Commit Graph

13 Commits

Author SHA1 Message Date
Bruce M Simpson
1cfd4b5326 Initial import of RFC 2385 (TCP-MD5) digest support.
This is the first of two commits; bringing in the kernel support first.
This can be enabled by compiling a kernel with options TCP_SIGNATURE
and FAST_IPSEC.

For the uninitiated, this is a TCP option which provides for a means of
authenticating TCP sessions which came into being before IPSEC. It is
still relevant today, however, as it is used by many commercial router
vendors, particularly with BGP, and as such has become a requirement for
interconnect at many major Internet points of presence.

Several parts of the TCP and IP headers, including the segment payload,
are digested with MD5, including a shared secret. The PF_KEY interface
is used to manage the secrets using security associations in the SADB.

There is a limitation here in that as there is no way to map a TCP flow
per-port back to an SPI without polluting tcpcb or using the SPD; the
code to do the latter is unstable at this time. Therefore this code only
supports per-host keying granularity.

Whilst FAST_IPSEC is mutually exclusive with KAME IPSEC (and thus IPv6),
TCP_SIGNATURE applies only to IPv4. For the vast majority of prospective
users of this feature, this will not pose any problem.

This implementation is output-only; that is, the option is honoured when
responding to a host initiating a TCP session, but no effort is made
[yet] to authenticate inbound traffic. This is, however, sufficient to
interwork with Cisco equipment.

Tested with a Cisco 2501 running IOS 12.0(27), and Quagga 0.96.4 with
local patches. Patches for tcpdump to validate TCP-MD5 sessions are also
available from me upon request.

Sponsored by:	sentex.net
2004-02-11 04:26:04 +00:00
Hajimu UMEMOTO
979ed0d5e6 fix comments.
Obtained from:	KAME
2003-11-14 18:17:07 +00:00
Hajimu UMEMOTO
b42ac57f4f - support AES counter mode for ESP.
- use size_t as return type of schedlen(), as there's no error
  check needed.
- clear key schedule buffer before freeing.

Obtained from:	KAME
2003-10-13 14:57:41 +00:00
Hajimu UMEMOTO
c65ee7c758 - support AES XCBC MAC for AH
- correct SADB_X_AALG_RIPEMD160HMAC to 8

Obtained from:	KAME
2003-10-13 04:54:51 +00:00
Sam Leffler
c919ec4b66 add definitions for RIPEMD-160 HMAC and Skipjack encryption algorithms,
for use by "Fast IPsec"
2002-10-16 02:18:56 +00:00
Hajimu UMEMOTO
3a3b49aaff Correct the definitions of SADB_* to be compatible with
RFC2407/IANA assignment.  This change breaks binary
compatibility.  So, you need to recompile IPsec related
applications.
2002-10-15 20:59:56 +00:00
Hajimu UMEMOTO
232bdaf61f printed current sequence number of the SA. accordingly, changed
into sadb_x_sa2_sequence from sadb_x_sa2_reserved3 in the sadb_x_sa2
structure.  Also the output of setkey is changed.  sequence number
of the sadb is replaced to the end of the output.

Obtained from:	KAME
2001-08-06 19:40:01 +00:00
Hajimu UMEMOTO
3384154590 Sync with recent KAME.
This work was based on kame-20010528-freebsd43-snap.tgz and some
critical problem after the snap was out were fixed.
There are many many changes since last KAME merge.

TODO:
  - The definitions of SADB_* in sys/net/pfkeyv2.h are still different
    from RFC2407/IANA assignment because of binary compatibility
    issue.  It should be fixed under 5-CURRENT.
  - ip6po_m member of struct ip6_pktopts is no longer used.  But, it
    is still there because of binary compatibility issue.  It should
    be removed under 5-CURRENT.

Reviewed by:	itojun
Obtained from:	KAME
MFC after:	3 weeks
2001-06-11 12:39:29 +00:00
Jun-ichiro itojun Hagino
686cdd19b1 sync with kame tree as of july00. tons of bug fixes/improvements.
API changes:
- additional IPv6 ioctls
- IPsec PF_KEY API was changed, it is mandatory to upgrade setkey(8).
  (also syntax change)
2000-07-04 16:35:15 +00:00
Yoshinobu Inoue
b540203735 cosmetic change: sort function prototypes
Specified by: bde
2000-01-15 05:06:14 +00:00
Yoshinobu Inoue
c3a5e52033 -K&R fix for some prototype declaration
-fix some comments for #endif to match them with their #ifndef

Submitted by: bde
2000-01-15 04:57:12 +00:00
Peter Wemm
664a31e496 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 04:46:21 +00:00
Yoshinobu Inoue
82cd038d51 KAME netinet6 basic part(no IPsec,no V6 Multicast Forwarding, no UDP/TCP
for IPv6 yet)

With this patch, you can assigne IPv6 addr automatically, and can reply to
IPv6 ping.

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project
1999-11-22 02:45:11 +00:00