Commit graph

107 commits

Author SHA1 Message Date
Jouni Malinen
ac5953db66 Fixed EAP-AKA build in case EAP-AKA' is disabled 2008-12-16 18:57:49 +02:00
Jouni Malinen
000a1de72b Cleaned up EAP-MSCHAPv2 key derivation
Changed peer to derive the full key (both MS-MPPE-Recv-Key and
MS-MPPE-Send-Key for total of 32 octets) to match with server
implementation.

Swapped the order of MPPE keys in MSK derivation since server
MS-MPPE-Recv-Key | MS-MPPE-Send-Key matches with the order specified for
EAP-TLS MSK derivation. This means that PEAPv0 cryptobinding is now
using EAP-MSCHAPv2 MSK as-is for ISK while EAP-FAST will need to swap
the order of the MPPE keys to get ISK in a way that interoperates with
Cisco EAP-FAST implementation.
2008-12-14 13:12:20 +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
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
a49c428a1b EAP-AKA': Comment out EAP-AKA' server KDF negotiation
Since only one KDF is currently supported, the negotiation is not
allowed and peer must be rejected if it tries to send KDF selection in a
Challenge message. The negotiation code is left in the file and just
commented out since it was tested to work and can be used in the future
if another KDF is added.
2008-12-04 20:32:56 +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
73d48dc4b4 EAP-AKA': Allow both AKA AKA' to be registed from eap_aka_prime.c
This allows the same source code file to be shared for both methods. For
now, this is only in eap_aka_prime.c, but eventually, changes in
eap_aka_prime.c are likely to be merged into eap_aka.c at which point
the separate eap_aka_prime.c can be removed.
2008-12-03 19:59:52 +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
f09d19d46a Use a variable to store EAP method type for EAP-AKA vs. EAP-AKA'
This makes it easier to eventually replace EAP-AKA implementation with a
shared implementation that supports both EAP-AKA and EAP-AKA'.
2008-12-02 20:27:05 +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
eb76b7e3ff WPS: Parse Request Type from WPS IE in (Re)AssocReq and derive mgmt keys
WPS IE is now passed from hostapd association processing into EAP-WSC
and WPS processing. Request Type attribute is parsed from this
information and if the request is for a WLAN Manager Registrar,
additional management keys are derived (to be used with UPnP).
2008-11-29 12:11:56 +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
012783f1ab Fixed EAP-TLS message fragmentation for the last TLS message
It the message was large enough to require fragmentation (e.g., if a large
Session Ticket data is included), More Fragment flag was set, but no
more fragments were actually sent (i.e., Access-Accept was sent out).
2008-11-20 19:39:35 +02:00
Jouni Malinen
6cd4f02b03 Fixed EAPA-AKA warning message about AT_RES length to use bits 2008-11-20 15:23:51 +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
36100718de EAP-FAST server: allow expired PAC for PAC refresh
Instead of falling back to full TLS handshake on expired PAC, allow the
PAC to be used to allow a PAC update with some level of server
authentication (i.e., do not fall back to full TLS handshake since we
cannot be sure that the peer would be able to validate server certificate
now). However, reject the authentication since the PAC was not valid
anymore. Peer can connect again with the newly provisioned PAC after this.
2008-11-06 22:57:09 +02:00
Jouni Malinen
dd20838a7d Fixed size_t printf format for 64-bit targets 2008-10-29 19:30:23 +02:00
Jouni Malinen
2d86724409 EAP-FAST: Allow A-ID and A-ID-Info to be configured separately
Changed EAP-FAST configuration to use separate fields for A-ID and
A-ID-Info (eap_fast_a_id_info) to allow A-ID to be set to a fixed
16-octet len binary value for better interoperability with some peer
implementations; eap_fast_a_id is now configured as a hex string.
2008-10-19 09:55:59 +03:00
Jouni Malinen
a11c90a64a EAP-FAST: Make PAC-Key lifetime values configurable
The hardcoded values in eap_fast.c were replaced with values read from
hostapd.conf.
2008-10-08 17:25:47 +03:00
Jouni Malinen
378eae5e9b EAP-FAST: Added support for disabling anonymous/authenticated provisioning
eap_fast_prov config parameter can now be used to enable/disable different
EAP-FAST provisioning modes:
0 = provisioning disabled
1 = only anonymous provisioning allowed
2 = only authenticated provisioning allowed
3 = both provisioning modes allowed
2008-10-08 16:55:23 +03:00
Jouni Malinen
f36f51e403 Change the order of Result TLV and PAC TLV to avoid interop issues
draft-cam-winget-eap-fast-provisioning-06.txt or RFC 4851 do not seem to
mandate any particular order for TLVs, but some interop issues were noticed
with an EAP-FAST peer implementation when Result TLV followed PAC TLV. The
example in draft-cam-winget-eap-fast-provisioning-06.txt shows the TLVs in
the other order, so change the order here, too, to make it less likely to
hit this type of interop issues.
2008-10-08 15:50:01 +03:00
Jouni Malinen
510c02d4a3 Fixed EAP-TTLS server to verify eap_ttls_phase2_eap_init() return code
It is possible that the initialization of the Phase 2 EAP method fails and
if that happens, we need to stop EAP-TTLS server from trying to continue
using the uninitialized EAP method. Otherwise, the server could trigger
a segmentation fault when dereferencing a NULL pointer.
2008-10-01 13:55:04 +03:00
Jouni Malinen
1f21bc4cc3 Fixed EAP-FAST server PAC-Opaque padding
0.6.4 broke this for some peer identity lengths. The padding was supposed
to make sure that the length of PAC-Opaque is divisible by 8.
2008-08-24 12:50:12 +03:00
Jouni Malinen
a9141cffb0 Updated EAP-TTLSv0 references to use RFC 5281 2008-08-16 10:17:22 +03:00
Jouni Malinen
6652b61cd4 Fixed EAP-TNC not to include extra EAP header and TNC flags
The change to support fragmentation added extra function to generate the
EAP header, but forgot to remove the original code and ended up getting two
EAP headers and TNC flags field in the generated message. These header
fields need to be added only in the function that builds the final message
(and if necessary, fragments the data).
2008-07-17 02:17:37 +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
7cdeb81e1f Fixed potential NULL pointer dereference if memory allocation fails 2008-06-05 20:44:30 +03:00
Jouni Malinen
bf206cada3 Changed TLS server to use OpenSSL SSL_accept() instead of SSL_read()
The server handshake processing was still using SSL_read() to get OpenSSL
to perform the handshake. While this works for most cases, it caused some
issues for re-authentication. This is now changed to use SSL_accept() which
is more approriate here since we know that the handshake is still going on
and there will not be any tunneled data available. This resolves some of
the re-authentication issues and makes it possible for the server to notice
if TLS processing fails (SSL_read() did not return an error in many of
these cases while SSL_accept() does).

Set session id context to a unique value in order to avoid fatal errors
when client tries session resumption (SSL_set_session_id_context() must be
called for that to work), but disable session resumption with the unique
value for the time being since not all server side code is ready for it yet
(e.g., EAP-TTLS needs special Phase 2 processing when using abbreviated
handshake).

Changed EAP-TLS server not to call TLS library when processing the final
ACK (empty data) from the client in order to avoid starting a new TLS
handshake with SSL_accept().
2008-05-29 20:36:18 +03:00
Jouni Malinen
3c99fa29d3 Add eap_tls_state() to get closer to EAP-TTLS/PEAP/FAST code 2008-05-28 17:19:57 +03:00
Jouni Malinen
cda97d11bb Share EAP-TLS/PEAP/TTLS/FAST core process() functionality
Move the basic processing of received frames into eap_tls_common.c and use
callback functions to handle EAP type specific processing of the version
field and payload.
2008-05-28 17:15:17 +03:00
Jouni Malinen
3c724cc564 Do not refer to Flags::Version field as 'PEAP version'
This field is also used for EAP-TTLS and EAP-FAST, so it is clearer to use
a more generic term for it.
2008-05-28 09:59:55 +03:00
Jouni Malinen
34f564dbd5 Redesigned EAP-TLS/PEAP/TTLS/FAST fragmentation/reassembly
Fragmentation is now done as a separate step to clean up the design and to
allow the same code to be used in both Phase 1 and Phase 2. This adds
support for fragmenting EAP-PEAP/TTLS/FAST Phase 2 (tunneled) data.
2008-05-28 09:57:17 +03:00
Jouni Malinen
ab17e3f2b7 Fixed EAP-IKEv2 server fragment processing
Need to clear the state back to MSG after having processed all incoming
fragments. Without this, the server got stuck in sending the fragment ACK
even after having received the full message.
2008-05-26 16:51:40 +03:00
Jouni Malinen
ef626b4d50 Added a workaround for handling TLS compression
Even though we try to disable TLS compression, it is possible that this
cannot be done with all TLS libraries. For example, OpenSSL 0.9.8 does not
seem to have a configuration item for disabling all compression (0.9.9 has
such an option). If compression is used, Phase 2 decryption may end up
producing more data than the input buffer due to compressed data. This
shows up especially with EAP-TNC that uses very compressible data format.

As a workaround, increase the decryption buffer length to (orig_len+500)*3.
This is a hack, but at least it handles most cases. TLS compression should
really be disabled for EAP use of TLS, but since this can show up with
common setups, it is better to handle this case.
2008-05-26 12:33:04 +03:00
Jouni Malinen
1b52ea47e4 Added fragmentation support for EAP-TNC 2008-05-26 12:00:18 +03:00
Jouni Malinen
579313ab07 Fixed xsi:schemaLocation to use whitespace to separate members of the pair. 2008-05-06 21:29:14 +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
e7d8003358 EAP-PEAP: Fixed interop issues in key derivation with cryptobinding
It looks like Microsoft implementation does not match with their
specification as far as PRF+ label usage is concerned.. IPMK|CMK is derived
without null termination on the label, but the label for CSK derivation
must be null terminated.

This allows cryptobinding to be used with PEAPv0 in a way that
interoperates with Windows XP SP3 (RC2) and as such, this functionality is
now enabled as an optional addition to PEAPv0.
2008-03-19 16:58:06 +02:00
Jouni Malinen
32f049b2af EAP-PEAP: Swap MS-CHAP-v2 MPPE keys for EAP-PEAP ISK derivation
Microsoft uses reverse order for MS-MPPE keys in EAP-PEAP when compared to
EAP-FAST derivation of ISK. Swap the keys here to get the correct ISK for
EAP-PEAPv0 cryptobinding. This resolves the cryptobinding interop issue
with WinXP SP3 RC2. However, it looks like MSK derivation does not
interoperate when using cryptobinding, so this code remains disabled for
the time being.
2008-03-18 16:27:55 +02:00
Jouni Malinen
e1a69a0b10 EAP-PEAP: Added preliminary code for PEAPv0 and PEAPv2 cryptobinding
This implementation is complete for PEAPv0 (Microsoft extension), but the
use of cryptobinding is disabled in this version, i.e., this does not
change protocol behavior at all.

Interop tests between hostapd and wpa_supplicant work fine, but there are
some problems in getting hostapd to interoperate with Windows XP SP3 RC2
(peer replies with Result Failure to the attempted cryptobinding). The
implementation will remain disabled until this issue has been resolved.
2008-03-18 12:19:52 +02:00
Jouni Malinen
06726f0bdd EAP-PEAP: Moved EAP-TLV processing into eap_peap.c
EAP-PEAP was the only method that used the external eap_tlv.c server
implementation. This worked fine just for the simple protected result
notification, but extending the TLV support for cryptobinding etc. is not
trivial with such separation. With the TLV processing integrated into
eap_peap.c, all the needed information is now available for using
additional TLVs.
2008-03-18 08:31:04 +02:00
Jouni Malinen
c80a74d70c TNC: Integrated TNC support into EAP-TTLS server
If TNC is enabled, EAP-TTLS will run a second EAP (TNC) inside the tunnel
after a successful authentication.
2008-03-09 12:05:06 +02:00
Jouni Malinen
7db0fca522 TNC: Integrated TNC support into EAP-FAST server
Tunneled EAP sequence is now used to perform both the authentication (e.g.,
using EAP-GTC) and TNC validation (EAP-TNC) inside the EAP-FAST tunnel if
TNC has been enabled.
2008-03-09 11:22:17 +02:00
Jouni Malinen
c3e258ae9f TNC: Provide 'tnc' configuration option for EAP server and methods 2008-03-09 10:42:53 +02:00
Jouni Malinen
da08a7c732 TNC: Added preliminary TNC implementation for hostapd
This adds EAP-TNC method and TNCS (IF-IMV and IF-TNCCS) functionality.
There is no integration with EAP-TTLS and EAP-FAST at this point, so this
version is not yet suitable for real use (i.e., EAP-TNC can only be tested
outside a tunnel which is not an allowed configuration for deployment).
However, the basic TNCS functionality is more or less complete and this
version seems to interoperate with wpa_supplicant.
2008-03-09 10:37:18 +02:00
Jouni Malinen
13b3f33942 EAP-FAST: Verify that identity from PAC-Opaque matches with Phase 2 (GTC) 2008-02-27 18:00:12 -08:00
Jouni Malinen
7914585fe0 EAP-FAST: Cleaned up TLV processing and added support for EAP Sequences
Number of TLVs were processed in groups and these cases were now separated
into more flexible processing of one TLV at the time. wpabuf_concat()
function was added to make it easier to concatenate TLVs. EAP Sequences are
now supported in both server and peer code, but the server side is not
enabled by default.
2008-02-27 17:59:34 -08:00
Jouni Malinen
2bab8ae401 EAP-FAST: Define and use EAP_FAST_CMK_LEN 2008-02-27 17:58:46 -08:00
Jouni Malinen
ed5a02fd94 Removed extra '_' from struct eap_tlv_crypto_binding__tlv name 2008-02-27 17:58:13 -08:00
Jouni Malinen
cdd1bc9288 EAP-FAST: Divided eap_fast_process() into number of helper functions 2008-02-27 17:57:49 -08:00
Jouni Malinen
7f4c1d4300 EAP-FAST: Moved common peer/server functionality into a shared file 2008-02-27 17:57:19 -08:00
Jouni Malinen
a4819630f6 EAP-FAST: Added shared helper functions for building TLVs 2008-02-27 17:56:30 -08:00
Jouni Malinen
829f14be17 EAP-FAST: Add peer identity into EAP-FAST PAC-Opaque
This allows Phase 2 Identity Request to be skipped if the identity is
already known from PAC-Opaque received in TLS handshake in order to save
one roundtrip from normal authentication.
2008-02-27 17:55:40 -08:00
Jouni Malinen
6fc6879bd5 Re-initialize hostapd/wpa_supplicant git repository based on 0.6.3 release 2008-02-27 17:34:43 -08:00