From b3f9b92a6ec1a9a5e4b4b36e484f2f62cc73277c Mon Sep 17 00:00:00 2001 From: Matt Domsch Date: Tue, 8 Nov 2005 09:40:47 -0800 Subject: [PPP]: add PPP MPPE encryption module From: Matt Domsch The patch below implements the Microsoft Point-to-Point Encryption method as a PPP compressor/decompressor. This is necessary for Linux clients and servers to interoperate with Microsoft Point-to-Point Tunneling Protocol (PPTP) servers (either Microsoft PPTP servers or the poptop project) which use MPPE to encrypt data when creating a VPN. This patch differs from the kernel_ppp_mppe DKMS pacakge at pptpclient.sourceforge.net by utilizing the kernel crypto routines rather than providing its own SHA1 and arcfour implementations. Minor changes to ppp_generic.c try to prevent a link from disabling compression (in our case, the encryption) after it has started using compression (encryption). Feedback to please. Signed-off-by: Matt Domsch Cc: James Cameron Cc: "David S. Miller" Signed-off-by: Brice Goglin Acked-by: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- drivers/net/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/net/Kconfig') diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 1958d9e16a3..24f1691b84f 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2523,6 +2523,19 @@ config PPP_BSDCOMP module; it is called bsd_comp and will show up in the directory modules once you have said "make modules". If unsure, say N. +config PPP_MPPE + tristate "PPP MPPE compression (encryption) (EXPERIMENTAL)" + depends on PPP && EXPERIMENTAL + select CRYPTO + select CRYPTO_SHA1 + select CRYPTO_ARC4 + ---help--- + Support for the MPPE Encryption protocol, as employed by the + Microsoft Point-to-Point Tunneling Protocol. + + See http://pptpclient.sourceforge.net/ for information on + configuring PPTP clients and servers to utilize this method. + config PPPOE tristate "PPP over Ethernet (EXPERIMENTAL)" depends on EXPERIMENTAL && PPP -- cgit v1.2.3