C implementation of Data Encryption Standard
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README.md

des

Description

Yet another C implementation of DES.

Usage

Example of usage :

$ ./des
    usage: des [-de] [-i infile] [-o outfile] [-k=key]
        -e       encrypt infile to outfile using key
        -d       decrypt infile to outfile using key
$ ./des -e -i /bin/ls -o /tmp/ls_encrypted -k "hello!"
$ ./des -d -i /bin/ls_encrypted -o /tmp/ls -k "hello!"
$ diff /tmp/ls /bin/ls

License

Copyright (c) 2010 C. Chorin, S. Rannou mxs@buffout.org

Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.