Hi,
Panu Rissanen, Mark Tillotson and Paolo Barreto did a Skipjack
Implementation. I made a gnupg extension out of their source code
and assigned cipher algorithm 101 for it. PGP-CFB is used.
If you are interested in using a formerly secret NSA algorithm you
should get:
ftp://ftp.guug.de/pub/gcrypt/skipjack.c
See this file for instructions how to compile. Put the file into
/usr/local/lib/gnupg.
Usage (gnupg 0.3.0):
gpg --load-extension skipjack --cipher-algo skipjack -c <in >out
You can use it as any other cipher algorithm.
Skipjack has only a keysize of 80 bit and of course - the design
criteria are unknown. I provide it just for your fun; it is
experimental and I may decide to use raw-CFB in the future.
I don't know about the legal status of the algorithm or the source
code.
Werner
p.s. Anybody wants to do a GPLed Twofish implementation?
Panu Rissanen, Mark Tillotson and Paolo Barreto did a Skipjack
Implementation. I made a gnupg extension out of their source code
and assigned cipher algorithm 101 for it. PGP-CFB is used.
If you are interested in using a formerly secret NSA algorithm you
should get:
ftp://ftp.guug.de/pub/gcrypt/skipjack.c
See this file for instructions how to compile. Put the file into
/usr/local/lib/gnupg.
Usage (gnupg 0.3.0):
gpg --load-extension skipjack --cipher-algo skipjack -c <in >out
You can use it as any other cipher algorithm.
Skipjack has only a keysize of 80 bit and of course - the design
criteria are unknown. I provide it just for your fun; it is
experimental and I may decide to use raw-CFB in the future.
I don't know about the legal status of the algorithm or the source
code.
Werner
p.s. Anybody wants to do a GPLed Twofish implementation?