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components/wpa_supplicant/src/eap_peer/eap_fast_common.h
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/*
* EAP-FAST definitions (RFC 4851)
* Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef EAP_FAST_H
#define EAP_FAST_H
#define EAP_FAST_VERSION 1
#define EAP_FAST_KEY_LEN 64
#define EAP_FAST_SIMCK_LEN 40
#define EAP_FAST_SKS_LEN 40
#define EAP_FAST_CMK_LEN 20
#define TLS_EXT_PAC_OPAQUE 35
/*
* RFC 5422: Section 4.2.1 - Formats for PAC TLV Attributes / Type Field
* Note: bit 0x8000 (Mandatory) and bit 0x4000 (Reserved) are also defined
* in the general PAC TLV format (Section 4.2).
*/
#define PAC_TYPE_PAC_KEY 1
#define PAC_TYPE_PAC_OPAQUE 2
#define PAC_TYPE_CRED_LIFETIME 3
#define PAC_TYPE_A_ID 4
#define PAC_TYPE_I_ID 5
/*
* 6 was previous assigned for SERVER_PROTECTED_DATA, but
* draft-cam-winget-eap-fast-provisioning-02.txt changed this to Reserved.
*/
#define PAC_TYPE_A_ID_INFO 7
#define PAC_TYPE_PAC_ACKNOWLEDGEMENT 8
#define PAC_TYPE_PAC_INFO 9
#define PAC_TYPE_PAC_TYPE 10
#ifdef _MSC_VER
#pragma pack(push, 1)
#endif /* _MSC_VER */
struct pac_tlv_hdr {
be16 type;
be16 len;
} STRUCT_PACKED;
#ifdef _MSC_VER
#pragma pack(pop)
#endif /* _MSC_VER */
#define EAP_FAST_PAC_KEY_LEN 32
/* RFC 5422: 4.2.6 PAC-Type TLV */
#define PAC_TYPE_TUNNEL_PAC 1
/* Application Specific Short Lived PACs (only in volatile storage) */
/* User Authorization PAC */
#define PAC_TYPE_USER_AUTHORIZATION 3
/* Application Specific Long Lived PACs */
/* Machine Authentication PAC */
#define PAC_TYPE_MACHINE_AUTHENTICATION 2
/*
* RFC 5422:
* Section 3.3 - Key Derivations Used in the EAP-FAST Provisioning Exchange
*/
struct eap_fast_key_block_provisioning {
/* Extra key material after TLS key_block */
u8 session_key_seed[EAP_FAST_SKS_LEN];
u8 server_challenge[16]; /* MSCHAPv2 ServerChallenge */
u8 client_challenge[16]; /* MSCHAPv2 ClientChallenge */
};
struct wpabuf;
struct tls_connection;
struct eap_fast_tlv_parse {
u8 *eap_payload_tlv;
size_t eap_payload_tlv_len;
struct eap_tlv_crypto_binding_tlv *crypto_binding;
size_t crypto_binding_len;
int iresult;
int result;
int request_action;
u8 *pac;
size_t pac_len;
};
void eap_fast_put_tlv_hdr(struct wpabuf *buf, u16 type, u16 len);
void eap_fast_put_tlv(struct wpabuf *buf, u16 type, const void *data,
u16 len);
void eap_fast_put_tlv_buf(struct wpabuf *buf, u16 type,
const struct wpabuf *data);
struct wpabuf * eap_fast_tlv_eap_payload(struct wpabuf *buf);
void eap_fast_derive_master_secret(const u8 *pac_key, const u8 *server_random,
const u8 *client_random, u8 *master_secret);
u8 * eap_fast_derive_key(void *ssl_ctx, struct tls_connection *conn,
size_t len);
int eap_fast_derive_eap_msk(const u8 *simck, u8 *msk);
int eap_fast_derive_eap_emsk(const u8 *simck, u8 *emsk);
int eap_fast_parse_tlv(struct eap_fast_tlv_parse *tlv,
int tlv_type, u8 *pos, size_t len);
#endif /* EAP_FAST_H */
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