Commit graph

54 commits

Author SHA1 Message Date
Stevent Li
950c563076 EAP peer: Add Session-Id derivation
This adds a new getSessionId() callback for EAP peer methods to allow
EAP Session-Id to be derived. This commits implements this for EAP-FAST,
EAP-GPSK, EAP-IKEv2, EAP-PEAP, EAP-TLS, and EAP-TTLS.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2013-02-09 01:20:38 +02:00
Jouni Malinen
065d2895b4 Add UNAUTH-TLS vendor specific EAP type
This EAP type uses a vendor specific expanded EAP header to encapsulate
EAP-TLS with a configuration where the EAP server does not authenticate
the EAP peer. In other words, this method includes only server
authentication. The peer is configured with only the ca_cert parameter
(similarly to other TLS-based EAP methods). This method can be used for
cases where the network provides free access to anyone, but use of RSN
with a securely derived unique PMK for each station is desired.

The expanded EAP header uses the hostapd/wpa_supplicant vendor
code 39068 and vendor type 1 to identify the UNAUTH-TLS method.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-08-22 22:34:11 +03:00
Jouni Malinen
d13f9857f8 Use proper private enterprise number for EAP VENDOR-TEST
Now that the project has its own code, it should be used with the
VENDOR-TEST EAP method.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-08-22 21:37:19 +03:00
Jouni Malinen
f54eb34995 Add extra validation of EAP header length field
These validation steps are already done in the EAP parsing code and in
the EAP methods, but the additional check is defensive programming and
can make the validation of received EAP messages more easier to
understand.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-08-07 23:03:25 +03:00
Jouni Malinen
daf10baf9e EAP-pwd: Replace direct OpenSSL HMAC use with wrapper
This is a step towards allowing EAP-pwd to be supported with other
crypto libraries.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-07-02 22:10:03 +03:00
Jouni Malinen
8350d0afd8 EAP-pwd: Avoid double-frees on some error paths
At least some error paths (e.g., hitting the limit on hunt-and-peck
iterations) could have resulted in double-freeing of some memory
allocations. Avoid this by setting the pointers to NULL after they have
been freed instead of trying to free the data structure in a location
where some external references cannot be cleared. [Bug 453]

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-06-30 16:16:32 +03:00
Jouni Malinen
0f27f15911 EAP-pwd: Increase maximum number of hunting-and-pecking iterations
The previously used limit (10) is too small for practical purposes since
it can result in about 1 out of 1000 authentication attempts failing.
Increase the limit to 30 to avoid such issues. [Bug 453]

Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
2012-06-30 16:12:41 +03:00
Jouni Malinen
762e4ce620 EAP-AKA': Update to RFC 5448
There was a technical change between the last IETF draft version
(draft-arkko-eap-aka-kdf-10) and RFC 5448 in the leading characters
used in the username (i.e., use unique characters for EAP-AKA' instead
of reusing the EAP-AKA ones). This commit updates EAP-AKA' server and
peer implementations to use the leading characters based on the final
RFC.

Note: This will make EAP-AKA' not interoperate between the earlier
draft version and the new version.

Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
2012-05-02 20:45:01 +03:00
Jouni Malinen
0f3d578efc Remove the GPL notification from files contributed by Jouni Malinen
Remove the GPL notification text from the files that were
initially contributed by myself.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-02-11 19:39:36 +02:00
Jouni Malinen
0dd1603c3f Remove the GPL notification from EAP-pwd implementation
Remove the GPL notification text from EAP-pwd implementation per
approval from Dan Harkins who contributed these files.
(email from Dan Harkins <dharkins@lounge.org> dated
Wed, 4 Jan 2012 16:25:48 -0800)

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-02-11 19:39:36 +02:00
Dan Harkins
5ea93947ca EAP-pwd: Add support for fragmentation
Signed-hostap: Dan Harkins <dharkins@lounge.org>
2012-02-11 12:46:30 +02:00
Dan Harkins
a7cbb4753c EAP-pwd: Fix the argument name in compute_keys()
The parameters used here are confirm, not commit values.

Signed-hostap: Dan Harkins <dharkins@lounge.org>
2012-02-11 12:14:31 +02:00
Jouni Malinen
cd52acec85 Rename tls_prf() to tls_prf_sha1_md5()
Prepare for multiple TLS PRF functions by renaming the SHA1+MD5 based
TLS PRF function to more specific name and add tls_prf() within the
internal TLS implementation as a wrapper for this for now.

Signed-hostap: Jouni Malinen <j@w1.fi>
2011-11-27 21:27:01 +02:00
Jouni Malinen
5419d6afed EAP-pwd: Remove struct eap_pwd_hdr
This structure was not really used for anything apart from figuring out
length of the EAP-pwd header (and even that in a way that would not work
with fragmentation). Since the bitfields in the structure could have
been problematic depending on target endianness, remove this unnecessary
structure.

Signed-hostap: Jouni Malinen <j@w1.fi>
2011-11-19 16:52:52 +02:00
Dan Harkins
e547e071e1 EAP-pwd: Fix zero-padding of input to H()
Another niceness of OpenSSL is that if the high-order bit of a 521-bit
big num is not set then BN_bn2bin() will just return 65 bytes instead of
66 bytes with the 1st (big endian, after all) being all zero. When this
happens the wrong number of octets are mixed into function H(). So
there's a whole bunch of "offset" computations and BN_bn2bin() dumps the
big number into a buffer + offset. That should be obvious in the patch
too.
2011-11-19 16:47:25 +02:00
Dan Harkins
18f5f3de03 EAP-pwd: Fix KDF for group 21
The previous EAP-pwd KDF implemented has an issue with group 21, that is
an elliptic curve group based on a 521 bit prime. 521 is not an even
multiple of 8, and therein lies the problem.

OpenSSL's BN library interprets a string of bits as in big-endian format
so all the calls of BN_bin2bn() will take the binary blob of bits and
turn it into a big number in big-endian format. In the EAP-pwd KDF, I am
stretching the key to "primebitlen". When that is not an even multiple
of 8 I have to mask off the excess. But I was masking off the excess
bits in the 1st octet (big endian after all) but that isn't right. The
KDF produces a string of endian-less bits. The 521st bit is the first
bit in the last octet, not the 7th bit in the first octet. So that has
been fixed and you can see in the attached diff what I'm doing.
2011-11-19 16:43:49 +02:00
Jouni Malinen
3724ddc0c1 PEAP: Verify peap_prfplus() result
This function can fail in theory since the SHA-1 functions are
allowed to return an error. While this does not really happen in
practice (we would not get this far if SHA-1 does not work), it is
cleaner to include the error handling here to keep static analyzers
happier. [Bug 421]

Signed-hostap: Jouni Malinen <j@w1.fi>
2011-11-13 11:29:17 +02:00
Pavel Roskin
ffbf1eaa26 Fix typos found by codespell
Signed-off-by: Pavel Roskin <proski@gnu.org>
2011-09-22 00:43:59 +03:00
Dan Harkins
e4d7b22a53 EAP-pwd: Fix some interoperability issues
The changes are:

  1. the word "and" in the hunting-and-pecking string passed to the KDF
     should be capitalized.
  2. the primebitlen used in the KDF should be a short not an int.
  3. the computation of MK in hostap is based on an older version of the
     draft and is not the way it's specified in the RFC.
  4. the group being passed into computation of the Commit was not in
     network order.
2011-01-16 13:12:07 +02:00
Jouni Malinen
b13d3d63d5 EAP-pwd: Use os_free to free memory allocated with os_malloc
The direct use of free() caused a crash with CONFIG_WPA_TRACE=y.
2011-01-16 13:02:11 +02:00
Jouni Malinen
3642c4313a Annotate places depending on strong random numbers
This commit adds a new wrapper, random_get_bytes(), that is currently
defined to use os_get_random() as is. The places using
random_get_bytes() depend on the returned value being strong random
number, i.e., something that is infeasible for external device to
figure out. These values are used either directly as a key or as
nonces/challenges that are used as input for key derivation or
authentication.

The remaining direct uses of os_get_random() do not need as strong
random numbers to function correctly.
2010-11-24 01:05:20 +02:00
Jouni Malinen
3d32c6517d EAP-pwd: Fix couple of memory leaks 2010-09-14 22:16:17 -10:00
Dan Harkins
df684d82ff EAP-pwd: Add support for EAP-pwd server and peer functionality
This adds an initial EAP-pwd (RFC 5931) implementation. For now,
this requires OpenSSL.
2010-09-14 21:51:40 -10:00
Jouni Malinen
7992b07f6a Remove unnecessary SUBDIRS loops from src/*/Makefile
There are no subdirectories in any of these directories or plans
for adding ones. As such, there is no point in running the loop
that does not do anything and can cause problems with some shells.
2010-04-17 17:10:31 +03:00
Jouni Malinen
03da66bd59 Remove src/crypto from default include path
In addition, start ordering header file includes to be in more
consistent order: system header files, src/utils, src/*, same
directory as the *.c file.
2009-11-29 23:04:43 +02:00
Jouni Malinen
be299ca4ce Pass digest return value to CHAP/MSCHAPv2 caller 2009-08-16 18:38:35 +03:00
Jouni Malinen
064bb8232c Add root .gitignore file to cleanup ignore lists
This removes need for local configuration to ignore *.o and *~
and allows the src/*/.gitignore files to be removed (subdirectories
will inherit the rules from the root .gitignore).
2009-06-29 21:47:19 +03:00
Jouni Malinen
1e5839e06f Rename EAP server defines from EAP_* to EAP_SERVER_*
This allows separate set of EAP server and peer methods to be built into
a single binary.
2009-03-25 12:06:19 +02:00
Jouni Malinen
c590cb67d4 Update draft-cam-winget-eap-fast-provisioning references to RFC 5422 2009-03-14 10:30:14 +02:00
Jouni Malinen
358b98668e Update EAP-GPSK references from internet draft to RFC 5433 2009-02-26 23:08:40 +02:00
Daniel Mierswa
d94d4bafbb Improved 'make install' (use BINDIR/LIBDIR, install shared objects) 2009-02-15 14:22:50 +02:00
Jouni Malinen
26d1dc96e9 Include the header file to validate function prototype. 2009-01-03 20:21:12 +02:00
Jouni Malinen
a2b3a34bab IANA allocated EAP method type 51 to EAP-GPSK 2008-12-20 12:39:24 +02:00
Jouni Malinen
a9d1364c5f Merged EAP-AKA' into eap_aka.c and added it to defconfig/ChangeLog 2008-12-07 19:24:56 +02:00
Jouni Malinen
01b0569437 Added protection against EAP-AKA' -> EAP-AKA bidding down attacks
AT_BIDDING attribute is included in EAP-AKA/Challenge to allow peer to
know whether the server would have preferred EAP-AKA'.
2008-12-05 22:25:47 +02:00
Jouni Malinen
8de5048e26 Fixed a typo in a comment 2008-12-04 22:15:51 +02:00
Jouni Malinen
a478ef0d12 EAP-AKA': Added CK',IK' derivation
This is based on a change request 3GPP TS 33.402 CR 0033 for version
8.1.1. The hardcoded ANID is now 'WLAN' since that is used in
3GPP TS 24.302.
2008-12-04 21:50:56 +02:00
Jouni Malinen
6ec4021c03 EAP-AKA': Added processing of AT_KDF and AT_KDF_INPUT attributes
Network Name is not yet generated and validated based on 3GPP.33.402
(i.e., a hardcoded string is used in server and anything is accepted in
peer).
2008-12-04 20:29:46 +02:00
Jouni Malinen
b8ab624984 Fixed EAP-SIM and EAP-AKA AT_IDENTITY parsing (server only)
The attribute uses 'Actual Identity Length' field to indicate the exact
(pre-padding) length of the Identity. This actual length should be used
as the length, not the remaining attribute length.

This was previously worked around by stripping null termination away
from the end of the identity string at EAP-SIM and EAP-AKA server code.
However, it is likely that that workaround is not really needed and the
real problem was in AT_IDENTITY parsing. Anyway, the workaround is left
in just in case it was really needed with some implementations.
2008-12-04 18:51:42 +02:00
Jouni Malinen
9881795e2c EAP-AKA': Derive keys using the new KDF (PRF') 2008-12-03 19:22:20 +02:00
Jouni Malinen
806f869918 EAP-AKA': Use HMAC-SHA-256-128 for AT_MAC 2008-12-02 21:29:26 +02:00
Jouni Malinen
f54e2c34bf EAP-AKA': Use SHA256 for AT_CHECKCODE 2008-12-02 21:05:38 +02:00
Jouni Malinen
8c37556cd1 Add a starting point for EAP-AKA' (draft-arkko-eap-aka-kdf-10)
This is just making an as-is copy of EAP-AKA server and peer
implementation into a new file and by using the different EAP method
type that is allocated for EAP-AKA' (50). None of the other differences
between EAP-AKA and EAP-AKA' are not yet included.

It is likely that once EAP-AKA' implementation is done and is found to
work correctly, large part of the EAP-AKA and EAP-AKA' code will be
shared. However, it is not reasonable to destabilize EAP-AKA
implementation at this point before it is clearer what the final
differences will be.
2008-12-02 20:12:49 +02:00
Jouni Malinen
ad08c3633c Added preliminary Wi-Fi Protected Setup (WPS) implementation
This adds WPS support for both hostapd and wpa_supplicant. Both programs
can be configured to act as WPS Enrollee and Registrar. Both PBC and PIN
methods are supported.

Currently, hostapd has more complete configuration option for WPS
parameters and wpa_supplicant configuration style will likely change in
the future. External Registrars are not yet supported in hostapd or
wpa_supplicant. While wpa_supplicant has initial support for acting as
an Registrar to configure an AP, this is still using number of hardcoded
parameters which will need to be made configurable for proper operation.
2008-11-23 19:34:26 +02:00
Jouni Malinen
04a5bad682 EAP-AKA: Validate RES Length field in AT_RES
This change breaks interoperability with older wpa_supplicant versions
(everything up to and including wpa_supplicant 0.5.10 and 0.6.5) which
incorrectly used this field as number of bytes, not bits, in RES.
2008-11-07 08:34:07 +02:00
Jouni Malinen
fa2ec7eb63 Silenced compiler warnings on size_t printf format and shadowed variables 2008-09-27 10:46:06 +03:00
Jouni Malinen
a9141cffb0 Updated EAP-TTLSv0 references to use RFC 5281 2008-08-16 10:17:22 +03:00
Jouni Malinen
2eeaa5c9d0 EAP-PEAP: Moved the common peap_prfplus() function into a shared file 2008-06-09 10:32:12 +03:00
Jouni Malinen
1c2ff04f3a TNC: Added preliminary code for IF-TNCCS-SOH server side support
If TNC is enabled, PEAPv0 server is now sending out SoH request to initiate
IF-TNCCS-SOH (Microsoft NAP / Statement of Health) handshake. The results
are currently only shown in debug log and they do not affect authentication
or authorization result.
2008-03-30 17:10:44 +03:00
Jouni Malinen
2bab8ae401 EAP-FAST: Define and use EAP_FAST_CMK_LEN 2008-02-27 17:58:46 -08:00