---
name: "gcipher"
section: "1"
platform: "linux"
package: "gcipher"
version: "1.1-1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/gcipher"
---

# gcipher(1)

a simple encryption tool

## 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 © 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.