipher->encrypt("plaintex"); # NB - 8 bytes
print unpack("H16", $ciphertext), "
";
NOTES
Do note that DES only uses 8 byte keys and only works on 8 byte data blocks. If you're intending to encrypt larger blocks or entire files,
please use Crypt::CBC in conjunction with this module. See the Crypt::CBC documentation for proper syntax and use.
Also note that the DES algorithm is, by today's standard, weak encryption. Crypt::Blowfish is highly recommended if you're interested in
using strong encryption and a faster algorithm.
SEE ALSO
Crypt::Blowfish Crypt::IDEA
Bruce Schneier, Applied Cryptography, 1995, Second Edition, published by John Wiley & Sons, Inc.
COPYRIGHT
The implementation of the DES algorithm was developed by, and is copyright of, Eric Young (eay@mincom.oz.au). Other parts of the perl
extension and module are copyright of Systemics Ltd ( http://www.systemics.com/ ). Cross-platform work and packaging for single algorithm
distribution is copyright of W3Works, LLC.
MAINTAINER
This single-algorithm package and cross-platform code is maintained by Dave Paris <amused@pobox.com>.
perl v5.16.3 2005-12-08 DES(3)