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gcipher(1) [debian man page]

GCIPHER(1)							       GNOME								GCIPHER(1)

NAME
gcipher - a simple encryption tool SYNOPSIS
gcipher gcipher [CIPHEROPTIONS]... [INPUT] [OUTPUT] gcipher [CIPHEROPTIONS]... -p PROXIEDHOST PROXIEDPORT LISTENINGPORT CIPHEROPTIONS: (-c | -C) CIPHER [-k KEY] "-" may be used for either INPUT or OUTPUT to represent STDIN or STDOUT respectively. EXAMPLES
Show the GUI: gcipher Encrypt a file using the Gie cipher: gcipher -c Gie inputfile outputfile Decrypt STDIN and output to STDOUT using Rot13: gcipher -C Rot -k 13 Listen on port 1027 and act as a proxy for port 1028 on gnu.org. Decrypt the data coming from gnu.org and encrypt data going to gnu.org using Vigenere with key linux: gcipher -c Vigenere -k linux -p gnu.org 1028 1027 DESCRIPTION
This is a simple encryption tool to work with home-grown encryption algorithms. It can run as either a GUI, a command-line application, or a network proxy. -c CIPHER encrypt using the given cipher -C CIPHER decrypt using the given cipher -k KEY set the key for the previous cipher -p PROXIEDHOST PROXIEDPORT LISTENINGPORT act as a network proxy CIPHERS
Gie a simple cipher doable by hand; no key is required Caesar Julius Caesar's code; no key is required Rot linear rotation; the amount of the rotation is given by the key which must be a number in the range [0, 25] Vigenere a version of ROT that uses a private key; the key must be made of lower-case letters FILES
.gcipher/plugins See plugins/README in a source distribution for more instructions on creating new plugins. AUTHOR
Written by Shannon -jj Behrens. REPORTING BUGS
Report bugs to <jjinux@yahoo.com>. COPYRIGHT
Copyright (C) 2003 Shannon -jj Behrens. This is open source software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. gcipher 1.0 June 2003 GCIPHER(1)

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CAST5(3pm)						User Contributed Perl Documentation						CAST5(3pm)

NAME
Crypt::CAST5 - CAST5 block cipher SYNOPSIS
use Crypt::CBC; my $crypt = Crypt::CBC->new({ key => "secret key", cipher => "CAST5", }); my $message = "All mimsy were the borogoves"; my $ciphertext = $crypt->encrypt($message); print unpack("H*", $ciphertext), " "; my $plaintext = $crypt->decrypt($ciphertext); print $plaintext, " "; DESCRIPTION
This module provides an implementation of the CAST5 block cipher using compiled C code for increased speed. CAST5 is also known as CAST-128. It is a product of the CAST design procedure developed by C. Adams and S. Tavares. The CAST5 cipher is available royalty-free. FUNCTIONS
blocksize Returns the CAST5 block size, which is 8 bytes. This function exists so that Crypt::CAST5 can work with Crypt::CBC. keysize Returns the maximum CAST5 key size, 16 bytes. new $cast5 = Crypt::CAST5->new($key); Create a new encryption object. If the optional key parameter is given, it will be passed to the init() function. init $cast5->init($key); Set or change the encryption key to be used. The key must be from 40 bits (5 bytes) to 128 bits (16 bytes) in length. Note that if the key used is 80 bits or less, encryption and decryption will be somewhat faster. It is best for the key to be random binary data, not something printable like a password. A message digest function may be useful for converting a password to an encryption key; see Digest::SHA1 or Digest::MD5. Note that Crypt::CBC runs the given "key" through MD5 to get the actual encryption key. encrypt $ciphertext = $cast5->encrypt($plaintext); Encrypt a block of plaintext using the current encryption key, and return the corresponding ciphertext. The input must be 8 bytes long, and the output has the same length. Note that the encryption is in ECB mode, which means that it encrypts each block independently. That can leave you vulnerable to dictionary attacks, so it is generally best to use some form of chaining between blocks; see Crypt::CBC. decrypt $plaintext = $cast5->decrypt($ciphertext); Decrypt the ciphertext and return the corresponding plaintext. SEE ALSO
RFC 2144, "The CAST-128 Encryption Algorithm", C. Adams, May 1997 Crypt::CBC AUTHOR
Bob Mathews, <bobmathews@alumni.calpoly.edu> COPYRIGHT AND LICENSE
Copyright (C) 2002-2006 Bob Mathews This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2006-07-01 CAST5(3pm)
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